We will report on our study focusing on developing a logical circuit for the Leven-0 (L0) Endcap Muon Trigger in the HL-LHC ATLAS experiment. We aim to achieve systematic and efficient firmware validation through a comprehensive study across hardware, software, and databases. Specific approaches include conducting systematic tests using benchmarking artificial track data, high-statistics...
SAND, System for on-Axis Neutrino Detection, will be one of the three components of the DUNE Near Detector complex and it will be placed permanently on the axis of the neutrino beam. It consists of a solenoidal magnet, an electromagnetic calorimeter, an inner Straw Tube Tracker, and finally GRAIN (GRanular Argon for Interaction of Neutrinos) a 1-ton liquid argon target, placed in the upstream...
We propose here a set of new methods to directly detect light mass DM through its scattering with abundant atmospheric muons or accelerator beams. Firstly, we plan to use the free cosmic muons interacting with dark matter in a volume surrounded by tracking detectors, to trace possible interaction between dark matter and muons. Secondly, we will interface our device with domestic or...
We present an innovative charge detector designed with high resolution and a wide dynamic range to fulfill ion beam monitoring requirements. The detector prototype, constructed using HERD Si photodiodes and Calo PD readout electronics, underwent rigorous testing during HERD and AMS beam tests at CERN SPS facilities. Initial testing showcased the detector's exceptional performance, emphasizing...
Monolithic Water Cherenkov Neutrino detectors are crucial for understanding neutrino astrophysics and oscillations. Traditional calibration involves analyzing calibration data sequentially, which may overlook parameter correlations and necessitates frequent retuning of reconstruction algorithms. This leads to duplicated efforts and increased detector-related uncertainties in next-generation...
The ALICE data-taking concept for the LHC Run 3 and Run 4 allows the collection of minimum bias collisions in a continuous readout mode, their subsequent asynchronous reconstruction, and the final offline selection of events for permanent storage. This design enables the implementation of dedicated event selection schemes, tailored for a given observable, and avoids the need for dedicated...
The ATLAS experiment, located on LHC at CERN, requires a flexible and comprehensive Level-1 Trigger configuration to meet its diverse scientific goals. A robust framework validates this configuration throughout every year of data-taking. The Level-1 Central Trigger system (L1CT), integral for detector readout, is software-programmable and relies on machine-readable files for Level-1 Trigger...
The Tile Calorimeter (TileCal) is the hadronic calorimeter covering the central region of the ATLAS experiment at the LHC. This sampling device is made of plastic scintillating tiles alternated with iron plates and its response is calibrated to electromagnetic scale by means of several dedicated systems. The accurate time calibration is important for the energy reconstruction, non-collision...
The ATLAS experiment in the LHC Run 3 is recording up to 3 kHz of fully-built physics collision events out of an LHC bunch crossing rate of up to 40 MHz, with additional rate dedicated to partial readout. A two-level trigger system selects events of interest to to cover a wide variety of physics while rejecting a high rate of background events. The selection of events targets both generic...
Neutrinoless double beta decay experiments are pushing their sensitivities to reach half-lives on the order of $10^{28}$ years. A promising approach involves detecting the daughter ion generated in the decay. The NEXT collaboration is testing chemical sensors to identify the Ba$^{2+}$ ion produced in the double beta decay of $^{136}$Xe, coinciding with the emission of two electrons. This...
The Fermilab Muon g-2 experiment has measured the positive muon magnetic anomaly to an unprecedented precision of 0.2 ppm, based on the data taken in the first three years. The magnetic anomaly is derived from the ratio between the muon anomalous spin precession frequency in a magnetic storage ring and the magnetic field experienced by the muon ensemble. In addition, systematic effects on the...
The demands of HL-LHC data processing and the challenges of future colliders are pushing to re-think High Energy Physics (HEP) computing models.
This talk aims at providing transparent resources for users and experiments, with suitable tools and environment, coupled with flexible and cloud-independent deployment in the framework of the ICSC project (Italian National Centre on HPC, Big Data...
The ATLAS Tile Calorimeter (TileCal) is a sampling hadronic calorimeter covering the central region of the ATLAS detector at the Large Hadron Collider. It performs the precise measurement of hadrons, jets, hadronically decaying tau-leptons, missing transverse momentum as well as provides input signal to the Level-1 Calo Trigger. The calorimeter consists of thin steel plates and about 460,000...
The DANSS detector is placed under the reactor core of Kalinin NPP and collects up to 5000 ν events per day. Experiment is aimed to scrutinize the sterile ν hypothesis, and obtained limits exclude practically all sterile neutrino parameters preferred by BEST experiment. The main goal of the energy calibration is the determination of the energy scale coefficient $K_Е$, however, the Birks and...
The Higgs factory is a kind of special energy consumer and the environmental impact for the given scientific outcome must be optimized carefully. The carbon footprint of CEPC was estimated based on simplified model including both construction process and operation process. The environmental impact of CEPC with different circumference, different energy source, different SR power and different...
A new front-end ASIC named "PIST" (pico-second timing) has been successfully developed using 55 nm CMOS technology for the silicon photomulplier (SiPM) readout with a single channel with a major aim of fast timing. We performed extensive tests to evaluate the timing performance of a dedicated test stand. The results show that the system timing resolution can reach sub 10 ps, while the PIST...
The ATLAS Inner Detector will be completely replaced with an all-silicon tracking detector (ITk) to cope with the new challenging conditions arising with the HL-LHC. The pixel detector will be located in the innermost part of the ITk and consists of five layers of detectors, with different thickness and sensor technology. n-in-p planar hybrid modules 150 μm thick and 100 μm thick will...
In the context of the CMS improved Resistive Plate Chambers (iRPC) upgrade, a strategy has developed that leverages cosmic muon triggers along with web-based automation for Quality Control (QC) steps. A key aspect of this approach was finding a way to bridge slow and fast control parameters, a crucial step towards achieving full automation. This integration not only enhances the efficiency and...
