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Instrumentation and computing
In order to facilitate the deployment of modern data science technologies (e.g., Deep Learning) into theoretical and experimental research in high energy physics, we suggest that the creation of a European Data Science Institute for Fundamental Physics is included among the recommendations of the European Strategy group. Such an institute would facilitate the development of...
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Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
Since the last update of the European strategy on particle physics (ESPP) the
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interest in hypothetical very weakly interacting slim particles, dubbed WISPs,
has gained significant momentum. Searches for WISPs with masses below
about 1 eV require new approaches beyond accelerator experiments. This document
summarizes the physics case, the experimental status and its prospects
for the... -
Neutrino physics (accelerator and non-accelerator)
The current generation of short baseline neutrino experiments is
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approaching intrinsic source limitations in the knowledge of flux,
initial neutrino energy and flavor. A dedicated facility based on
conventional accelerator techniques and existing infrastructures
designed to overcome these impediments would have a remarkable impact
on the entire field of neutrino oscillation physics. It would... -
Neutrino physics (accelerator and non-accelerator)
The Global Neutrino Network is an association of the neutrino telescope projects targeting the investigation of cosmic and atmospheric neutrinos in the energy range from GeV to beyond PeV. The main scientific objectives are the exploration of high-energy cosmic neutrinos from non-thermal astrophysical sources (neutrino astronomy), the investigation of fundamental questions of particle physics...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
This document summarises the physics interest, sensitivity reach and competitiveness of a future general-purpose fixed-target facility for Particle Physics research. Based upon the versatile M2 beam line of the CERN SPS, a great variety of measurements is proposed to address fundamental issues of Quantum Chromodynamics.
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
The present document discusses plans for a compact, next-generation multi-purpose detector at the LHC as a follow-up to the present ALICE experiment. The aim is to build a nearly massless barrel detector consisting of truly cylindrical layers based on curved wafer-scale ultra-thin silicon sensors with MAPS technology, featuring an unprecedented low material budget of 0.05$\%$ X$_0$ per layer,...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
Worldwide, the particle physics and accelerator community is very actively working towards the next major facility. We emphasize the need to evaluate and compare progress on linear and circular e+e- collider designs in the 100 to 360 GeV centre-of-mass energy and their respective performance potential for making the optimal choice.
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Accelerator Science and Technology
Advanced and Novel Accelerators (ANAs) can provide acceleration gradients orders of magnitude greater than conventional accelerator technologies, and hence they have the potential to provide a new generation of more compact, high-energy machines. Four technologies are of particular interest, all of which rely on the generation of a wakefield which contains intense electric fields suitable for...
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Accelerator Science and Technology
Abstract
Superconductivity is a core technology that has fueled the progress in high-energy physics (HEP) accelerators, from the Tevatron of the early 1980’s to the Large Hadron Collider of the late 2010’s [1,2,3,4]. The engineering knowledge of superconducting materials in the form of composite wires, tapes, or thin layers finds application in high-field accelerator magnets [5], very large...
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Neutrino physics (accelerator and non-accelerator)
APPEC strongly supports and encourages the prospects of an even stronger synergy between Astroparticle Physics and Cosmology with Particle Physics. Areas of synergy between the above domains are identified: dark matter and dark energy; multi-messenger astrophysics, with the recently achieved discoveries of gravitational waves and the extraordinary opportunities also offered by gamma-ray and...
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National road maps
This white paper describes the community strategic planning process organized by APS DPF, and summarizes U.S. particle physics community input on activities and aspirations. This is the first of two documents, covering the five P5 Science Drivers.
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National road maps
The U.S. particle physics strategy process is summarized in a companion white paper that also describes U.S. activities related to the five P5 science drivers. Additional activities within the U.S. particle physics program that are critical to progress in our field are described here.
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Accelerator Science and Technology
The AWAKE experiment reached all planned milestones during Run 1 (2016-18), notably the demonstration of strong plasma wakes generated by proton beams and the acceleration of externally injected electrons to multi-GeV energy levels in the proton driven plasma wakefields. During Run 2 (2021 - 2024) AWAKE aims to demonstrate the scalability and the acceleration of electrons to high energies...
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Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
Proton-driven plasma wakefield acceleration allows the transfer of energy from a proton bunch to a trailing bunch of particles, the ‘witness’ particles, via plasma electrons. The AWAKE experiment at CERN is pursuing a demonstration of this scheme using bunches of protons from the CERN SPS. Assuming continued success of the AWAKE program, high energy electron or muon beams will become...
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National road maps
This document summarizes the input of the Belgian scientists to the European Strategy Group (ESG) in the context of the upcoming European strategy update for particle physics research. The Belgian HEP community (permanent researchers from particle and astroparticle physics) met in Brussels on September 12th, 2018. During this meeting we took stock of our current activities, evaluated our...
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National road maps
This document is sent on behalf of the academic faculty members of the Birmingham Particle Physics Group. We begin by summarising our view of the most significant physics questions driving our field and go on to argue how we think they can best be addressed through new facilities, before ending with a few comments on maintaining our community and its wider impact.
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National road maps
This document provides input from the Canadian subatomic physics community to the European Particle Physics Strategy 2020-2025 and is based on the 2017-21 Canadian Subatomic Physics Long Range Plan (www.subatomicphysics.ca). This submission provides an overview of the major projects in which the Canadian community is participating, and discusses connections to the European Particle Physics...
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National road maps
This document summarizes the scientific and technological position of CEA-Irfu teams on the main projects for particle physics, including neutrino physics and QGP physics.
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The achievement of the HL-LHC and its scientific exploitation is the immediate priority. The crucial question is therefore the definition of the next generation of collider able to pursue an ambitious search for new physics. -
Large experiments and projects
The Higgs boson, discovered in 2012 by the ATLAS and CMS Collaborations at the Large Hadron Collider (LHC), plays a central role in the Standard Model. Measuring its properties precisely will advance our understandings of some of the most important questions in particle physics, such as the naturalness of the electroweak scale and the nature of the electroweak phase transition. The Higgs boson...
