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Bruna Osorio Pascual (Laboratoire de Physique Clermont-Auvergne (LPCA))23/11/2026 09:25
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Mlle Hind Taibi23/11/2026 09:55Standard Model
The discovery of the Higgs boson at the LHC was followed by a broad research programme aimed at measuring its properties and comparing them with theoretical predictions. Among these, the Higgs boson self-coupling is of particular interest. The ATLAS experiment aims to measure it by searching for Higgs boson pair ($HH$) production in the Run 2 and Run 3 LHC datasets, and one of the most...
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M. Tom FOURNIER (APC Paris CNRS/IN2P3)23/11/2026 10:50Standard Model
The Future Circular Collider (FCC) is the proposed next-generation collider at CERN to succeed HL-LHC. Its first stage, FCC-ee, would operate as a high-luminosity $e^+e^-$ collider a several centre-of-mass energies ($\sqrt{s}$), providing exceptionally clean conditions for precision studies of the Higgs boson, electroweak interactions, QCD, flavor Physics and to test the Standard Model.
The...
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Nicolas Cartalade23/11/2026 11:15
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Omar ISTAITIA (IJCLab)23/11/2026 11:40Standard Model
Boosted-object taggers use the internal substructure of large-R jets to identify whether a jet comes from a hadronically decaying W, Z ,H bosons or top quark.Tggers (ANN/DisCoJet, DNN) were already used in Run-2 physics analyses, and new-generation taggers based on Transformer like ParT tagger have been developed since Run-2 . With the new ATLAS software release for Run 3, the existing...
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William Roth (LPNHE)23/11/2026 12:05Standard Model
The top-quark mass is one of the key fundamental parameters of the Standard Model of particle physics that must be determined experimentally. Its value has an important effect on many precision measurements and tests of the Standard Model. The ATLAS experiment collects proton-proton collisions at CERN’s Large Hadron Collider (LHC). In this contribution, I will concentrate on a specific...
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23/11/2026 14:00
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Mlle Eléa Paquis (LPSC-Grenoble CNRS/IN2P3)23/11/2026 15:00Standard Model
A search for non-resonant Higgs boson pair production ($HH$) in the $b\bar{b}\tau^{+}\tau^{-}$ final state is presented using the full Run 2 ($140 \text{ fb}^{-1}$ at $\sqrt{s}=13\text{ TeV}$) and partial Run 3 ($56 \text{ fb}^{-1}$ at $\sqrt{s}=13.6\text{ TeV}$) proton-proton collision recorded by the ATLAS detector at the CERN Large Hadron Collider between 2015 and 2023. The signal searched...
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Vincenzo Triglione (CPPM, Aix-Marseille Université, CNRS/IN2P3 (FR))23/11/2026 15:25Standard Model
The High-Luminosity Large Hadron Collider (HL-LHC) will open new opportunities for the study of rare processes, including Higgs boson pair (di-Higgs) production. Flavour tagging will play a central role in enabling these measurements. This talk presents the expected challenges for flavour tagging in the HL-LHC environment, characterized by unprecedented instantaneous luminosity, high pile-up...
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Giorgio Mauceri23/11/2026 15:50
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Quentin Bonnefoy (Uni. de Strasbourg & IPHC)23/11/2026 16:45
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BASILE DEMAIRE-LEPAPE23/11/2026 17:15Theory
During the gravitational collapse of a massive star, the proto-neutron-star core reaches extreme densities and temperatures, providing an environment in which QCD axions can be efficiently produced through their interactions with baryonic matter. Axion emission may contribute significantly to the cooling of the newly formed neutron star, and observations of supernova cooling, in particular...
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Margherita Scuderi (Laboratoire de physique théorique et hautes énergies (LPTHE), Sorbonne université)23/11/2026 17:40Theory
Recent results from Galactic surveys, such as Gaia, and from hydrodynamical cold dark matter simulations of Milky Way-like galaxies have shown that the galactic dark matter halo likely deviates from spherical symmetry. Its shape and orientation may constitute an additional significant source of uncertainty for indirect dark matter searches. In this work we develop a fast and light...
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Baraa Yahya (IPhT (CEA-SACLAY))23/11/2026 18:05Theory
The piezoaxionic effect enables the conversion of axion-induced spin-dependent forces in polarized nuclei into measurable voltages in piezoelectric crystals. We propose a heterodyne detection scheme in which controlled nuclear spin precession mixes the axion oscillation frequency with the nuclear Larmor frequency. This generates sideband signals at shifted frequencies, allowing efficient...