This poster presents the efforts to boost the performance and the reliability of the Resistive Plate Chambers (RPC) of the muon system of the Compact Muon Solenoid (CMS) experiment. The focus is on both, maintenance of the existing RPC chambers and the installation of the improved RPC detectors (iRPC) for the Phase-2 upgrade. The RPC system consolidation is based on the cooling system upgrade...
Improving the identification of jets initiated from gluon or quark will impact the precision of several analysis in the ATLAS collaboration physics program. Using jet constituents as inputs for developing quark/gluon taggers gives the models access to a superset of information with respect to the use of high-level variables. Transformer architecture is used to learn long-range dependencies...
Dark matter candidates in different models with an extended Higgs sector as the THDM, NTHDM, THDMS are discussed and compared. The phenomenology of prospects of the models at different lepton colliders, electron-positron colliders as well as a muon collider are analyzed and the relevance of the different colliders features w/wo polarized beams etc. discussed.
LHC prospects, experimental,...
Darkside-20k is an underground direct dark matter search experiment designed to reach a total exposure of 200 tonne-years nearly free from instrumental backgrounds. The detector's core is a dual-phase Time Projection Chamber filled with 50 tonnes of low-radioactivity liquid argon. The TPC wall is surrounded by PMMA acting as a neutron veto, immersed in an argon bath.
The key technological...
As a fourth-generation synchrotron light source, the experiments carried out by HPES will be shifted to high throughput, multi-modal, ultra-fast frequency, and cross-scale forms. The annual data flux produced by the experiment is expected to enter the "Exa-scale" era. Faced with such high-throughput experimental data, the arithmetic power of a single computing node is difficult to meet the...
To study the feasibility of a shallow-depth neutrino detector, a Cosmic Muon Veto Detector (CMVD) is being built around the mini-ICAL detector at the IICHEP in Madurai, India. CMVD will use extruded plastic scintillators for muon detection and wavelength-shifting fibres coupled with silicon photomultipliers (SiPMs) for signal readout. A power supply source is needed for biasing the SIPMs,...
Core-collapse supernova bursts are among the most energetic phenomena known in the universe. PandaX-4T, a dark matter and neutrino experiment that employs a dual-phase xenon TPC as the detector, has the ability to detect neutrinos from supernova bursts via the coherent elastic neutrino-nucleus scattering process. In this study, the total number of supernova neutrino events in PandaX-4T is...
The Jiangmen Underground Neutrino Observatory (JUNO) is a neutrino detector currently under construction in China. It will use 20 ktons of liquid scintillator as the target medium, which will be surrounded by 45,000 photomultiplier tubes to collect the scintillation light produced by the interacting particles. The JUNO physics program encompasses a comprehensive range of measurements,...
We study detection possibilities of the Odderon interaction in the elastic meson-nucleon scattering, by measuring K0s regeneration at CERN, using the planned HIKE (Phase II) and existing LHCf infrastructures. Basic geometrical requirements and kinematic constraints of such experimental efforts at CERN are considered and the published predictions of the Odderon signatures in K0s regeneration...
We present an updated set of SKMHS diffractive parton distribution functions (PDFs). In addition to the diffractive deep-inelastic scattering (diffractive DIS) datasets, the recent diffractive dijet cross-section measurement by the H1 experiment from the HERA collider are added to the data sample. The new set of diffractive PDFs, entitled SKMHS23 and SKMHS23-dijet, are presented at NLO and...
Supersymmetry (SUSY) is one of the most interesting theories for Physics beyond the Standard Model and LHC experiments have searched for its evidence during Run1 and Run2. The search for direct production of top squark pairs in which each stop decays in two, three or four bodies depending on the hypotheses on its mass was performed, on data collected during Run2, in final states with two...
The LUX-ZEPLIN (LZ) dark matter search experiment, centered on a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility in Lead, South Dakota, USA, has the world’s leading sensitivity to searches for Weakly Interacting Massive Particles (WIMPs). It is comprised of a 10-tonne target mass (7-tonne active) and outfitted with photomultiplier tubes in both...
Domain walls are a type of topological defects that can arise in the
early universe after the spontaneous breaking of a discrete symmetry. This occurs in several beyond Standard Model theories with an
extended Higgs sector such as the Next-to-Two-Higgs-Doublet model
(N2HDM). In this talk I will discuss the domain wall solution related
to the singlet scalar of the N2HDM as well as...
Tau leptons serve as an important tool for analyzing the production of Higgs and electroweak bosons in the context of the Standard Model as well as for physics phenomena beyond the Standard model. Therefore, an accurate reconstruction and identification of the hadronically decaying tau leptons is a crucial for contemporary and future high energy physics experiments. Building on the results of...
The ATLAS hadronic Tile Calorimeter (TileCal) is one of the sub-systems of the ATLAS detector installed at the LHC. The calorimeter is composed of alternating iron plates and plastic scintillating tiles. Our study aims to determine the azimuthal uniformity of the energy response and intercalibration of the TileCal longitudinal layers using isolated muons. The muons from the decay of the W...
The ATLAS Collaboration has developed a variety of Education and Outreach activities designed to engage young minds at home and in the classroom. This material ranges from an original particle physics baby book to colouring books, onlne printable information sheets and a challenging Masterclass program using real data from LHC proton collisions. Here we present our most recent developments...
Communicating the science and achievements of the ATLAS Experiment is a core objective of the ATLAS Collaboration. This contribution will explore the range of communication strategies adopted, provide an overview of ATLAS’ digital communication platforms - including its website and social media - and evaluate their impact on target audiences. Lessons learned and best practices will be shared,...
The ATLAS Collaboration hosts several popular programmes bringing visitors to our detector at CERN or via video conference from remote locations. ATLAS physicists take advantage of technical stops and shutdowns to show off the world’s largest collider detector to local audiences via guided visits and to remote audiences via virtual visits. Throughout the year, local visitors join guided tours...