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Large experiments and projects
Executive summary
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The discovery of the Higgs boson at CERN’s Large Hadron Collider (LHC) in July
2012 raised new opportunities for a large-scale accelerator. Due to the low mass of the
Higgs, it is possible to produce it in the relatively clean environment of a circular electron–positron collider with reasonable luminosity, technology, cost and power consumption. The Higgs boson is a... -
Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
Please refer to the document attached.
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
Charged-lepton flavour-violating (cLFV) processes offer deep probes for new physics with discovery sensitivity to a broad array of new physics models — SUSY, Higgs Doublets, Extra Dimensions, and, particularly, models explaining the neutrino mass hierarchy and the matter-antimatter asymmetry of the universe via leptogenesis. The most sensitive probes of cLFV utilize high-intensity muon beams...
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
The search for charged lepton flavour violation (CLFV) has an enormous discovery potential in probing new physics Beyond the Standard Model (BSM). The observation of a CLFV transition would be an undeniable sign of the presence of BSM physics which goes beyond non-zero masses for neutrinos. Furthermore, CLFV measurements can provide a way to distinguish between different BSM models, which may...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
Public and political support for particle physics is essential for sustaining the long-term future of the field - whether this is for attracting young people into STEM careers, gaining support from local communities for building new experiments, or for securing government funding for new and existing experiments. The importance of communicating particle physics has long been recognised by the...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
This contribution aims at promoting the ground-breaking physics programme accessible with the multi-TeV LHC proton and ion beams used in the fixed-target mode. It can be realised in a parasitic mode for the LHC complex using existing detectors like those of the LHCb and ALICE collaborations or new dedicated systems during the LHC lifetime. It contains a brief description of the different...
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Large experiments and projects
The wide energy range covered by the complex NEVOD is determined by a unique combination of detectors and installations that have no analogues in the world. The energy region from few GeV to ~ 100 GeV is covered by muon hodoscope URAGAN with an area of 46 m^2. The region from several tens of GeV to several tens of TeV is covered by the Cherenkov water calorimeter with a volume of 2000 m^3 with...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
This text summaries the consensus view of the scientific community on priorities in the field of relativistic heavy ion collisions, as expressed by the 421 registered participants of the Town Meeting held on 24 October 2018 at CERN.
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National road maps
The French physics society and its division Champs et Particules, after a large consultation of its members, has reached a consensus, and proposes a list of hierarchized items for the European strategy for particle physics. It is motivated by the search of new physics and our belief that Europe must continue playing the leading role in this domain.
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Accelerator Science and Technology
This input is a summary of an Expression of Interest (SPSC-EOI-018) submitted to the CERN Scientific Committee for the SPS accelerator, SPSC.
A primary electron beam facility is proposed with the main motivations being (i) dark sector experiments, and (ii) to enable a suite of development projects in acceleration technology. The facility would deliver a beam to a Light Dark Matter eXperiment,...
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Neutrino physics (accelerator and non-accelerator)
The 2013 European Strategy for Particle Physics (ESPP) identified the long-baseline neutrino programme as one of the four scientific objectives that require international collaboration. This strong recommendation led to the formation of DUNE as an international collaboration in 2015. The DUNE Collaboration now includes CERN and 14 of its member states, with approximately 400 European...
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Instrumentation and computing
RD51 is a well-established collaboration with the aim to develop Micro-Pattern Gaseous Detector (MPGD) technologies, to support experiments using this technology, and to disseminate the technology within particle physics and in other fields. Originally created for a five-year term in 2008, RD51 was extended for a third five years term beyond 2018. The rich portfolio of MPGD projects, under...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
This document has been prepared as an input for the discussions on an
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European Strategy for Particles Physics. -
Instrumentation and computing
The ECFA Detector Panel is a European Committee composed of detector physicists from a variety of experimental communities in particle and astro-particle physics. Its primary role is to review early stage detector R&D for programmes in these areas that are not yet linked to a host or leading laboratory with its own established review mechanisms. The role and composition of the panel make it...
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
We describe the status and prospect of the European community of electric dipole moment searches for the input to the update of the European strategy for particle physics.
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Accelerator Science and Technology
A U.S.-based Electron-Ion Collider (EIC) has recently been endorsed by the U.S. National Academies of Sciences, Engineering, and Medicine (NAS). This brings the realization of such a collider another step closer, after its earlier recommendation in the 2015 Long-Range Plan for U.S. nuclear science of the Nuclear Science Advisory Committee "as the highest priority for new facility construction...
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Beyond the Standard Model at colliders (present and future)
First of all, an importance of the LHC/FCC based energy frontier lepton-hadron and photon-hadron colliders is emphasised. Then arguments favoring existence of new heavy isosinglet down-type quarks and vector-like isosinglet or isodoublet leptons are presented, following by historical arguments favoring new (preonic) level of matter. The importance of Super-Charm factory and GeV energy proton...
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Neutrino physics (accelerator and non-accelerator)
The Long-Baseline Neutrino Facility (LBNF) offers a unique opportunity for neutrino physics due to the high intensity (anti)neutrino beam with a broad energy spectrum. The possibility to collect unprecedented exposures alleviates one of the primary limitations of past neutrino experiments. An experimental technique has been recently proposed to achieve a control of the configuration, chemical...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
As the European particle physics community engages in an updated strategy for the coming years, we present three recommendations that will ensure a more sustainable future for the field of particle physics in view of climate change. The text and recommendations are signed by 314 particle physicists, representing a diverse set of the community.
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Large experiments and projects
The user’s community of ISOLDE, CERN’s radioactive ion beam (RIB) facility, has been steadily growing in the last 10-15 years, thanks to the increasing range of research fields that opened up when post-accelerated radioactive beams and more isotopes became available. The demand for beam time therefore outnumbers the current production capabilities. The EPIC project takes full advantage of the...
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National road maps
This document supplements the main scientific input from the UK particle physics community, and sets out the position of the UK national laboratories on points of European collaboration and organisation.
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
The Large Hadron Collider determines the energy frontier of experimental collider physics for the next two decades. Following the current luminosity upgrade, the LHC can be further upgraded with a high energy, intense electron beam such that it becomes a twin-collider facility, in which ep operates concurrently with pp. A joint ECFA, CERN and NuPECC initiative led to a detailed conceptual...
