IPA2022: Interplay between Particle and Astroparticle physics 2022

TU Wien

TU Wien

Karlsplatz 13, 1040 Wien
gianluca inguglia

!!! IMPORTANT information for all participants. Check this link for the latest COVID-19 regulations in Vienna and Austria!!!

There are several open questions in Physics today, each of which touches the fields of both Particle Physics and Astroparticle/Cosmology. For example, only 5% of the Universe is described by the Standard Model of particle physics. A far larger contribution comes from the elusive Dark Matter, which has been inferred from gravitational and astroparticle measurements. A large variety of models have been built by the theory community. Dark Matter is searched for in dedicated direct and indirect detection experiments but also in high-energy collisions at the LHC or in electron-positron collisions at Flavour Factories. Other subjects, such as the baryogenesis is still an open question related both to leptogenesis and CP violation and the matter content of today’s Universe. The knowledge of the neutrino sector has greatly increased over the past decades, but the question of the hierarchy is not yet solved and would need both accelerator/astroparticle and cosmological measurements to be fully understood. The physics of inflation, which will be better constrained in the coming years, would also need skills from both fields to be fully explored. Finally, anomalies in the quark and lepton sectors have been reported by many experiments and might be related to new physics emerging from precision measurements. Is a simple extension of the Standard Model sufficient or do we need more? In many fields the “single experiment” measurements have given way to more global views of our models: electroweak fits, exploring the parameter space of models beyond the Standard Model taking into account measurements and limits on new signatures.
The IPA2022 conference will bring together experimentalists and theorists to discuss the topics mentioned above with an emphasis on exchange between the different but correlated fields.
The timetable is indicative and not yet finalized.
The fees are 330 Euros (before June 26) and 375 Euros (starting June 26). Included are all coffee breaks, the welcome reception on Monday as well as the social program and the conference dinner on Wednesday. For accompanying persons the fee is 70 Euros and include the the welcome reception on Monday as well as the social program and the conference dinner on Wednesday.
Previous editions:


IPA 2022
Draft of the agenda now available

Special events

  • Seminar by NASA JWST systems engineer Begoña Vila, on Wednesday September 7th, 17:15
    "The James Webb Space Telescope, path to the first images: ground testing, on orbit commissioning and what happens next."
  • An exhibition of the Belle II virtual reality will take place daily during coffee breaks.


The IPA2022 conference is sponsored by:

    • 1
    • Astronomy, Astrophysics and Cosmology
      Convener: gianluca inguglia
    • 10:30 AM
      Coffee break
    • Astronomy, Astrophysics and Cosmology
      Convener: gianluca inguglia
    • 12:30 PM
    • Astronomy, Astrophysics and Cosmology
      Convener: Maura Graziani (Universita e INFN, Perugia (IT))
      • 9
        The IceCube experiment and possible upgrades
        Speaker: Chad Finley
      • 10
        The KM3NeT Neutrino Telescope - Status and outlook
        Speaker: Jutta Schnabel
      • 11
        Recent results from the Pierre Auger Observatory

        Ultra-high-energy cosmic rays (UHECRs) are mostly protons and heavier nuclei arriving on Earth from space and producing particle cascades in the atmosphere, ”extensive air showers”. As of today, the most precise and high-statistics data set of the rare (≤ 1 particle per square km per year above 10 EeV) UHECR events is obtained by the Pierre Auger Observatory, a large area (~3000 square km) hybrid detector in Argentina. The Auger Observatory determines the arrival directions and energies of the primary UHECR particles and provides constraints for their masses.

        In this talk, I will present and discuss the recent results, including the detailed measurements of the cosmic-ray energy spectrum features, the study of the anisotropies in the UHECR arrival directions at large and intermediate angular scales, the multi-messenger searches, and the inferred cosmic-ray mass composition. Finally, the progress of the current upgrade of the Observatory, "AugerPrime" which is aimed at improving the sensitivity to the mass composition of ultra-high-energy cosmic rays, will be presented.