Several leptogenesis models predict that the CP violation (CPV) necessary for the generation of the observed baryon asymmetry is driven exclusively by the CP-violating phase in the PMNS leptonic mixing matrix, δCP. The value of δCP must be measured with the highest precision in order to verify or reject some of these and the various lepton flavours models, each of which predicts a specific δCP...
The ESSnuSB project aims to measure the leptonic CP violation at the second neutrino oscillation maximum using an intense neutrino beam.
ESSnuSB+ is a continuation of this study which focuses on neutrino interaction cross-section measurement at the low neutrino energy region as well as the study of the sensitivity of the experimental set-up to additional physics scenarios. Among them, it...
Event-by-event fluctuations of mean transverse momentum, $\langle p_{\rm{T}}\rangle$, help to characterize the properties of the system created in heavy-ion collisions and are linked to the phase transition dynamics from quark-gluon plasma (QGP) to a hadron gas. In this contribution, $\langle p_{\rm{T}}\rangle$ fluctuations of charged particles produced in pp at $\sqrt{s}= 5.02$ TeV, Xe-Xe and...
The INO-ICAL collaboration has built a prototype detector called miniICAL at IICHEP, Madurai, India. A Cosmic Muon Veto detector (CMVD) based on an extruded plastic scintillator (EPS) is being built on top of the miniICAL detector to investigate the feasibility of constructing a large-scale neutrino experiment at shallow depths. All the individual components of the veto walls, e.g, SiPM $\&$...
Within the framework of the Standard Model, the Higgs sector is minimally composed of one doublet of complex scalar fields, essential for achieving spontaneous electroweak symmetry breaking. Nevertheless, a myriad of advanced theories transcending the Standard Model envision more intricate Higgs sectors, leading to the prediction of charged Higgs bosons. Notably, the Georgi- Machacek(GM) model...
Resonances play a crucial role in probing the characteristic of the hadronic phase, created in ultra-relativistic heavy-ion collisions. Rescattering and regeneration processes influence the measurable resonance yields and $p_{\rm T}$ spectra shapes. Measurements of resonance productions in high-multiplicity pp collisions could provide insight into the possible presence of a hadronic phase in...
Monte-Carlo (MC) simulations play a key role in high energy physics, for example at the ATLAS experiment. MC generators evolve continuously, so a periodic validation is indispensable for obtaining reliable and reproducible physics simulations. For that purpose, an automated and central validation system was developed: PMG Architecture for Validating Evgen with Rivet (PAVER). It provides an MC...
We studied the CP violating phases in the neutral kaon oscillations and decays in the effective field theory of kaons, without going into the quark level, and connected the CP violating parameters to the Bargmann invariants and hence to the geometrical phases. We extended this approach to demonstrate how the CP violating parameters appearing in the processes of baryogenesis and leptogenesis...
We discuss far-forward production of $D$ mesons and neutrinos in $pp$-collisions at the LHC. We include the gluon-gluon fusion, the intrinsic charm (IC) and the recombination mechanisms. We show that the IC and recombination give negligible contributions at the LHCb kinematics, i.e. in the interval $2 < y < 4.5$ and start to be crucial at larger rapidities, i.e. for $y > 6$. We present energy...
The study of nucleon pairs momentum correlations can provide input for describing the formation of light nuclei, such as deuterons, through the coalescence of protons and neutrons into bound states. The femtoscopy technique is applied to measure the correlation in momentum among protons emitted after the hadronization phase of a hadronic collision. The spatial properties of the proton-emitting...
Performing a precision measurement of the tritium $\beta$-decay spectrum, the Karlsruhe Tritium Neutrino (KATRIN) experiment aims at measuring the neutrino mass with a sensitivity better than $0.3$ eV/c${}^2$ (90% C.L.) after 1000 measurement days. The current world-leading upper limit of $m_\nu \leq 0.8$ eV/c${}^2$ (90% C.L.) was determined from combined analysis of the first two measurement...
The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation large liquid-scintillator neutrino detector, which is designed to determine the neutrino mass ordering. Moreover, high-energy atmospheric neutrino measurements could also improve its sensitivity to mass ordering via matter effects on oscillations, which depend on the capability to identify the flavors of neutrinos....
The DeepTau tau identification algorithm, based on Deep Neural Network techniques, has been developed to reduce the fraction of jets, muons and electrons misidentified as hadronically decaying tau leptons by the Hadron-plus-strip algorithm. Its recently deployed version 2.5 for Run3 has brought several improvements to the existing algorithm, e.g. the addition of domain adaptation to reduce...
A fundamental aspect of CMS researches concerns the identification and characterisation of jets originating from quarks and gluons produced in high-energy pp collisions. Electroweak scale resonances (Z/W bosons), Higgs bosons and top quarks are often produced with high Lorentz-boosts, where their products become highly collimated large and massive jets, usually reconstructed as AK8 jets....
The T2K long-baseline neutrino experiment in Japan harnesses its sensitivity to search for CP violation in neutrino sector by observing the appearance of electron (anti-)neutrinos from a beam of muon (anti-)neutrinos at its far detector, Super-Kamiokande (SK). For the next iteration of T2K's oscillation analysis, a new $\nu_e$ appearance sample was developed, targeting charged-current single...
Mu2e will search for the neutrinoless coherent μ^-→e^- conversion in the field of an Al nucleus and improve the current limit by 4 orders of magnitude. Mu2e consists of a straw-tube tracker and crystal calorimeter in a 1T B field complemented by a plastic scintillation counter veto to suppress cosmic ray backgrounds. Tracker geometry makes track reconstruction a quite unique problem. The first...
The poster collects measures adopted by the ERC over the years in order to facilitate the participation of diverse groups, and it presents some of the main results of these, with a focus on gender and physical sciences.