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Beyond the Standard Model at colliders (present and future)
FASER, the ForwArd Search ExpeRiment, is a proposed experiment dedicated to searching for light, extremely weakly-interacting particles at the LHC. Such particles may be produced in the LHC's high-energy collisions in large numbers in the far-forward region and then travel long distances through concrete and rock without interacting. They may then decay to visible particles in FASER, which...
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Accelerator Science and Technology
This project exploits charged particles confined as a storage ring beam (proton, deuteron, possibly $^3$He) to search for an intrinsic electric dipole moment (EDM, $\vec d$) aligned along the particle spin axis. Statistical sensitivities can approach $10^{-29}$e$\cdot$cm. The challenge will be to reduce systematic errors to similar levels. The ring will be adjusted to preserve the spin...
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Electroweak physics (physics of the W, Z, H bosons, of the top quark, and QED)
Recent decades have witnessed remarkable confirmations of the Standard Model (SM) describing the Electro-Weak and Strong Interactions. The experimental discovery of the Higgs boson Ho at the CERN/LHC has crowned a success of the SM and calls for further studies on this newly observed sector. New and more precise activities are needed in order to extend more precisely this new discovery...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
This document is meant to serve as input from the IPPOG Collaboration for the open call for the European Particle Physics Strategy Update 2020. It emphasises the strategic relevance of concerted, global outreach activities in particle physics today and beyond when envisaging new large-scale projects.
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Large experiments and projects
This report describes a novel research infrastructure, based on a hadron collider with centre-of-mass collision energy of 100 TeV, collecting an integrated luminosity a factor of 5 or more larger than the HL-LHC. It will extend the current energy frontier by almost an order of magnitude. The mass reach for direct discovery will reach several tens of TeV, and allow, for example, to produce new...
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Large experiments and projects
This report contains the description of a novel research infrastructure based on a high-energy hadron collider, which extends the current energy frontier by almost a factor 2 (27 TeV collision energy) and an integrated luminosity of at least a factor of 3 larger than the HL-LHC. In connection with four experimental detectors, this infrastructure will deepen our understanding of the origin of...
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Large experiments and projects
The most effective and comprehensive approach to thoroughly explore the open questions in modern particle physics is a staged research programme, integrating in sequence lepton (FCC-ee) and hadron (FCC-hh) collision programmes, to achieve an exhaustive understanding of the Standard Model and of electroweak symmetry breaking, and to maximize the potential for the discovery of phenomena beyond...
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Large experiments and projects
This report contains the description of a novel research infrastructure based on a highest-luminosity energy frontier electron-positron collider (FCC-ee) to address the open questions of modern physics. It will be a general precision instrument for the continued in-depth exploration of nature at the smallest scales, optimised to study with high precision the Z, W, Higgs and top particles, with...
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Large experiments and projects
The completion of the Standard Model of particle physics by the discovery of a light Higgs boson at the LHC in 2012 triggered the debate about the best way forward to discover physics beyond the Standard Model. At the eve of the update of the European Strategy of particle physics, this article summarises the motivation and status of the different collider projects in particle physics at the...
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Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
We present the case for the DarkSide-Argo program for direct dark matter searches with low-radioactivity argon.
The immediate objective is the DarkSide-20k two-phase liquid argon detector, currently under construction at the Gran Sasso laboratory (LNGS). DarkSide-20k will have ultra-low backgrounds, with the ability to measure its backgrounds in situ, and sensitivity to WIMP-nucleon cross...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
the Germany ALICE community points out a future direction with a new nearly massless detector
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Neutrino physics (accelerator and non-accelerator)
This document summarizes the conclusions of the Neutrino Town Meeting held at CERN in October 2018 to review the neutrino field at large with the aim of defining a strategy for accelerator-based neutrino physics in Europe. The importance of the field across its many complementary components is stressed. Recommendations are presented regarding the accelerator based neutrino physics, pertinent...
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Electroweak physics (physics of the W, Z, H bosons, of the top quark, and QED)
The European Strategy for Particle Physics (ESSP) submitted in 2013 a deliberation document to the CERN council explaining that a lepton collider with "energies of 500 GeV or higher could explore the Higgs properties further, for example the [Yukawa] coupling to the top quark, the [trilinear] self-coupling and the total width.".
In view of the forthcoming ESPP update in 2020,...
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Accelerator Science and Technology
This contribution discusses the possibility of creating novel research tools at CERN by producing and storing highly relativistic atomic beams in its high-energy storage rings, and by exciting their atomic degrees of freedom by lasers to produce high-energy photon beams. Their intensity would be, by several orders of magnitude, higher than those of the presently operating light sources, in the...
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Neutrino physics (accelerator and non-accelerator)
The Giant Radio Array for Neutrino Detection (GRAND) is a planned large-scale observatory of ultra-high-energy (UHE) cosmic particles — cosmic rays, gamma rays, and neutrinos with energies exceeding $10^8$ GeV. Its ultimate goal is to solve the long-standing mystery of the origin of UHE cosmic rays. It will do so by detecting an unprecedented number of UHECRs and by looking with unmatched...
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Large experiments and projects
This document briefly describes some of the scientific and technological synergies that are possible between the nascent field of Gravitational Waves (GWs) and High Energy Particle Physics (HEPP). It is submitted by the ET steering committee under the supervision of GWIC-3G (a team of the Gravitational Wave International Committee (GWIC)) as contribution to the European Strategy for Particle...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
On November 20 and November 21 this working group has met in order to discuss and
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summarize future Hadron Physics Opportunities in Europe. The work of this working group is
based on the Long Range Plan of the Nuclear Physics European Collaboration Committee
from November 27, 2017 (NuPECC is an Expert Committee of the European Science
Foundation). Furthermore it is based on a series of four... -
Instrumentation and computing
One of the key requirements to be met by the future experimental installations
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like ALICE is to increase the accuracy of secondary vertices reconstruction in order to
meet the challenging task of high precision studies in relativistic heavy-ion collisions of
such rare processes like heavy-flavour production. This task requires the further reduction
of the existing values of material budget... -
Instrumentation and computing
High Energy Physics (HEP) has demonstrated a unique capability with the global computing infrastructure for LHC, achieving the management of data at the many-hundred-Petabyte scale, and providing access to the entire community in a manner that is largely transparent to the end user. Other HEP experiments have expressed a desire to benefit from this infrastructure and organization, and recent...