        Speaker: Serguei Vorobiov
      • 12
        EHT observations of SMBHs
        Speaker: Michael Florian Wondrak (Radboud University Nijmegen)
    • 4:00 PM
      Coffee break
    • Astronomy, Astrophysics and Cosmology
      Convener: Maura Graziani (Universita e INFN, Perugia (IT))
      • 13
        Slow-roll inflation in Palatini $F(R)$ gravity

        We study single field slow-roll inflation in the presence of $F(R)$ gravity in the Palatini formulation. In contrast to metric $F(R)$, when rewritten in terms of an auxiliary field and moved to the Einstein frame, Palatini $F(R)$ does not develop a new dynamical degree of freedom. However, it is not possible to solve analytically the constraint equation of the auxiliary field for a general $F(R)$. We propose a method that allows us to circumvent this issue and compute the inflationary observables. We apply this method to test scenarios of the form $F(R) = R + \alpha R^n$ and find that, as in the previously known $n=2$ case, a large $\alpha$ suppresses the tensor-to-scalar ratio $r$.
        We also find that models with $F(R)$ increasing faster than $R^2$ for large $R$ suffer from numerous problems, with possible implications on the theoretically allowed UV behaviour of such Palatini models.

        Speaker: Antonio Racioppi (National Institute of Chemical Physics and Biophysics (EE))
      • 14
        Probing dark matter with neutron stars
        Speaker: Dr Violetta Sagun (University of Coimbra)
    • Social Program: Wlecome Reception
    • 15
    • Quark Flavour Physics
      Convener: Christoph Schwanda
      • 16
        B factory achievements, early Belle II results and outlook
        Speaker: Prof. Alan Schwartz (University of Cincinnati (US))
      • 17
        Significant LHCb results and plans for the future
        Speaker: Marcello Rotondo (INFN e Laboratori Nazionali di Frascati (IT))
      • 18
        The NA62 experiment: status and plans
        Speaker: Paolo Massarotti (Universita e INFN sezione di Napoli (IT))
    • 10:30 AM
      Coffee break
    • Quark Flavour Physics
      Convener: Christoph Schwanda
    • 12:45 PM
    • Quark Flavour Physics
      Convener: Petar Kevin Rados
      • 23
        TDCPV and charmless B decays at Belle II
        Speaker: Stefano Lacaprara (INFN sezione di Padova)
      • 24
        LHCb charm physics (including CPV)
        Speaker: Federico Lazzari (Universita di Siena & INFN Pisa (IT))
      • 25
        Early charm physics results from Belle II and prospects
        Speaker: Tadeas Bilka
      • 26
        CKM metrology
        Speaker: Marcella Bona (Queen Mary University of London (UK))
    • 4:00 PM
      Coffee break
    • Quark Flavour Physics
      Convener: Petar Kevin Rados
    • 31
    • Electroweak and High Energy Physics
      Convener: Petar Kevin Rados
    • 10:30 AM
      Coffee break
    • Electroweak and High Energy Physics
      Convener: Petar Kevin Rados
      • 35
        Status and physics potential of FCC-ee
        Speaker: Dr Valentin Volkl (CERN)
      • 36
        The Muon Collider Project
        Speaker: Daniel Schulte (CERN)
      • 37
        Deep neural networks resizing for online event selection in future collider experiments

        Deep Learning algorithms are widely employed at the LHC for event processing and have proven to be highly effective. Nonetheless, the massive volume of data generated at the LHC makes it difficult to keep existing trigger schemes up to date and retain data for offline analysis. It is therefore becoming vital to run algorithms with higher selection capability online, making use of low-latency technology with high parallelization while not exceeding the available memory. Future high-rate collider experiment trigger solutions will inevitably use FPGA implementations of Deep Neural Networks. Deep learning algorithm design is complicated by the sub-microsecond latency requirements of FPGA-based trigger and data acquisition systems. Resource optimization is particularly important since models must be compressed and reshaped suitably before being implemented on FPGAs. For this task, iterative sampling of the hyperparameter space or grid search are widely used, resulting frequently in sub-optimal and time-consuming solutions. Here we present a mathematically sound and quicker strategy for optimizing Neural Networks under latency and size limitations. Our method works by creating a shadow network on top of the one that has to be optimized. Throughout the training, the combined optimization of shadow and standard networks shows the optimal network structure for the considered task, as described by the loss function and available data. This approach selects relevant input features while pruning unnecessary nodes, resulting in a smaller network with user-defined dimensions. Our method is a new pruning methodology for Deep Neural Networks that shows to be useful in real-time inference applications for trigger purposes, picking the optimum network design from an infinite number of choices that are compatible with the FPGA resources available. Our pruning process can be used on the entire network or just a portion of it, it is easy to integrate into existing Deep Fully Connected Neural Network classifiers, and it allows for the selection of the best-performing Fully Connected Neural Network tagger. We will demonstrate how our method ensures equal-performance pruned networks and sensitive performance increases with newly found lightweight models.