We integrated the detector and the readout electronics for a new inner-station TGC system at the ATLAS experiment and evaluated the performance. The TGC detectors installed in the endcap inner stations of the ATLAS detector will be upgraded from the doublet to triplet chambers for an improved selectivity of the first-level muon trigger at the HL-LHC. The challenging structure of fitting a...
The flagship activity of the International Particle Physics Outreach Group (IPPOG) is the International Masterclasses (IMC) in particle physics. This very successful programme brings cutting-edge science to high-school students. Invited to a university or laboratory, the students spend a day of immersion in particle physics, learning about the standard model and beyond, about experimental...
Light sterile neutrinos with a mass at the eV-scale could explain several anomalies observed in short-baseline neutrino oscillation experiments. The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to determine the effective electron anti-neutrino mass via the kinematics of tritium $\beta$–decay. The precisely measured $\beta$-spectrum can also be used to search for the signature of...
In this talk, we report recent progress on the development of a local renormalisation formalism based on Causal Loop-Tree Duality. By performing an expansion around the UV-propagator in an Euclidean space, we manage to build counter-terms to cancel the non-integrable terms in the UV limit. This procedure is then combined with the so-called causal representation, and the UV expansion is...
We investigate the effects of parameters in the Bestest Little Higgs Model (BLHM) on rare flavor-changing decays of the top quark. In this study, we incorporate new flavor mixing terms between the light quarks of the Standard Model (SM) and the fermions and bosons of the BLHM. We compute the one-loop contributions from the heavy quark $(B)$ and the heavy bosons $(W^{\prime\pm}, \phi^{\pm},...
The ATLAS physics program at HL-LHC calls for a precision in the luminosity measurement of 1%. To fulfill such requirement in an environment characterized by up to140 simultaneous interactions per crossing (200 in the ultimate scenario), ATLAS will feature several luminosity detectors. LUCID-3, the upgrade of the present ATLAS luminometer (LUCID-2), will fulfill such a condition. In this...
Precise luminosity determination is of paramount importance for the ATLAS physics program. A set of complementary luminometers is crucial to ensure high stability and precision of the luminosity measurement. In 2018, two Timepix3 detector setups were installed to study their capabilities of measuring luminosity. The detectors benefit from a fine segmentation and a narrow per-pixel time...
Searches for beyond the SM physics can involve heavy resonances identified by multi-prong jets. Calibration techniques rely on SM candles, which makes it challenging to calibrate jets with more than three prongs. This talk will highlight a new method for calibrating the tagging of multi-prong jets using the Lund Jet Plane to correct the substructure of simulated jets. The technique is based on...
Tau leptons are very important objects for testing the predictions of the standard model, such as the characterization of the Higgs boson. Tau leptons are also vital in the search for beyond the standard model physics, as many models predict new particles which decay into final states with tau leptons. An efficient tau lepton trigger is therefore essential to maximize the physics reach of the...
The second MoEDAL Apparatus for Penetrating Particles (MAPP-2) is proposed for deployment at the High Luminosity LHC (HL-LHC) a large instrumented tunnel decay volume adjacent to IP8 with a volume of 1200m3. The detector utilizes large area scintillator panels with x-y WLS fibres readout by SiPMs arranged in a “Russian Doll configuration to measure the vertices of very Long-Lived Particles...
Analysis of the high-multiplicity triggered pp data at $\sqrt{s} =$ 13 TeV, obtained by the ALICE detector, is carried out to study the event-by-event fluctuations of mean transverse momentum ($p_{\rm T}$) using two particle correlator, $\sqrt{C_m}/M(p_{\rm T})_m$. The driving force behind these studies is the search for dynamical fluctuations that may be associated with the formation of QGP...
The ATLAS measurement of differential cross-sections for the production of four charged leptons and two jets with the full Run 2 pp collision data will be presented. The cross-sections were measured in two distinctive signal regions characterised by an enhanced contribution from events arising out of strong and electroweak interactions, respectively. An iterative unfolding procedure was used...
KATRIN aims to measure the electron neutrino mass
$𝑚_𝜈$ with <0.3 eV/$𝑐^2$ (90 % C.L.) sensitivity, by measuring the $^3$H β spectrum near its endpoint $𝐸_0$. In the fit yielding the searched for quantity $𝑚^2_𝜈$ also the parameter $𝐸_0$ is fitted. Since both parameters are highly correlated in the fit any systematic effect influencing the parameter $𝑚^2_𝜈$ will also manifest in $𝐸_0$. After...
The associated production of the Higgs boson with the top quark allows to directly probe the Top Yukawa coupling, which is a key parameter for the Standard Model. The presented ttH(bb) analysis exploits the distinctive signature of the large H-> bb branching ratio and the leptonic decays of the top quarks and, uses the full Run 2 dataset collected with the ATLAS detector at the centre-of-mass...
The first inclusive cross section measurements for the diboson production of a W and a Z bosons (WZ) in proton-proton collisions at a centre-of-mass energy of 13.6 TeV are presented. The data used were recorded with the CMS detector of the LHC during 2022. Events containing three electrically charged leptons in the final state, which can be electrons or muons, are analysed. The selection is...
SuperCDMS SNOLAB is a 4th generation direct detection experiment that will employ Si and Ge crystals equipped with Transition Edge Sensors (TESs) to search for low mass dark matter particles (<10 GeV/$c^2$). These detectors use larger crystals compared to their predecessors and feature 12 phonon readout channels each. The position dependence of the detector response broadens the energy...
The production of quarkonia in vacuum is not fully understood. Theoretical models offer different predictions and experimental measurements are needed to help in distinguishing and improving them. Furthermore, understanding the quarkonium production offers an insight into the quark-gluon plasma properties in heavy-ion collisions.
This poster presents results of the latest $\Upsilon$...