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
The Heavy Flavor Averaging Group provides with this document input to the European Strategy for Particle Physics. Research in heavy-flavor physics is an essential component of the particle-physics program, both within and beyond the Standard Model. To fully realize the potential of the field, we believe the strategy should include strong support for the ongoing experimental and theoretical...
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National road maps
The “Institut de Physique Nucléaire et de Physique des Particules” (IN2P3) comprises 25 laboratories located in major universities. IN2P3 is in charge of coordinating nuclear, particle and astro-particles physics in France. The number of people working at IN2P3 is 3200, about half of them PhDs. This represents 600 CNRS physicists, 400 professors from universities and 1500 engineers,...
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National road maps
High energy colliders offer the opportunity to widen our investigation of sub-nuclear phenomena to the highest unexplored energy regimes and shortest interaction scales. They consequently have the strongest potential for discovering new heavy particles and forces, allowing more accurate precision tests of Standard Model objects, and detecting new elusive signatures like the ones associated...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
INFN has a strong tradition in high-energy hadron physics, both in the heavy-ion sector and in the deep-inelastic-scattering sector, with important participation in international programmes, that also include relevant and specific contributions in terms of dedicated detectors. In this context, it is recognized that high centre-of-mass energy is a fundamental handle for the future...
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Instrumentation and computing
The INFN sees two major areas of application for high energy physics computing in the time scale relevant for the Strategy Update: the exploitation of high performance computing (HPC) and the use of Quantum Computing. The first one can be realized within few years, with high energy physics experiments becoming major users of HPC. Quantum computing is still at the level of research and...
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National road maps
This document contains some initial input from INFN to the update of the European Strategy for Particle Physics. It does not aim at providing a comprehensive overview of the INFN position on all the relevant aspects of the Strategy: this will be defined with the other actors all along the update process, from the Open Symposium of May 2019 to the Strategy Drafting Session of January 2020. It...
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National road maps
This document contains some initial input from the INFN Astroparticle Physics Commission 2 (CSN2) to the update of the European Strategy for Particle Physics.
It does not aim at providing a comprehensive overview of the CSN2 activities nor to cover all possible relevant aspects of the Strategy: this will be defined with the other actors all along the update process, from the Open Symposium...
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Neutrino physics (accelerator and non-accelerator)
Current research activities of Japan Proton Accelerator Research Complex (J-PARC) and the future prospects are summarized with emphasis on the particle physics experiments.
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Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
The DARWIN collaboration (www.darwin-observatory.org) is planning to build the “ultimate” underground-based direct detection dark matter detector, with a dark matter sensitivity limited only by irreducible neutrino backgrounds. The core of the detector will have a 40 ton liquid xenon target instrumented as a dual-phase time projection chamber. The large xenon target, the exquisitely low...
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National road maps
Input from the Netherlands for the European Strategy for Particle Physics – Update 2020
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National road maps
Input to the update of the European Strategy for Particle Physics provided by the Spanish Scientific Particle Physics community. It contains two files, the main document plus an addendum
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
Abstract
This document summarizes the discussions of representatives of laboratories of the Joint Institute for Nuclear Research (intergovernmental, international organization in Dubna) concerning the European Strategy for Particle Physics Update. The document reflects the forward view of JINR scientists to the development of PP in Europe based on long and successful history of CERN - JINR...
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National road maps
See attached file
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National road maps
This documents presents the interests and priorities of the Danish high energy and nuclear physics community based on the town meeting held by the National Center for CERN research (NICE) in June 2018 in Middelfart, DK.
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National road maps
Input to the Strategy Process from LNF-INFN
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National road maps
Although the Standard Model has been very successful in predicting and interpreting current measurements in particle physics, it has become clear that it cannot answer all the outstanding questions. To resolve the remaining issues new theories have been developed and further measurements are needed. The experience shows that diverse and complementary scientific program is the right approach to...
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National road maps
European Strategy for Particle Physics, Israeli Input
Steering committee
Z. Citron, Y. Kats (BGU), E. Kuflik (HU), L. Barak, T. Volansky (TAU), E. Kajomovitz, Y. Shadmi
(Technion), S. Bressler, G. Perez (WIS, coordinator)The enclosed document is based on a compilation of theoretical concepts and experimental methods solicited from the Israeli community by a steering committee with...
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National road maps
In September 2017, the Japanese high energy physics community, JAHEP (Japan Association of High Energy Physicists), updated the strategy for future particle physics by endorsing the Final Report of the Committee on Future Projects in High Energy Physics.
The Final Report summarizes Japan’s future strategy as follows:
In 2012, not only was a Higgs boson with a mass of 125 GeV discovered...
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
Precise measurements of the branching ratios for the flavor-changing neutral current decays $K\to\pi\nu\bar{\nu}$ can provide unique constraints on CKM unitarity and, potentially, evidence for new physics. It is important to measure both decay modes, $K^+\to\pi^+\nu\bar{\nu}$ and $K_L\to\pi^0\nu\bar{\nu}$, since different new physics models affect the rates for each channel differently. The...
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Neutrino physics (accelerator and non-accelerator)
We propose a multi-purpose neutrino observatory comprising two very large detectors solving different problems at the intersection of particle physics, astrophysics and Earth science. Baikal-GVD will work jointly with KM3NET and IceCube in the Global Neutrino Network, aiming at the detection and study of high-energy astrophysical neutrinos. The new Baksan neutrino telescope (NBNT) will inherit...
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National road maps
This note summarizes the activities and the scientific and technical perspectives of the Laboratoire de Physique Nucleaire et de Hautes Energies (LPNHE) at Sorbonne University, Paris. Although the ESPP is specifically aimed at particle physics, we discuss in this note in parallel the three scientific lines developed at LPNHE (Particle Physics, Astroparticles, Cosmology), first with the current...
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Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
MAGIS-1K: A 1000 m Atom Interferometer Device for Searches in Dark Matter and Gravity Waves
Jonathon Coleman, University of Liverpool, Merseyside, L69 7ZE, UK.
