CHIPP 2024 Poster session

Contribution List

18. A deep learning method for the gamma-ray identification with the DAMPE space mission

Jennifer Maria Frieden (EPFL - Ecole Polytechnique Federale Lausanne (CH))

The Dark Matter Particle Explorer (DAMPE) is the largest calorimeter-based space-borne experiment. Since its launch in December 2015, DAMPE detects electrons, positrons and gamma rays from few GeV to 10 TeV, as well as protons and heavier nuclei from 10 GeV to 100 TeV. The study of galactic and extragalactic gamma-ray sources and diffuse emissions as well as the search for dark-matter...

19. A deep learning method for the trajectory reconstruction of gamma rays with the DAMPE space mission

Jennifer Maria Frieden (EPFL - Ecole Polytechnique Federale Lausanne (CH))

The Dark Matter Particle Explorer (DAMPE), a satellite-borne experiment capable of detecting gamma rays from few GeV to 10 TeV, studies the galactic and extragalactic gamma-ray sky and is at the forefront of the search for dark-matter spectral lines in the gamma-ray spectrum. In this contribution we detail the development of a convolutional neural network (CNN) model for the trajectory...

2. A novel range telescope concept for proton CT

Svetlana Karpova (Universite de Geneve (CH))

Proton beam therapy can potentially offer improved treatment for cancers of the head and neck and in pediatric patients. Proton therapy is a promising new type of cancer treatment, can be targeted more directly at the tumor and does less damage to other tissue. Treatments are currently planned using conventional X-ray CT images. It is happening due to the absence of devises able to perform...

7. Bayesian tuning of the Compact Muon Beam Line for the Mu3e experiment

Giovanni Dal Maso

Currently PSI delivers the most intense continuous muon beam in the world with up to few 10^8 μ+/s and aims at keeping its leadership upgrading its beamlines within the HIMB project to reach intensities up to 10^10 μ+/s, with a huge impact for low-energy, high-precision muon based searches.

The use of hyper parameter search algorithms has shown that not only the stringent rate requirements...

5. Convolutional Neural Network Approach for the Measurement of Non-Fiducial Electrons Cosmic-Rays Using the DAMPE Experiment.

Enzo Putti-Garcia (Universite de Geneve (CH))

The Dark Matter Particle Explorer (DAMPE) is a space-based cosmic-ray
observatory with the aim, among others, to study cosmic-ray electrons (CREs) up to 10 TeV. Due to the low CRE rate at multi-TeV, we increase the acceptance by selecting events outside of the fiducial volume. Non-fiducial events, with their complex topology, do however require special treatments with sophisticated analysis...

9. Fast identification of GW signals at the future Einstein Telescope

Noé Schärer, Sarah Baimukhametova (Universite de Geneve (CH))

The Einstein Telescope, the proposed next-generation European ground-based GW observatory, will dramatically increase our capability to detect GW signals. The number of detections is expected to grow from the current O(1/week) to O(1/minute), which will have a revolutionary impact on both our ability to study the dark universe and on multi-messenger science. In order to fully benefit from this...

11. Fibre Detector for the Mu3e Experiment

Benjamin Lustenberger (UniGe)

Mu3e is an experiment under construction at PSI in Villigen, Switzerland looking for the charged lepton flavor violating decay µ+->e+e+e-. The goal is to reach a sensitivity for a branching ratio of 10^ {-15}. To achieve this, the world highest intensity continuous surface muon beam is used, and an excellent background rejection is needed.

I will present the scintillating fiber detector,...

10. First evaluation of the jet energy resolution using pileup events with the ATLAS detector

Antti Pirttikoski (Universite de Geneve (CH))

For the first time, the R=0.4 jet energy resolution (JER) is evaluated using a dataset reconstructed from pileup events with the ATLAS detector. Traditionally, JER evaluated using the pT imbalance of dijet events is limited by the available statistics at low pT due to the increasingly prescaled jet triggers. An alternative approach is to utilize pileup events, which are recorded at the same...

16. Growing Evidence for a Higgs Triplet

Sumit Banik (University of Zurich & PSI)

Despite intensive searches at the LHC, no new fundamental particle has been discovered since the discovery of the 125 GeV Higgs boson. However, several recent LHC searches with multiple leptons in the final state point towards the existence of a new Higgs boson with a mass in the 140-160 GeV range, decaying mostly to a pair of W bosons. This dominant decay mode motivates a Higgs triplet with...

4. HLT b-tagging in ATLAS with transformer network for 2024 data-taking

Lucas Bezio (Universite de Geneve (CH))

Jets originating from b-quarks (b-jets) are produced at collider experiments in many interesting physics processes, making them a key signature to trigger events.

Trigger developments for the beginning of LHC Run 3 introduced fast b-tagging algorithms running in the early steps of High-Level Trigger (HLT) with partial reconstruction of the event, allowing to perform early background...

3. Human-in-the-loop Reinforcement Learning for Data Quality Monitoring in Particle Physics Experiments

Olivia Jullian Parra (CERN)

Data Quality Monitoring (DQM) is a crucial task in large particle physics experiments, since detector malfunctioning can compromise the data. DQM is currently performed by human shifters, which is costly and results in limited accuracy. In this work, we provide a proof-of-concept for applying human-in-the-loop Reinforcement Learning (RL) to automate the DQM process while adapting to operating...