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Daniel Kerszberg (LPNHE, CNRS/IN2P3)24/11/2026 09:00
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Lukas Arda (APC Paris)24/11/2026 09:30Astroparticle
The massive black hole at the centre of the Milky Way (MW), Sgr A*, has a precisely known sky position and is only $\sim 8$ kpc away. This makes it a unique source of extreme-mass-ratio gravitational-wave (GW) signals that would be too faint to detect from extragalactic sources. We study the full range of such events, from extreme-mass-ratio inspirals (EMRIs) and bursts to direct plunges,...
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David Fernando Freitas da Silva Cavalcante (APC (Université Paris Cité))24/11/2026 09:55Astroparticle
Dark matter (DM) particle interactions with detector targets are expected to be extremely rare, posing a major challenge for direct detection experiments. To maximize their sensitivity to potential DM signals, these experiments require highly efficient background rejection. This is typically accomplished through a combination of passive and active veto systems and offline techniques...
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Justin Albinet24/11/2026 10:50Astroparticle
Seyfert galaxies are a subclass of active galactic nuclei (AGN). They have emerged in recent years as potential cosmic-ray accelerators. In 2022, the IceCube collaborations revealed a very-high-energy neutrino excess coming from several Seyfert galaxies. Close-by sources like NGC 1068 and NGC 4151 present especially bright neutrinos hotspots and are thus very promising objects to better...
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titouan girault (IRFU, CEA Paris-Saclay, Université Paris-Saclay)24/11/2026 11:15Astroparticle
Dwarf galaxies are considered to be dark-matter-dominated systems, as indicated by multiple lines of evidence, most notably the analysis of their kinematics. This large dark matter content, combined with the absence of strong astrophysical emission, makes them prime targets in the search for gamma rays from the annihilation or decay of WIMP dark matter, and thus for testing and constraining...
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Manuel Pronesti (CPPM, Aix-Marseille Université, CNRS/IN2P3)24/11/2026 11:40Astroparticle
The existence of dark matter is firmly established by astrophysical and cosmological observations, yet its particle nature remains one of the most compelling open questions in physics. Among the proposed candidates, Weakly Interacting Massive Particles (WIMPs) are particularly well motivated by the so-called “WIMP miracle”: a weakly interacting, stable particle with electroweak-scale mass...
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Pierre Geneste (CEA-IRFU-DPhP)24/11/2026 12:05Astroparticle
Variability in gamma-ray emission provides a powerful probe of accretion and jet dynamics in active galactic nuclei. In the context of my PhD research on variability at very high energies, I investigate periodic and quasi-periodic signals as potential signatures of supermassive black hole binaries (SMBHBs). Identifying period changes would help identifying candidates to future SMBH mergers....
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Ugo LAINÉ (Subatech-KM3NeT), Ugo Lainé (Subatech-KM3NeT)24/11/2026 14:00Astroparticle
The KM3NeT experiment is a next-generation neutrino telescope and particle physics detector located in the depths of the Mediterranean Sea, aiming at detecting neutrino interactions through Cherenkov light produced by the resulting leading lepton in different energy ranges. Its detectors provide opportunities to investigate potential neutrino emission from astrophysical sources and improve our...
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Mulan Ahmed (IJCLap)24/11/2026 14:25Astroparticle
The Pierre Auger Observatory, covering an area of $3000~\mathrm{km}^2$ in Argentina, is the world's largest cosmic-ray observatory. It studies ultra-high-energy cosmic rays, charged particles originating from outer space that can reach energies exceeding $10^{20}~$eV, far beyond those achievable by human-made particle accelerators. The astrophysical sources capable of accelerating particles to...
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Lina BRETON--ZAOURAT (LAPP-CNRS)24/11/2026 14:50Astroparticle
Understanding quantum gravity remains one of the most challenging frontiers in modern physics. Thanks to new generations of Imaging Atmospheric Cherenkov Telescopes (IACTs) such as CTAO, we can now explore increasingly higher energies, accessing experimental observables that directly arise from quantum gravity theories. Lorentz Invariance Violation (LIV) is one such observable, and it can be...
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Tommaso Fulghesu (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)24/11/2026 15:15
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Valério Di Bella (IPHC)24/11/2026 15:45Flavor Physics
La production de mésons D dans des collisions protons protons (pp) permet de tester les calculs de chromodynamique quantique perturbative (pQCD).