        Speaker: Daniela Mascione (Universita degli Studi di Trento and INFN (IT))
    • 12:30 PM
    • Social Program: Vienna City Walk
    • 5:00 PM
      Coffee Break
    • Special Seminar: The James Webb Space Telescope
      Convener: gianluca inguglia
      • 38
        The James Webb Space Telescope, path to the first images: ground testing, on orbit commissioning and what happens next.
        Speaker: Dr Begoña Vila (NASA)
    • 39
      Conference photo
    • Social Program: Social Dinner
    • 40
    • Lepton Flavour Physics
      Convener: Petar Kevin Rados
    • 10:30 AM
      Coffee break
    • Lepton Flavour Physics
      Convener: Petar Kevin Rados
    • 12:30 PM
    • Lepton Flavour Physics
      Convener: Valentyna Mokina (HEPHY)
      • 47
        Results of the MAJORANA DEMONSTRATOR's search for neutrinoless double-beta decay in $^{76}$Ge

        The ${\rm M{\small AJORANA}~D{\small EMONSTRATOR}}$ is searching for neutrinoless double-beta decay ($0\nu\beta\beta$) in $^{76}$Ge, a process that would prove the neutrino is a Majorana fermion if discovered. The excellent energy resolution and ultra-low backgrounds also allow for searches for several classes of exotic dark matter. The experiment has completed operation of a modular array of 44 kg of high purity germanium detectors, in the p-type point contact (PPC), inverted-coaxial point-contact (ICPC), and broad energy germanium (BEGe) detector geometries.

        To minimize backgrounds, the ${\rm D{\small EMONSTRATOR}}$ is constructed from low-background materials and housed inside a compact shield consisting of lead and copper at the Sanford Underground Research Facility (SURF) in Lead, SD. Since the previous data release in 2019, ${\rm M{\small AJORANA}}$ has upgraded the electronic cables and connectors, improved its analysis routines, and successfully operated the ICPC detectors. The experiment has achieved a world leading energy resolution of 0.12% FWHM at 2039 keV.

        This talk will present the latest results on the search for neutrinoless double beta decay as well as searches for exotic dark matter from the ${\rm M{\small AJORANA}~D{\small EMONSTRATOR}}$ with its full exposure of 65 kg-yr from enriched detectors.

        This material is supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, the Particle Astrophysics and Nuclear Physics Programs of the National Science Foundation, and the Sanford Underground Research Facility.

        Speaker: David Tedeschi
      • 48
        Search for 76Ge 0νββ decay and beyond with the GERDA experiment

        Observing the neutrino-less double-beta (0$\nu\beta\beta$) decay would imply that neutrinos have a Majorana mass component and provide evidence of lepton number violation. The Germanium Detector Array (GERDA) experiment searched for 0$\nu\beta\beta$ of $^{76}$Ge operating enriched high purity germanium detectors in an instrumented Liquid Argon volume at Laboratori Nazionali del Gran Sasso (LNGS) in Italy. At the end of Phase II, with a total exposure of 127.2 kg$\cdot$yr, no 0$\nu\beta\beta$ decay signal was found, and the most stringent lower limit on the $^{76}$Ge 0$\nu\beta\beta$ decay half-life was set at 1.8$\cdot$10$^{26}$ yr at 90% C.L., coinciding with the median sensitivity for the null hypothesis.
        The ultra-low background and excellent understanding of the experiment’s response achieved in GERDA Phase II also allowed a measurement of the Standard Model 2$\nu\beta\beta$ decay half-life of $^{76}$Ge with unprecedented precision. It provides essential inputs for nuclear structure calculations that benefit the interpretation of 0$\nu\beta\beta$ decay results. Furthermore, the search for distortions of the 2$\nu\beta\beta$ decay spectrum allows exploring new physics, like 0$\nu\beta\beta$ decay with Majoron emission, Lorentz invariance, or search for sterile neutrinos.
        This talk will cover the final result of GERDA on the search for $^{76}$Ge 0$\nu\beta\beta$ decay, as well as new results on the $^{76}$Ge 2$\nu\beta\beta$ decay half-life and limits on exotic decay modes.