17. Indirect search for dark matter in the gamma-ray flux with DAMPE

Jennifer Maria Frieden (EPFL - Ecole Polytechnique Federale Lausanne (CH))

Weakly interacting massive particles (WIMPs) are promising candidates for dark matter. Their annihilation or decay might result in almost monochromatic gamma rays, which the Dark Matter Particle Explorer (DAMPE) could identify over the Galaxy astrophysical gamma-ray emissions. In this contribution, the first steps of the analysis: the selection of the gamma-ray events with the DAMPE satellite...

8. Measurement of BR(Bs->KSKS) with Run 2 LHCb data

Kerim Guseinov (EPFL - Ecole Polytechnique Federale Lausanne (CH))

The decays $B^0_{(s)} \rightarrow K^0_SK^0_S$ proceed via flavor changing neutral currents that are suppressed in the Standard Model and therefore provide greater sensitivity to new physics. The latest measurements of their branching fractions exhibit some tension with the SM.

Since the time of the existing measurement, the LHCb experiment has collected a large amount of data and has had...

12. Measuring the boron-to-carbon flux ratio with the DArk Matter Particle Explorer

Andrea Serpolla (Universite de Geneve (CH))

The DArk Matter Particle Explorer (DAMPE) has been in operation since December 2015 and has been continuously detecting cosmic rays (CRs) for more than 8 years. With its large acceptance (0.3 m$^2$ sr) and deep calorimeter (32 $X_0$), DAMPE allows to measure proton amd heavy nuclei fluxes up to hundreds of TeV with an improved energy resolution and statistics.

CRs can be classified as...

23. MONOLITH

Matteo Milanesio (University of Geneva)

MONOLITH

13. MONOLITH - picosecond capability in a high granularity monolithic silicon pixel detector

Lorenzo Paolozzi (Universite de Geneve (CH))

The MONOLITH H2020 ERC Advanced project aims at producing a high-granularity monolithic silicon pixel detector with picosecond-level time stamping. To obtain such extreme timing the project exploits: i) a fast and low-noise SiGe BiCMOS electronics; ii) a novel sensor concept, the Picosecond Avalanche Detector (PicoAD), that uses a patented multi-PN junction to engineer the electric field and...

15. New Higgses at the Electroweak Scale

Guglielmo Coloretti (University of Zurich (UZH) / Paul Scherrer Institute (PSI))

Many LHC measurements with multi-lepton final states and missing energy, in particular top differential distributions, show strong tensions with the SM predictions. I discuss how they can be explained by new physics within the ∆2HDMS and show the correlations to the hints for narrow resonances at the electroweak scale.

22. Recent results from the NA62 experiment

Xiafei Chang (EPFL - Ecole Polytechnique Federale Lausanne (CH))

The NA62 experiment, located at CERN SPS, is designed to study the ultra-rare decay K+ --> pi+ nu nubar. It has collected the world larges charged koan decay sample with a decay in flight technique. In this poster, the result with the data set collected in Run 1 (2016-2018) is presented, which is the most accurate measurement achieved so far. Updates with Run 2 (2021 onwards) data set is discussed.

14. Search for Axion-Like Particles in Photonic Final States with the FASER Detector at the LHC

Noshin Tarannum (Universite de Geneve (CH))

FASER, an experiment at the LHC, aims to search for light, weakly interacting particles produced in proton-proton collisions at the ATLAS interaction point and travel in the far-forward direction. First search of detecting a light, long-lived particle decaying into photon pairs, using 2022 and 2023 collision data will be reported. Targeting axion-like particles (ALPs) primarily coupling to...

1. Searching beyond the Standard Model with n2EDM

Efrain Patrick Segarra

The next-generation neutron electron dipole moment (EDM) measurement is
currently ongoing at the Paul Scherrer Institute (PSI): the n2EDM experiment. n2EDM will deliver, at minimum, an order of magnitude better sensitivity as compared to current limits on the neutron EDM. This increased sensitivity on the neutron EDM will provide stringent constraints on time-reversal violating processes and...

20. The LUX ZEPLIN Experiment

Miguel Hernandez

The LUX-ZEPLIN (LZ) experiment is a 7 ton active mass dual-phase liquid xenon time projection chamber with the goal of making direct observation of Weakly Interacting Massive Particles interactions with standard matter. LZ
published first results of data taken from December 2021 to May 2022, finding it
consistent with background only, no WIMP hypothesis. Since first publishing,
LZ has...

6. The SuperFGD: a novel highly segmented neutrino detector for the T2K experiment

Lorenzo Giannessi (Universite de Geneve (CH))

T2K is a long baseline neutrino oscillation experiment with world-leading precision on the measurement of the CP violating phase $δ_{CP}$ in the lepton sector of the Standard Model. The T2K Near Detector is undergoing an hardware upgrade with the installation of 4 sub-detectors: two High-angle TPCs, a TOF detector, and the Super-FGD. Some of the remarkable advantages of the upgrade are larger...

21. Toward an improved measurement of the muon EDM

Diego Alejandro Sanz Becerra

We present the current status of the first phase of the muon EDM experiment, which aims to directly measure the electric dipole moment (EDM) of muons using the frozen-spin technique. A non-zero EDM value for muons would indicate an excess of CP violation beyond what the Standard Model predicts, potentially shedding light on the observed matter-antimatter asymmetry in the universe. The first...