The Short-Baseline Near Detector (SBND) is a 100-ton scale Liquid Argon Time Projection Chamber (LArTPC) neutrino detector positioned in the Booster Neutrino Beam at Fermilab, as part of the Short-Baseline Neutrino (SBN) program. The detector is currently being commissioned and is expected to take neutrino data this year. Located only 110 m from the neutrino production target, it will be...
Top quarks, the heaviest elementary particles carrying colour charges, are considered to be attractive candidates for probing the quark-gluon plasma produced in relativistic heavy-ion collisions. In proton-lead collisions, top-quark production is expected to be sensitive to nuclear modifications of parton distribution functions at high Bjoerken-x values, which are difficult to access...
Upgrades to the CMS Muon system for the High-Luminosity LHC (HL-LHC) include the new GEM detectors GE1/1, GE2/1 and ME0. The development of the GEM-Online Monitoring System (OMS) is crucial for their successful operation. The GEM-OMS provides real-time monitoring of key parameters, enabling the detection of anomalies by filtering data directly through different controllers. With a focus on...
This contribution addresses the need for reliable and efficient data storage in the high-energy physics experiment called AMBER. The experiment generates sustained data rates of up to 10 GB/s, requiring optimization of data storage. The study investigates single-disk performance, including random and sequential disk operations, highlighting the impact of parallel access and disk geometry. A...
The LEP precision physics requirements on the theoretical precision tag for the respective luminosity were 0.054 % (0.061%) at $M_Z$, where the former (latter) LEP result has (does not have) the pairs correction. For the contemplated FCC-ee, ILC, and CEPC Higgs/EW factories, one needs improvement at $M_Z$ to at least 0.01% for the theoretical precision tag. We discuss the paths one may take...
PMT is widely used in high energy physics experiments to detect single photons. The PMT single photoelectron (PE) response (SER) is a template function describing the pulse shape of single PE. In PMT waveform simulation and analysis, the shape of SER are usually fixed among different pulses from the same PMT. This work proposes a linear model using multiple Gaussian parameters and multiple...
The Super Tau-Charm Facility (STCF) is a new generation $e^+ e^-$ collider designed for various physics topics in the $\tau$-charm energy region. The particle identification (PID), as one of the most fundemental tools in physics analysis, is crutial for achieving excellent physics performance. In this work, we present a powerful PID software based on ML techniques, including a global PID...
The SuperNEMO experiment aims to search for neutrinoless double beta decay. Whilst the standard approach relies on detecting the sum of the kinetic energy of two emitted electrons, SuperNEMO has an additional tracking detector, enabling investigation of kinematic parameters of the decay and further background suppression through post-processing. Comprising 2034 drift cells operating in Geiger...
The study of the produced hot and dense matter formed in heavy-ion collisions at the LHC allows the characterization of the quark--gluon plasma (QGP), the deconfined state of quarks and gluons. The measurement of the ratio of yields of charged particles in central to peripheral heavy-ion collisions ($I_{\rm{CP}}$) provides strong constraints on the quenching mechanism in the QGP. In this talk,...
The current ATLAS Inner Detector is to be replaced with the all-silicon Inner Tracker (ITk) to cope with high pile-up and harsh radiation environment expected at the HL-LHC. During prototyping and early production phases of the ITk project, the performance of all types of ITk strip modules has been extensively evaluated using high-energy electron or hadron beams available at the DESY II and...
KKMChh is a precision Monte Carlo program for photonic and electroweak radiative corrections to hadron scattering, implementing the amplitude level exponentiation originally developed for electron-positron scattering at the quark level, modeling initial and final state QED radiation as well as initial-final interference to all orders in a soft-photon approximation, adding hard photon...
Scenario with a lepton-flavor-violating (LFV) interaction, either due to LFV coupling of a scalar or a vector boson, is an intriguing BSM phenomenon. This LFV coupling in the presence of muons leads to a rich phenomenology including an extra contribution to muon anomalous magnetic moment. With the low-energy effective coupling ${\cal L}_{\phi e\mu}=\phi\bar...
Long-range angular correlations between particles could potentially reveal physics beyond the Standard Model, such as Hidden Valley (HV) scenarios. Our emphasis is on a hidden QCD-like sector, where the emergence of HV matter alongside QCD partonic cascades could amplify and extend azimuthal correlations among final-state particles.
Our study at the detector level focuses on the...
We investigate the effect of photon-axionlike particle (ALP) oscillations in the gamma-ray spectra of fourth most distant blazar QSO B1420+326 measured by Fermi-LAT and MAGIC around the flaring activity in January 2020. We set 95% CL upper limit on the photon-ALP coupling constant $g_{a\gamma} < 2 \times 10^{-11}$ GeV$^{-1}$ for ALP masses $m_{a} \sim 10^{-10} - 10^{-9}$ eV. Assuming the...
Science students encounter multiple challenges with employment or upper level courses thus teaching them solid lab skills and analysis provide needed solid foundation. The lab for intro-level Physics I and II must provide students with practical experience and laboratory skills that would be further developed by upper-level courses.
A new approach was instituted to provide meaningful lab...
The MIP Timing Detector (MTD) is a new sub-detector planned for the Phase 2 upgrade of the CMS experiment at the CERN LHC, designed to measure the time-of-arrival of charged particles with a resolution of 30-60 ps. The barrel region of MTD (Barrel Timing Layer, BTL) is made of arrays of Cerium-doped Lutetium-Yttrium Oxyorthosilicate (LYSO:Ce) scintillating bars, readout by silicon...
We simulate deuteron production in Pb+Pb collisions at 2.76 TeV and focus particularly on the elliptic flow. In coalescence, the deuteron yield depends on the size of the region producing the coalescing nucleons. The elliptic flow also depends on how the size of the effective emitting region varies with the azimuthal angle. Thus the elliptic flow of deuterons from coalescence is expected to be...
We investigate the potentially observable consequences at the LHC of resonant production of a vectorlike quark pair through an ultraheavy diquark scalar. For this study, we performed comprehensive Monte-Carlo simulations for a diquark mass of 7 TeV or 8.5 TeV, and a vectorlike quark mass of 2 TeV. We assume that each vectorlike quark decays into a W boson and a b quark, and given the very...