On behalf of the MAGIS-100 collaborationThis document is responding to the call for input collaboration to the update of the European Strategy for Particle Physics from the MAGIS collaboration.
Atom interferometry can be...
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Beyond the Standard Model at colliders (present and future)
The observation of long-lived particles at the LHC would reveal physics beyond the Standard Model could
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account for the many open issues in our understanding of our universe and conceivably point to a more
complete theory of the fundamental interactions. Such long-lived particle signatures are fundamentally
motivated and can appear in virtually every theoretical construct that addresses the... -
Electroweak physics (physics of the W, Z, H bosons, of the top quark, and QED)
Monte Carlo event generators (MCEGs) are the indispensable workhorses of particle physics, bridging the gap between theoretical ideas and first-principles calculations on the one hand, and the complex detector signatures and data of the experimental community on the other hand. All collider physics experiments are dependent on simulated events by MCEG codes such as Herwig, Pythia, Sherpa,...
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Large experiments and projects
Muon colliders have a great potential for high-energy physics. They can offer collisions of point-like par- ticles at very high energies, since muons can be accelerated in a ring without limitation from synchrotron radiation. However, the need for high luminosity faces technical challenges which arise from the short muon lifetime at rest and the difficulty of producing large numbers of muons...
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Neutrino physics (accelerator and non-accelerator)
The Protvino accelerator facility located in the Moscow region, Russia, is in a good position to enable a rich experimental research program in the field of neutrino physics. Of particular interest is the possibility to direct a neutrino beam from Protvino towards the KM3NeT/ORCA detector which is currently under construction in the Mediterranean sea 40 km offshore Toulon, France. Such an...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
This document summarizes proposed searches for new physics accessible in the heavy-ion mode at the LHC, both through hadronic and ultraperipheral $\gamma\gamma$ interactions, and that have a competitive or, even, unique discovery potential compared to standard proton-proton collision studies. Illustrative examples include searches of new particles --- such as axion-like pseudoscalars, radions,...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
Isaac Newton’s book ‘Opticks’ from the 18th century includes a number of hypotheses on the structure of matter. Most of the hypotheses were confirmed during the 19th and 20th centuries at the scales of nucleons, nuclei, atoms, molecules and macromolecules. Conflicts appear however at the scale of quarks and gluons according to the Standard Model of particle physics. The confirmations at the...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
This document provides input to the update of the European Strategy for Particle Physics in fields that are related to Nuclear Physics as described in the NuPECC Long Range Plan 2017.
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
NICA Application;
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NICA Addendum -
Neutrino physics (accelerator and non-accelerator)
The Neutrinos from Stored Muons, nuSTORM, facility has been designed to deliver a definitive neutrino-nucleus scattering programme using beams of (anti-)electron and (anti-)muon neutinos from the decay of muons confined within a storage ring. The facility is unique, it will be capable of storing muon beams with a central momentum of between 1 GeV/c and 6 GeV/c and a momentum spread of 16\%....
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Accelerator Science and Technology
Plasma accelerators generate accelerating fields that are up to 1,000 times higher than fundamentally possible in RF accelerators. They therefore offer a promising alternative path to the high-energy frontier. In 2012 the European Strategy Preparatory Group received for the first time detailed input about the prospects and promise of plasma accelerators, a 15 page report provided by the...
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Neutrino physics (accelerator and non-accelerator)
This document provides the inputs to the ongoing European Particle Physics Strategy based on the opportunities offered by the accelerator-based neutrino programme in Japan to which the 2013 European Strategy recommended due to the “Rapid progress in neutrino oscillation physics, with significant European involvement”, “CERN should develop a neutrino programme to pave the way for a substantial...
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Accelerator Science and Technology
We highlight the specific and unique opportunities that PSI offers for particle physics. The input outlines mid- and longterm projects and asks for support and cooperation of the international community. It exemplifies the benefits of the particle physics activities for other fields and also the return from developments elsewhere into the particle physics program. Sharing of facilities, e.g.,...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
The AWAKE experiment had a very successful Run 1 (2016-8), demonstrating proton-driven plasma wakefield acceleration for the first time, through the observation of the modulation of a long proton bunch into micro-bunches and the acceleration of electrons up to 2 GeV in 10 m of plasma. The aims of AWAKE Run 2 (2021-4) are to have high-charge bunches of electrons accelerated to high energy,...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
Abstract
The Standard Model provides estimations on neutron EDM (nEDM) value on the level inaccessible for the modern experiment: $10^{–30} – 10^{–33}$ е$\cdot$сm. CP-violation (and nEDM) arises only in the second order of smallness on the weak interaction constant. SМ fails to account for baryon asymmetry of Universe. Search for nEDM is expected to be search for some phenomena beyond the...
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National road maps
Abstract: In the report current plans and some ideas for future are reported for particle physics and related fields in Finland.
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Accelerator Science and Technology
This document summarises the main conclusions of the Conventional Beams Working group, which has analysed the beam related and technical requirements and requests in the proposals to the Physics Beyond Colliders study for the North Area at the CERN SPS. We present results from studies on feasibility, requirements, compatibility between proposals and, where possible, the order of magnitude of...
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Accelerator Science and Technology
This document contains results of the work of the PBC technology subgroup set up by the Physics Beyond Collider Working Group.
Goal of the technology subgroup set by PBC:
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Exploration and evaluation of possible technological
contributions of CERN to non-accelerator projects possibly
hosted elsewhere: survey of suitable experimental initiatives
and their connection to and potential... -
Accelerator Science and Technology
The efficient recovery of power, to re-excite cavities from the used beam, was proposed in 1965. Major advances in superconducting RF technology, as quantified by cavity quality factors Q0 in excess of 1010, and the consideration of multi-turn recirculator passages, have opened the door to the green generation of high energy, high brightness, high current electron beams. The facility PERLE,...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
A fixed-target programme in the ALICE experiment using the LHC proton and lead beams offers many physics opportunities related to the parton content of the nucleon and nucleus at high-x, the nucleon spin and the Quark-Gluon Plasma. We investigate two solutions that would allow ALICE to run in a fixed-target mode: the internal solid target coupled to a bent crystal and the internal gas target....