        Speaker: Elisabetta Bossio
      • 49
        Latest results from the CUORE experiment
        Speaker: Stefano Pozzi
      • 50
        The LEGEND experiment
        Speaker: Giuseppe Salamanna (Roma Tre Universita Degli Studi (IT))
      • 51
        Coherent neutrino scattering
        Speaker: Victoria Wagner (Technical University Munich)
      • 52
        The DUNE experiment
        Speaker: Prof. Jianming Bian (University of California Irvine (US))
    • 4:00 PM
      Coffee break
    • Lepton Flavour Physics
      Convener: Valentyna Mokina (HEPHY)
      • 53
        Oscillation research with KM3NeT/ORCA

        ORCA is the low energy neutrino detector of the KM3NeT experiment, designed for the detection of GeV atmospheric neutrinos. It is currently under construction in the French Mediterranean Sea at a depth of 2450m. The main goal is the study of neutrino oscillations in order to further constrain mixing parameters and eventually determine the neutrino mass ordering (NMO).
        This talk will give an overview about the latest sensitivity studies concerning low energy neutrino physics as well as on-going analyses of current data.

        The full ORCA detector will consist of 115 detection units (DU) for measuring the Cherenkov light induced by particle showers triggered by neutrino interactions in the sea water.
        Recent publications report its capability to resolve the NMO within 5 years of data-taking - potentially earlier by combining ORCA + JUNO data, measurement of $\nu_\tau$-appearance and its sensitivity to light sterile neutrino mixing parameters.
        Since January 2020, six ORCA detection units have been taking data. First analyses of data acquired with approximately one year of the ORCA sub-array already show clear evidence of neutrino oscillation. Current analyses of the latest data and the expected deployment of up to 12 additional strings by the end of 2022 will further increase the reported sensitivities.

        Speaker: Mr Lukas Maderer (APC)
      • 54
        Recent Results of MicroBooNe Experiment
        Speaker: Dr Jaroslaw Andrzej Nowak (Lancaster University (GB))
      • 55
        Status and Plans of T2K
        Speaker: Dr S Mohan Lakshmi (National Centre for Nuclear Research, Warsaw)
      • 56
        (g-2) and neutrino masses

        Motivated by the experimentally observed deviations from the standard model predictions, we try to link the generation of light neutrino masses to the anomalous magnetic moment of the muon. We discuss two models in detail that can explain both observables at a relative low energy scale. First, we introduce a variant of the neutrino mass model originally proposed by Babu-Nandi-Tavartkiladze (BNT). Here we found that the heavy fermions of the model can be produced at the HL-LHC and, in the part of parameter space where the model explains the experimental anomalies, it predicts certain specific decay patterns for the exotic fermions. Later we discuss a variant of the Scotogenic model, where a low energy leptogenesis can be accommodated along with a viable dark matter candidate.

        Speaker: Ricardo Cepedello
    • 57
    • Dark Sector(s) I
      Convener: Gianluca Inguglia (Austrian Academy of Sciences (AT))
      • 58
        Dark sector and long-lived particles
        Speaker: Susanne Westhoff
      • 59
        Searches for very long lived particles at the LHC
        Speaker: Cristiano Alpigiani (University of Washington, Seattle)
      • 60
        Dark sector searches at NA64(-muon)
        Speakers: Laura Molina Bueno (Univ. of Valencia and CSIC (ES)), Laura Molina Bueno (Universidad de Granada)
    • 10:30 AM
      Coffee break
    • Dark Sector(s) I
      Convener: Valentyna Mokina (HEPHY)
      • 61
        LDMX: The Light Dark Matter eXperiment

        The constituents of dark matter are still unknown, and the viable possibilities span a very large mass range. The scenario where dark matter originates from thermal contact with familiar matter in the early Universe requires the DM mass to lie within about an MeV to 100 TeV. Considerable experimental attention has been given to exploring Weakly Interacting Massive Particles in the upper end of this range (few GeV – ~TeV), while the region ~MeV to ~GeV is largely unexplored. Most of the stable constituents of known matter have masses in this lower range, tantalizing hints for physics beyond the Standard Model have been found here, and a thermal origin for dark matter works in a simple and predictive manner in this mass range as well. It is therefore a priority to explore. If there is an interaction between light DM and ordinary matter, as there must be in the case of a thermal origin, then there necessarily is a production mechanism in accelerator-based experiments. The most sensitive way, (if the interaction is not electron-phobic) to search for this production is to use a primary electron beam to produce DM in fixed-target collisions. The Light Dark Matter eXperiment (LDMX) is a planned electron-beam fixed-target missing-momentum experiment that has unique sensitivity to light DM in the sub-GeV range. This contribution will give an overview of the theoretical motivation, the main experimental challenges and how they are addressed, as well as projected sensitivities in comparison to other experiments.