The MUonE experiment proposes a novel approach to determine the hadronic contribution to the muon anomalous magnetic moment, by measuring the running of the QED coupling through the analysis of $\mu e$ elastic scattering events. The experiment will be carried out at CERN North Area, by scattering the high intensity 160 GeV muon beam available on a low-Z target. The detector would have 40...
The ATLAS Online Luminosity Calculator (OLC) is a standalone component of luminosity-related software responsible for the calibration of online luminosity measurements from the various ATLAS luminometers, as well as for providing an interface between ATLAS and the LHC. It also provides the infrastructure for synchronizing the LHC beam movements with the ATLAS DAQ during beam separation scans....
Though the Standard Model has been a very successful theory, there are still many questions left unanswered like incorporation of gravity into SM, neutrino masses, matter-antimatter asymmetry,... One of the possible solutions to address these challenges is the extension of the present SM by incorporating an additional Higgs doublet. This search aims at exploring the presence of a scalar or...
The Daya Bay experiment has studied antineutrino emission at low-enriched uranium reactors, with detectors spanning a large baseline from the reactor cores ($\sim$2km). This poster presents results of a search for the mixing of a sub-eV sterile neutrino based on Daya Bay's full data sample. The result is obtained in the minimally extended 3+1 neutrino mixing model. The analysis benefits from a...
An integrated luminosity of 138 fb-1 collected by CMS during Run 2, allows to perform search for new particles with unprecedented sensitivity. The search for a scalar particle with higher mass than the Higgs Mass boson is performed investigating resonances that decays into two W bosons. Results are interpreted in a model independent way as well as in various extensions of the standard models,...
The $U(1)_{B-L}$ model contains three heavy Right-Handed (RH) neutrinos, essential for anomaly cancellation and preserving gauge invariance. The model is attractive due to its relatively simple theoretical structure, and the crucial test of the model is the detection of the new heavy neutral $Z'$ gauge boson, the heavy-neutrinos $\nu_R$, and the new Higgs boson $H$. With these motivations, we...
A search for HH or $X\to SH$ production in final states with one or two light leptons and a pair of $\tau$-leptons is presented. The search uses a $pp$ collision data sample with an integrated luminosity of 140 fb$^{-1}$, recorded at a center-of-mass energy of $\sqrt{s} = 13$ TeV, with the ATLAS detector at the Large Hadron Collider. The search selects events with two hadronically decaying...
This poster presents results from a search for exotic decays of the 125 GeV Higgs boson (H) to a pair of light pseudoscalars a, where one pseudoscalar decays to two b quarks and the other to a pair of muons or tau leptons (H ->aa->2b2mu/2b2tau). The analysis is performed on the full CMS Run-2 dataset of proton-proton collisions at center-of-mass-energy 13 TeV, corresponding to an integrated...
Supersymmetry (SUSY) models with nearly mass-degenerate higgsinos could solve the hierarchy problem as well as offer a suitable dark matter candidate consistent with the observed thermal-relic dark matter density. However, the detection of SUSY higgsinos at the LHC remains challenging especially if their mass-splitting is O(1 GeV) or lower. A novel search using 140 fb^{-1} of proton-proton...
We present searches for Lepton Flavor Violation (LFV) in the top quark sector using 138 fb^{-1} of proton-proton collision data collected by the CMS experiment at a center-of-mass energy of 13 TeV. The analysis focuses on events containing a single muon and an additional lepton, either a tau or an electron. Modern deep learning techniques are employed to distinguish between signal and...
The discovery of neutrino oscillations has provided experimental evidence that neutrinos have nonzero masses. Cosmological constraints as well as direct measurements indicate that the neutrino masses are orders of magnitude smaller than the masses of other SM fermions. The introduction of new heavy states, N, with right-handed chirality, known as heavy neutral leptons (HNLs), is a possible...
The "4321" renormalizable model proposes a mechanism that accommodates the experimental anomalies found in B-meson decays while remaining consistent with all other indirect flavor and electroweak precision measurements. Among the fundamental particles provided by the 4321 model are three families of Vector-Like Leptons (VLLs), with a mass predicted to be around 1 TeV. Using the full dataset...
This contribution presents a search for rare decays of the Z and Higgs bosons to a photon and a charmed meson J/$\Psi$ or $\Psi'$, which subsequentially decays to a pair of muons. The employed data set corresponds to an integrated luminosity of 123 fb$^{-1}$ of proton-proton collisions at center of mass energy $\sqrt{s} = 13$ TeV, collected with the CMS detector during LHC Run-2. The analysis...
After the discovery of the Higgs boson at the Large Hadron Collider (LHC) at CERN, we undoubtedly live in a phase characterized by a lack of discoveries of Beyond Standard Model physics in particles accelerators. Anomaly Detection is a novel machine learning approach that could be used to resolve this stalemate, as it allows to be very general with the searched signatures without losing...
Many new physics models, such as the Sequential Standard Model, Grand Unified Theories, models of extra dimensions, or models with eg. leptoquarks or vector-like leptons, predict heavy mediators at the TeV energy scale. We present recent results of such searches in leptonic final states obtained using data recorded by the CMS experiment during Run-II of the LHC.
Measurements of two-neutrino double beta decay ($2\nu\beta\beta$) have played a key role in advancing the understanding of neutrino properties. Further exploration of $2\nu\beta\beta$ and its possible exotic decay modes (decay with right-handed or sterile neutrinos) may provide further knowledge. The recently published improved description of the shape of $2\nu\beta\beta$ spectrum provides a...
The high-luminosity upgrade of the LHC (HL-LHC) will lead to a factor of five increase in instantaneous luminosity, making it possible for experiments as CMS and ATLAS to collect ten times more data. This proton-proton collision rate will result in higher data complexity, making more sophisticated trigger algorithms unavoidable during the HL-LHC phase. The availability of information on the...