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National road maps
This is a position paper which aims at describing the current status and plans of Polish PP research community for the coming Update of ESPP 2020. The document does not discuss some subject closely related to PP in Poland like the Polish research in Astroparticle Physic and Nuclear Physics, and education, outreach and technology transfer issues.
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The worldwide activities of PP in the... -
Electroweak physics (physics of the W, Z, H bosons, of the top quark, and QED)
For the field of particle physics to benefit from the immense body of data from present and possible future colliders, it is essential to be able to accurately relate the experimental observations to the underlying Lagrangian. This is the case whether searching for physics beyond the Standard Model, exploring the many facets of the Higgs sector, or pinning down fundamental parameters such as...
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
This document describes research program of Budker INP (Novosibirsk) on high energy physics for the next two decades based on the flagship project of the electron-positron collider Super Charm-Tau (SCT) factory. The SCT factory is designed to operate in the center-of-mass energy range from 2 to 6 GeV with peak luminosity of 10**35 cm-2s−1 above 4 GeV. Longitudinal polarization of the electron...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
Based on the success of the currently running program and motivated by new physics needs the NA61/SHINE Collaboration proposes to continue the measurements of hadron and nuclear fragment production properties in reactions induced by
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hadron and ion beams after the CERN Long Shutdown 2 (LS2).
These measurements are requested by heavy ion, cosmic ray and neutrino communities and they include:... -
Accelerator Science and Technology
A large community of the French national funding agency IN2P3/CNRS has been in-
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volved since two decades in the developments addressing a linear electron-positron collider at the energy frontier, within an international collaboration involving nearly 100 laboratories around the world. This long term involvement has progressively generated a concrete project named International Linear Collider... -
Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
The CERN SPS offers a unique opportunity for exploring new physics due to the availability of high-quality and high-intensity secondary beams. In the 2016-18 runs, the NA64 experiment has successfully performed sensitive searches for Dark Sector and other rare processes in missing energy events using high energy electron interactions in an active dump. The NA64 Collaboration plans to...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
This contribution highlights the role of QCD theory in studying the physics of the Standard Model and beyond, as well as opportunities and challenges,
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as an input to the preparation of the European Particle Physics Strategy Update (EPPSU). -
Instrumentation and computing
High Energy Physics (HEP) is once again facing a “requirement wall” in all dimensions of Information and Communication Technology (ICT). Considering the current estimations of computing needs, the constrained budget that will be devoted to HEP computing, and the projected evolution of the actual capacity delivered by technology to HEP computing, a shortage of an order of magnitude in the next...
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
The REDTOP experiment is primarily intended to look for new violations of
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the basic symmetries. It aims to improve the sensitivity level of key physics conservation laws by several orders of magnitude beyond those of previous experiments. In doing so, it will open doorways for possible Physics Beyond the Standard Model including dark matter and energy, and/or new forces. The REDTOP... -
Neutrino physics (accelerator and non-accelerator)
With the discovery of non-zero value of $\theta_{13}$ mixing angle, the next generation of
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long-baseline neutrino (LBN) experiments offers the possibility of obtaining
statistically significant samples of muon and electron neutrinos and
anti-neutrinos with large oscillation effects.
In this document we intend to highlight the importance of Near Detector facilities in LBN experiments to both... -
National road maps
Norwegian particle physics, heavy-ion physics, nuclear physics, astroparticle physics, particle, astroparticle and cosmology theory present their research program for the next period of the European Strategy Update.
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National road maps
In the following, Austria’s particle physicists outline their current research program on particle physics and define their visions and plans. The overarching goal is to contribute to the understanding of known particle physics as well as the discovery of physics beyond the standard model and its theoretical understanding. This is achieved through Austria’s involvement in major international...
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National road maps
The document represents a synthesis of the input provided by research groups from Romanian National Institutes and Universities which are currently participating in the CERN Scientific Programme. The Romanian groups are focused on key areas of particle physics with large discovery potential, precision measurements and searches for new physics. Development of new detectors or performance...
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Neutrino physics (accelerator and non-accelerator)
These are some suggestions concerning ongoing and future tests that can be
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performed at CERN to search for possible sterile neutrinos and set
constraints on their masses and mixings. In addition to European
participation in neutrino oscillation experiments, in searches for
neutrinoless double beta decay, and in KATRIN, it is emphasized here that
sensitive searches for sterile... -
National road maps
This document reflects the view of the Slovenian HEP community on its engagement in current and future particle physics projects. It represents the input of a relatively small particle physics community to the European Strategy for Particle Physics.
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Accelerator Science and Technology
The proposed Beam Dump Facility (BDF) is foreseen to be located at the North Area of the SPS. It is designed to be able to serve both beam dump like and fixed target experiments. The SPS and the new facility would offer unique possibilities to enter a new era of exploration at the intensity frontier. Possible options include searches for very weakly interacting particles predicted by Hidden...
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National road maps
The German Committee for Astroparticle Physics, KAT, is the elected representation of all
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astroparticle physicists working at German research institutions of the Helmholtz Association, Max
Planck Society and at German universities. This paper comprises the statements of the German
astroparticle physics community to the 2020 update of the European Strategy for Particle Physics.
The three... -
National road maps
The German Committee for Particle Physics (KET), arranged, jointly with the German Committees for astroparticle physics (KAT) and for hadronic and nuclear physics (KHuK), a series of workshops to discuss status and future plans of particle physics and neighbouring fields. KET has extracted central statements and strategic proposals from the joint declaration and hereby submits them to the 2020...
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Neutrino physics (accelerator and non-accelerator)
There is large overlap in the research interests of the European particle physics community and the Pierre Auger Collaboration and there is a remarkable complementarity of the measurement principles and information accessible at accelerators and the Auger Observatory. With this statement, we provide input to the European Particle Physics Strategy Update 2018 - 2020. We strongly encourage very...
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Accelerator Science and Technology
Since the start of its operation in 2001, based on an idea of Prof. Carlo Rubbia[1], the neutron time-of-flight facility of CERN, n_TOF, has become one of the most forefront neutron facilities in the world for wide-energy spectrum neutron cross section measurements. Thanks to the combination of excellent neutron energy resolution and high instantaneous neutron flux available in the two...