        Speaker: E. Craig Dukes (University of Virginia)
      • 62
        Direct Dark Matter Searches
        Speakers: Chamkaur Ghag (University of Edinburgh), Chamkaur Ghag (University College London)
      • 63
        Status of the LUX-ZEPLIN (LZ) Experiment’s Search for WIMP Dark Matter

        The LUX-ZEPLIN (LZ) experiment is actively collecting physics data in the search for WIMP dark matter and other novel physics interactions nearly a mile underground at the Sanford Underground Research Facility. LZ presents an unprecedented sensitivity for discovering WIMP-nucleon interactions by employing a 7-tonne liquid xenon time-projection chamber surrounded by a three-component veto system: a liquid-xenon skin, a nearly-hermetic Gd-loaded liquid scintillator, and an instrumented, ultra-pure water tank. In this talk, I will present the status of the LZ experiment and its search for WIMP dark matter and other new physics phenomena.

        Speaker: Scott Haselschwardt
      • 64
        Search for dark matter with XENONnT

        XENONnT is a dual-phase time projection chamber with 5.9 tons of liquid Xenon (LXe) at INFN Gran Sasso National Laboratory (Italy) which aims at the direct detection of dark matter particles. XENONnT features a larger target mass with respect to previous detectors of the XENON project and it also benefits of some key upgrades which improve its sensitivity: a LXe purification system, a dedicated distillation column for Radon removal and a neutron veto to identify neutrons from detector material. XENONnT has started to collect science data and the analysis is ongoing. An update on the status of the project will be presented.

        Speaker: Andrea Molinario
    • 12:30 PM
    • Dark Sector(s) I
      Convener: Valentyna Mokina (HEPHY)
      • 65
        The CYGNO experiment
        Speaker: Francesco Renga (INFN Roma)
      • 66
        Annual Modulation investigation with DAMA/LIBRA
        Speaker: Dr Riccardo Cerulli
      • 67
        COSINUS – Search for dark matter with cryogenic NaI detectors

        Dark matter is one of the largest unsolved mysteries in particle-astrophysics. Its existence is evident through the gravitational impact it has on astronomical observations and it makes up 26% of the mass-energy content of the universe. Over the past twenty-five years the DAMA/LIBRA (formerly DAMA/NaI) experiment has observed an annual modulation signal that is consistent with a dark matter explanation, but, in a standard halo scenario, the signal is contradicted by the null-results of numerous experiments that utilize different target materials. In order to perform a truly model-independent investigation of the DAMA/LIBRA result an experiment with the same target material is required. The COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches) experiment will use NaI crystals operated as cryogenic scintillating calorimeters to cross-check the DAMA/LIBRA result. These detectors will be cooled to milli-Kelvin temperatures and provide a measurement of both the phonon and scintillation light signal caused by particle interactions. This is the first cryogenic measurement of NaI detectors for a dark matter search and the dual channel capability will allow particle discrimination between electron and nuclear recoils on an event-by-event basis. In this talk we will present the current status of the experimental setup, which is currently ongoing at the Gran Sasso underground laboratories in Italy. Furthermore, we detail the recent results from the new “remoTES” detector prototype and the simulations for an active water Cherenkov muon veto.

        Speaker: Matthew Jake Stukel (Gran Sasso Science Institute)
      • 68
        Probing μτ flavor-violating solutions for the muon g−2 anomaly at Belle II
        Speaker: Iguro Syuhei
      • 69
        Milli-eV axion and dark photon experiments with millimeter-wave resonators
        Speaker: Akira Miyazaki (Uppsala University (SE))
      • 70
        The FASER experiment
        Speaker: Monica D'Onofrio (University of Liverpool (GB))
    • 4:00 PM
      Coffee break
    • Dark Sector(s) I
      Convener: Gianluca Inguglia (Austrian Academy of Sciences (AT))