The Inert Triplet Model (ITM) is a well-studied scenario that contains a neutral scalar Dark Matter (DM), along with an inert charged scalar in a compressed mass spectrum. The DM constraints corner the ITM to a narrow TeV-scale mass range, the production of which is inefficient at the present and future iterations of the LHC. However, Vector Boson Fusion (VBF) at a future Muon Collider...
The axion provides a solution for the strong CP problem and is one of the promising candidates for dark matter. The leading approach is probing gamma-ray emission from the nuclear transitions associated with the axion-nucleon coupling. Monochromatic 14.4 keV axions would be produced by de-excitation of the thermally excited isotope of iron-57 in the Sun and could be detected as a 14.4 keV...
The Neutrino Experiment with a Xe TPC (NEXT) is searching for neutrinoless double beta decays (0nubb) of Xe-136 using high pressure xenon gas time projection chambers (HPXeTPC). The power of electroluminescent HPXeTPCs for 0nubb derives from their excellent energy resolution (FWHM <1%), and their topological classification of signal events. The NEXT-100 detector was successfully constructed...
Coherent elastic neutrino-nucleus scattering (CEvNS) can provide interesting physics such as measuring neutrino properties and proving non-standard interactions. CEνNS was observed in 2017 with neutrinos from a stopped pion source, but detecting CEνNS from lower-energy reactor neutrinos is still challenging. Neutrino Elastic-scattering Observation with NaI(Tl) experiment (NEON) is design to...
The future e+e- colliders offer excellent facilities for SUSY searches. The stau, superpartner of the tau-lepton, is one of the most interesting particles for these searches, being likely the lightest of the sfermions, first one that could be observed, and it can be regarded as the worst and thus most general scenario for the searches.
The prospects for discovering stau-pair production at...
We will discuss possible future studies of $\gamma\gamma\to\gamma\gamma$ process using two future detectors. We include different $\gamma\gamma\to\gamma\gamma$ scattering mechanisms, such as double-hadronic photon fluctuations, t/u-channel neutral pion exchange or resonance excitations and deexcitation. Low mass resonant contributions will be included here. The resonance contributions give...
The goal of the SuperNEMO experiment is the search for neutrinoless double-beta decay (0𝜈𝛽𝛽), the observation of which would prove that the neutrino is a Majorana particle. As 0𝜈𝛽𝛽 is a hypothetical and extremely rare process, it is essential to have the lowest level of background possible. 222Rn is a gaseous isotope which could emanate from the detector materials or diffuse from the air of...
Recent measurements in small collision systems at the LHC show striking similarities between high multiplicity pp, p–Pb collisions and Pb–Pb collisions. In particular, study of hadronic resonances provide valuable information about the final state hadronic interaction. Due to the short lifetime, resonances decay inside the hadronic medium after the chemical freezeout and their decay daughters...
A 20-kiloton liquid scintillator detector is designed in the Jiangmen Underground Neutrino Observatory (JUNO) for multiple physics purposes, including the determination of the neutrino mass ordering through reactor neutrinos, as well as measuring supernova neutrinos, solar neutrinos, and atmosphere neutrinos to explore different physics topics. Efficient reconstruction algorithms are needed to...
The current ATLAS Inner Detector will be replaced with the new Inner Tracker (ITk) to cope with the increased track density and corresponding radiation levels at the HL-LHC. The ITk is designed to be an all-silicon tracking detector with a strip detector surrounding the inner pixel detector. The strip tracker will consist of a central barrel detector with four layers and two end-caps. The...
A Hermitian matrix can be parametrized by a set of variables consisting of its determinant and the eigenvalues of its sub-matrices. Along this line, correlations between these parameters and the physical mixing observables are investigated. The relations may be simplified by considering their symmetry properties. We establish a group of equations which connect these variables with the mixing...
The CMS experiment will undergo different upgrades in view of the HL-LHC phase of LHC. A key feature is the complete replacement of the Inner Tracker (IT), which will be equipped with detectors with improved radiation hardness, enhanced granularity, and the ability to manage higher data rates. A pioneering serial powering strategy will be deployed for biasing the pixel modules, accompanied by...
The determination of the detector efficiency is a critical ingredient in any physics measurement. It can be in general estimated using simulations, but simulations need to be calibrated with data. The tag-and-probe method provides a useful and elegant mechanism for extracting efficiencies directly from data. In this work, we present the tracking performance measured in data where the...
The minimum ionizing particles (MIPs) Timing Detector (MTD) will be installed during the Phase II Upgrade of the Compact Muon Solenoid (CMS) experiment at the CERN LHC. The MTD will provide time information for tracks with a time resolution of about 30-60 ps, helping manage the increased pileup level to preserve the CMS detector's reconstruction performance. The MTD's barrel part (BTL) is...
For the upgrade of the LHC to the High-Luminosity LHC, the ATLAS inner detector will be replaced with an all-silicon detector, the Inner Tracker (ITk). The innermost part of the ITk will consist of a pixel detector with five layers that will consist of modules combined into serially powered chains and loaded on ring and stave shaped low mass carbon-fiber local supports (LLS).
During 2024, the...
The Time-of-Flight (ToF) detectors in the ATLAS Forward Proton (AFP) system are used to measure the primary vertex z-position of the pp -> pXp processes using the arrival times of the two intact final state protons. Detection efficiencies and timing resolutions using low, and moderate pile-up data collected are presented. While efficiencies of a few percent are observed in the Run 2, the...
The new ATLAS Inner Tracker (ITk), consisting of pixel and microstrip detectors, will replace the current tracking system of the ATLAS detector to cope with the challenging conditions of the high luminosity LHC. System tests of the strip sub-detector are being developed which serve as a testbed for testing and evaluating the performance of several close-to-final detector components before...