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Neutrino physics (accelerator and non-accelerator)
Fermilab is the only laboratory in the world that operates two accelerator-based neutrino beams simultaneously. These intense neutrino sources enable an important collection of experi- ments that are studying neutrinos over both short and long distances, allowing the experiments to address questions such as the neutrino mass ordering, whether additional (sterile) neutrinos exist, and whether...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
The infrastructure and research related to Particle Physics plays an important role in creating a more sustainable society by actively pushing the frontiers of human understanding. Whilst positively contributing to the EU’s social and economic growth through innovation and Knowledge Transfer. In this short paper, STFC outlines its innovation strategy, in the context of Particle Physics, and...
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Instrumentation and computing
Instrumentation is a key ingredient for progress in experimental high energy physics. The Experimental Physics Department of CERN has defined a strategic R&D (Research and Development) programme on technologies for future experiments. Provided the required resources can be made available, it will start in 2020 and initially extend over five years. The selection of topics and the established...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
The exploration of the phase diagram of Quantum ChromoDynamics (QCD) is carried out by studying ultrarelativistic heavy-ion collisions. The energy range covered by the CERN SPS ($\sqrt{s_{\rm \scriptscriptstyle{NN}}} \sim 6\text{--}17$~GeV) is ideal for the investigation of the region of the phase diagram corresponding to finite baryochemical potential ($\mu_{\rm B}$), and has been little...
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National road maps
A national submission from the particle physics community (experiment and theory) in Sweden is given. The status and plans of the community are described and are used to inform a set of recommendations to the Strategy Update. In addition to recommendations of direct relevance to ongoing and planned Swedish research, the community’s views on proposed major facilities and the general direction...
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National road maps
The Particle Physics Group at the University of Liverpool has prepared this submission to the European Strategy Update. This was performed as a consultation process across the whole group including academics, research scientists, engineers, and research associates.
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National road maps
The position of the Swiss particle physics community towards the update for the European Strategy for Particle Physics compiled by the Swiss Institute for Particle Physics (CHIPP).
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
This document is submitted as input to the European Strategy for Particle Physics Update (ESPPU). The U.S.-based Electron-Ion Collider (EIC) project recently received strong endorsement by the U.S. National Academies of Sciences, Engineering, and Medicine, bringing its realization another step closer. A large group of European scientists is already involved in the EIC project. Currently, more...
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Accelerator Science and Technology
Accelerator Science and Technology
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
TauFV is a fixed-target experiment designed to search for Lepton Flavour Violation in tau decays, utilising a high energy, high intensity proton beam impinging on a distributed system of targets. In the baseline proposal, TauFV will be situated on the high-intensity beam line the Beam-Dump Facility of the SPS, upstream of the SHiP experiment. Its performance will rely on advanced detector...
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
The diverse community of scientists involved in Deep Inelastic Scattering includes about 2000 experi- mental and theoretical physicists worldwide and envisages projects such as the EIC, LHeC, FCC-eh and VHEeP as future lepton-hadron scattering facilities. The proposed facilities will address fundamental ques- tions in strong interaction / QCD physics, including a first-ever tomographic mapping...
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
In the present document we outline some reflections related to the next mid-term particle physics strategy: the need for complementary approach among various frontiers in searches and interpretations of NP; an experimental initiative in the aforementioned efforts, especially after the Higgs boson discovery at the LHC; the specific advantages of $e^+e^-$ over hadron colliders; and the...
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Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
We have established a biennial school in Africa, on fundamental physics and its applications (ASP). We find that fundamental physics provides excellent motivation for students of science. The aim of the school is to build capacity to harvest, interpret, and exploit the results of current and future physics experiments and to increase proficiency in related applications. The school is based on...
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Large experiments and projects
The Compact Linear Collider (CLIC) is a TeV-scale high-luminosity linear e$^+$e$^-$ collider under development by international collaborations hosted by CERN. This document provides an overview of the design, technology, and implementation aspects of the CLIC accelerator and the detector. For an optimal exploitation of its physics potential, CLIC is foreseen to be built and operated in...
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Electroweak physics (physics of the W, Z, H bosons, of the top quark, and QED)
The Compact Linear Collider, CLIC, is a proposed e$^+$e$^-$ collider at the TeV scale whose physics potential ranges from high-precision measurements to extensive direct sensitivity to physics beyond the Standard Model. This document summarises the physics potential of CLIC, obtained in detailed studies, many based on full simulation of the CLIC detector. CLIC covers one order of magnitude...
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Accelerator Science and Technology
The EU Horizon2020 program funded the EuPRAXIA design study in 2015. The project is coordinated by DESY and by now has 41 participating institutes from Europe, Asia and the US. It will deliver a conceptual design report in October 2019. EuPRAXIA aims at the construction of an innovative linear electron accelerator based on plasma acceleration technology. This machine will have an accelerating...
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Accelerator Science and Technology
The European Spallation Source ERIC is a joint European organization committed to building and operating the world's leading facility for research using neutrons. The facility uses a 2 GeV proton beam hitting a tungsten target to produce neutrons (predominately boil off neutrons at about 2MeV and spallation product). A recent document from ESS (The ESS Instrument Suite – A Capability Gap...
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Neutrino physics (accelerator and non-accelerator)
The European Spallation Source linear proton accelerator will have a uniquely high beam power of 5 MW to be used for spallation neutron production. The beam power can be raised to 10 MW by increasing the accelerator duty cycle from 4% to 8% and the additional 5 MW used to generate a uniquely intense neutrino Super Beam ESSνSB for measurement of leptonic CP violation. ESSνSB is complementary to...
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Accelerator Science and Technology
The HIBEAM/NNBAR experiment is a two stage experiment for the European Spallation
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Source (ESS) to search for baryon number violation. The experiment would make high sensitivity searches for baryon number violating processes: n → nbar (neutron to antineutron) and n → n′ (neutron to sterile neutron), corresponding to the selection rules in baryon number ΔB = 2, 1 , respectively. The experiment... -
Large experiments and projects
The international large detector, ILD, is a detector concept which has been developed for the electron-positron collider ILC. The detector has been optimised for precision physics in a range of energies between 90~GeV and 1~TeV. ILD features a high precision, large volume combined silicon and gaseous tracking system, together with a high granularity calorimeter all inside a solenoidal magnetic...
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Instrumentation and computing
High Energy Physics is facing a shortage in computing power that has been evaluated between one and two orders of magnitude in the next ten years. To preserve the physics discovery potential and make the best use of the data that will be collected at great cost, it will be essential to explore emerging Information and Communication Technologies (ICT) in close collaboration with leading...
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Instrumentation and computing
In 2017 the experimental High-Energy Physics community wrote a Roadmap for HEP Software and Computing R&D for the 2020s. This effort was organised by the HEP Software Foundation (HSF) and was supported by more than 300 physicists from more than 100 institutes worldwide. It delivered a strategy outlining the most important areas in which investment is needed to ensure the success of our...
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Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
The International Axion Observatory (IAXO) is a next-generation axion helioscope that will search for solar axions with unprecedented sensitivity. IAXO has a unique position in the international landscape of axion experiments, with sensitivity to a region of the axion parameter space that no other experiment can access. In particular, it will explore QCD axion models in the meV to eV mass...
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Large experiments and projects
The International Linear Collider (ILC) being proposed in Japan is an electron-positron linear
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collider with an initial energy of 250 GeV. The ILC accelerator is based on the technology of super-
conducting radio-frequency cavities. This technology has reached a mature stage in the European
XFEL project and is now widely used.
The ILC will start by measuring the Higgs properties, providing... -
Large experiments and projects
A large, world-wide community of physicists is working to realise an exceptional physics program
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of energy-frontier, electron-positron collisions with the International Linear Collider (ILC). This
program will begin with a central focus on high-precision and model-independent measurements of
the Higgs boson couplings. This method of searching for new physics beyond the Standard Model
is... -
Other (communication, outreach, strategy process, technology transfer, individual contributions,…)
With the attached text, the authors wish to draw the attention of the high-energy community on the need to include in its strategic plan an exceptional effort towards attracting and training new young talents to particle accelerator and detector physics.
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Neutrino physics (accelerator and non-accelerator)
Input to the European Particle Physics Strategy by JUNO experiment, main document and addendum.
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Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
LHCSpin aims at installing a polarized gas target in front of the LHCb spectrometer, bringing, for the first time, polarized physics to the LHC. The project will benefit from the experience achieved with the installation of an unpolarized gas target at LHCb during the LHC Long Shutdown 2. LHCb will then become the first experiment simultaneously running in collider and fixed-target mode with...
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Flavour Physics and CP violation (quarks, charged leptons and rare processes)
We propose a new approach to measure very precisely
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the hadronic leading order corrections to the muon $g-2$,
%the $\mu - e$ differential cross section in order to determine
$a_{\mu}^{HLO}$, with space-like data,
measuring the hadronic contribution to the effective electromagnetic coupling
$\alpha$, by means of the elastic scattering $\mu - e$ of 150 GeV muons
(currently available at... -
Large experiments and projects
The Physics Beyond Colliders (PBC) study was mandated by the CERN Management
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in 2016 in order to prepare the next update of the European Strategy
for Particle Physics. The present document reproduces the PBC mandate,
presents the organization of the PBC activities and quotes the executive summary
of the PBC summary report. The full summary report is appended as
addendum. -
Beyond the Standard Model at colliders (present and future)
This document summarizes the physics potential of the High-Energy LHC (HE-LHC), under consideration as a possible future project at CERN. The HE-LHC is a 27 TeV pp collider, to be installed in the LHC tunnel, relying on the 16 T magnet technology being developed for the 100 TeV Future Circular Collider (FCC-hh). The HE-LHC is designed to deliver 10-15 ab$^{-1}$ of integrated luminosity to two...
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Beyond the Standard Model at colliders (present and future)
This document presents the executive summary of the findings of the Workshop on "The physics of HL-LHC, and perspectives on HE-LHC", which has run for over a year since its kick-off meeting on 30 October -- 1 November 2017.
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We discuss here the HL-LHC physics programme. As approved today, this covers {\it (a)} pp collisions at 14~TeV with an integrated luminosity of 3 ab$^{-1}$ each for ATLAS... -
Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
The SHiP Collaboration has proposed a general purpose experimental facility
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at the CERN SPS accelerator to search for feebly interacting GeV-scale particles.
SHiP complements the world-wide program of New Physics searches by covering a large
region of parameter space which cannot be addressed by other experiments.
The SHiP detector is sensitive both to decay and scattering signatures... -
Neutrino physics (accelerator and non-accelerator)
Attachments
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Electroweak physics (physics of the W, Z, H bosons, of the top quark, and QED)
The future lepton colliders proposed for the High Energy and Precision Frontier set stringent demands on theory. The most ambitious, broad-reaching and demanding project is the FCC-ee. We consider here the present status and requirements on precision calculations, possible ways forward and novel methods, to match the experimental accuracies expected at the FCC-ee. We conclude that the...
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Accelerator Science and Technology
This letter highlights the importance of Accelerator Science and Technology for the future of particle physics and suggests some recommendations in this area for the elaboration of the update of the European Strategy for particle physics.
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National road maps
This document sets out the input from the UK Particle Physics
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community to the update of the European Strategy for Particle
Physics. It is submitted by the UK Particle Physics
Advisory Panel and represents the consensus view of the UK
community. -
56. Ultra-relativistic Heavy-Ion Collisions: Inputs of the Italian community for the ESPPU 2018–2020Strong interactions (perturbative and non-perturbative QCD, DIS, heavy ions)
This document was prepared by the community that is active in Italy, within INFN (Istituto Nazionale di Fisica Nucleare), in the field of ultra-relativistic heavy-ion collisions. The experimental study of the phase diagram of strongly-interacting matter and of the Quark--Gluon Plasma (QGP) deconfined
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state will proceed, in the next 10--15 years, along two directions: the high-energy regime at... -
Dark matter and dark sector (accelerator and non-accelerator dark matter, dark photons, hidden sector, axions)
We propose to combine state of the art optical instrumentation with very high pulsed magnetic fields to study magneto-optical phenomena in the quantum vacuum, i.e. the experimental proof of the magneto-optical properties of quantum vacuum.
Our goal is to realize the first ever measurement of the linear magnetic birefringence of vacuum which corresponds to a variation in the velocity of...
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