To face the hightened requirements of real-time and precision bunch-by-bunch luminosity determination and beam-induced background monitoring at the High-Luminosity LHC, the CMS BRIL project constructs a stand-alone luminometer, the Fast Beam Condition Monitor (FBCM). It will be fully independent from the CMS central timing, trigger and data acquisition services and able to operate at all times...
Since 1983 the Italian groups collaborating with Fermilab have been running a 2-month summer training program for students in physics and engineering. Many students have extended their collaboration with Fermilab for their Master Thesis and PhD.
The program has involved more than 600 students from more than 20 universities. Each intern is supervised by a Fermilab Mentor. Training programs...
The Micro-Channel Plate (MCP) is a specially crafted microporous plate with millions of independent channels, which have secondary electron emission capability. The MCP could be used as the electronic multiplier amplifier in the PMTs. There are two types of MCP Photomultiplier tube (MCP-PMT). One is the large-area electrostatic focusing PMTs (LPMT) , which always used in the large scalar...
Next-generation neutrinoless double-beta decay searches seek to elucidate the Majorana nature of neutrinos and the existence of a lepton number violating process. The LEGEND-1000 experiment represents the ton-scale phase of the LEGEND program's search for neutrinoless double-beta decay of $^{76}$Ge, following the current intermediate-stage LEGEND-200 experiment at LNGS in Italy. The...
The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment under construction in China with the main goal of measuring the neutrino mass ordering from reactor antineutrinos. The Top Tracker constitutes part of the veto system of JUNO. Its main task is to track the muons crossing the Central Detector and evaluate the cosmogenic background contribution to the...
The MIP Timing Detector (MTD) of the CMS experiment, currently under construction for the High Luminosity phase of LHC, emerges as a key player in the pursuit of unrivaled temporal precision in particle physics.
The precise measurement of the time-of-arrival of charged particles provided by the MTD enables the implementation of a 4D vertex reconstruction and helps to discriminate...
The Fluorescence detector Array of Single-pixel Telescopes (FAST) project proposes a simplified Schmidt telescope designed for detection of ultra-high-energy cosmic rays. It maintains its optical excellence while featuring cost-effective components. The FAST prototype utilizes a segmented 1.6 m diameter mirror and four 200 mm photomultipliers at its focal plane. Currently, the first generation...
The NEXT collaboration uses a high-pressure gaseous time projection chamber with an electroluminescent amplification to search the neutrinoless double beta decay in Xe-136. The experimental program is built on solid and successful R&D, showing an excellent energy resolution (<1%) and remarkable topological discrimination. This prompts the tonne scale proposals for the technology in a phased...
We report on a novel application of computer vision techniques to extract beyond the Standard Model (BSM) parameters directly from high energy physics (HEP) flavor data. We develop a method of transforming angular and kinematic distributions into "quasi-images" that can be used to train a convolutional neural network to perform regression tasks, similar to fitting. This contrasts with the...
We report progress in using transformer models to generate particle theory Lagrangians. By treating Lagrangians as complex, rule-based constructs similar to linguistic expressions, we employ transformer architectures -proven in language processing tasks- to model and predict Lagrangians. A dedicated dataset, which includes the Standard Model and a variety of its extensions featuring various...
The High-Luminosity LHC will open an unprecedented window on the weak-scale nature of the universe, providing high-precision measurements of the Standard Model as well as searches for new physics beyond the standard model. The Compact Muon Solenoid (CMS) experiment is planning to replace entirely its trigger and data acquisition system to achieve this ambitious physics program. Efficiently...
In view of the HL-LHC, the Phase-2 CMS upgrade will replace the entire trigger and data acquisition system. The readout electronics will be upgraded to allow a maximum L1 accept rate of 750 kHz, and a latency of 12.5 µs. The muon trigger is a multi-layer system designed to reconstruct and measure the momenta of the muons by correlating information across muon chambers on the so-called muon...
The precision measurement of daily helium fluxes with AMS during twelve years of operation in the rigidity interval from 1.71 to 100 GV is presented. The helium flux and the helium to proton flux ratio exhibit variations on multiple timescales. In nearly all the time intervals from 2014 to 2018, we observed recurrent helium flux variations with a period of 27 days. Shorter periods of 9 days...
Cosmic Nitrogen, Sodium, and Aluminum nuclei are a combination of primaries, produced at cosmic-ray sources, and secondaries resulting from collisions of heavier primary cosmic rays with the interstellar medium. We present high statistics measurements of the N, Na and Al rigidity spectra. We discuss the properties and composition of their spectra and present a model-independent determination...
To cope with the large amount of data and high event rate expected from the planned High-Luminosity LHC (HL-LHC) upgrade, the ATLAS monitored drift tube (MDT) readout electronics will be replaced. In addition, the MDT detector will be used at the first-level trigger to improve the muon transverse momentum resolution and reduce the trigger rate. About 100 small-radius MDT chambers have been...
The use of generative deep learning models has been of interest in the high-energy physics community intending to develop a faster alternative to the compute-intensive Monte Carlo simulations. This work focuses on evaluating an ensemble of GANs on the task of electromagnetic calorimeter simulations. We demonstrate that the diversity of samples produced by a GAN model can be significantly...
The CMS upgrade for the High Luminosity phase of the LHC involves the installation of three GEM stations: GE1/1, GE2/1, and ME0. While GE1/1 has been operational since Run-3's onset, only two GE2/1 chambers are in place as of early 2024. ME0's installation is slated for LHC Long Shutdown 3, with GE2/1 chamber installation resuming post ME0 completion.
These GEM stations, coupled with...
The predicted neutrinoless double-β (0vββ) decay is the crucial phenomenon to prove the existence of the Majorana neutrino, which gives a foundation to the Fukugita-Yanagida theory explaining the matter prevalence of the universe. The nuclear matrix element (NME) of 0vββ decay is an important theoretical quantity for the detector design for the next generation of the 0vββ decay search....