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Notamment, l'étude de la production de paires de mésons D chargés dans une même collision permet d'obtenir des informations sur les diffusions partoniques simples (SPS) et doubles (DPS), car des paires de mésons de même signe sont produites quasi... -
Fatemeh NOURI (IJCLab)24/11/2026 16:40Flavor Physics
We implement a recently proposed parametrization of the pion vector form factor and apply it to $\tau^-\to\pi^-\pi^0\nu_\tau$ data. Constrained by analyticity and unitarity, this parametrization provides access to both the physical and second Riemann sheets, allowing us to extract the $\rho$ resonance pole parameters and low-energy $\pi\pi$ scattering parameters without external scattering...
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Emile Lavaut (IPHC CNRS)24/11/2026 17:05
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Gaby BRENOT24/11/2026 17:35Neutrino physics
Coherent Elastic Neutrino-Nucleus Scattering (CEνNS) is a Standard Model
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process in which a neutrino scatters off a nucleus as a whole, producing a very
low-energy nuclear recoil. First observed with accelerator neutinos, it is a sensitive
probe of the wek mixing angla at low momentum transfer and of physics beyond
the Standard Model. Its detection with reactor antineutrinos remains... -
Mathis Roinsard (Subatech)25/11/2026 09:00Neutrino physics
Neutrinos are among the most abundant particles in the Universe, yet remain some of the least understood. We discovered only recently they have mass, thanks to a phenomenon called “neutrino oscillation”. Neutrinos can exist in different states, called flavors, and each flavor is a combination of different three mass states. One open question concerns the ordering of these mass states. The...
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Dario Pullia (APC, CERN)25/11/2026 09:25Neutrino physics
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline oscillation experiment, aiming to address fundamental questions about neutrino oscillations, CP violation, and the origin of matter–antimatter asymmetry. At CERN, the ProtoDUNE detectors play a crucial role in preparing for the DUNE far detector construction and operation through extensive testing of detector...
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Jonas Buchholz (Université de Bordeaux)25/11/2026 09:50Neutrino physics
The JUNO experiment is a 20 kton liquid scintillator detector, designed primarily to determine the neutrino mass ordering within the next few years. Its large size also makes it well suited to detect neutrinos from the next galactic core-collapse supernova (CCSN). Such an event would be a unique opportunity to understand the mechanisms behind CCSNe, which are not yet fully understood. The only...
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Benjamin Carew, Benjamin Carew (LPNHE)25/11/2026 10:45Neutrino physics
Hyper-Kamiokande is currently an empty cavern, the largest ever excavated, and will be slowly filled with electronics, photomultiplier tubes and water over the next two years as it is transformed into a gigantic Cherenkov neutrino detector. Paired with the upgraded J-PARC neutrino beam on Japan's opposite coast 300km away, Hyper-K will collect unprecedented statistics, with the primary aim of...
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Matteo Loup (APC)25/11/2026 11:10Neutrino physics
Since the first measurement of neutrino oscillations in 1998, several fundamental questions regarding the nature of neutrinos remain unanswered. Among them is the neutrino mass ordering, which many experiments are currently trying to determine. One such experiment is KM3NeT, a neutrino telescope located at the bottom of the Mediterranean Sea. It is composed of multiple lines equipped with...
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Anna Niemiec (LPSC)25/11/2026 11:35
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Urwa Shoaib25/11/2026 12:05Cosmology
Galaxy clustering allows the study of galaxy distribution across the Universe, revealing critical insights into the structure of the Universe, its dynamics and the nature of dark energy. On the other hand, weak lensing enables the inference of dark matter distribution by analyzing the deformation of background galaxies by foreground masses.
The 3x2pt method, which combines galaxy...
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25/11/2026 13:45
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Victor Chalamet (LPSC)26/11/2026 09:00Cosmology
Galaxy cluster are the most massive gravitationally bound structures in the Universe, thus, they are of great cosmological interest. Indeed, their mass and redshift distribution can be used to constrain cosmological parameters.
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In order to study clusters we can use the thermal Sunyaev-Zel'dovich (tSZ) effect that is produced by the inverse Compton interaction of CMB photons with the hot gas... -
M. Laurent MAGRI-STELLA (LAPP)26/11/2026 09:25Cosmology
Are the standard approximations used in gravitational lensing still adequate in the era of precision cosmology? If not, how can we move beyond them?
As cosmological tensions sharpen, a new generation of surveys such as Euclid and LSST is set to deliver an unprecedented volume of data, with billions of galaxies analyzed through increasingly sophisticated pipelines, including machine-learning...
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Théotime Hallouin (LPCA/CNRS)26/11/2026 09:50Cosmology
The existence of dark matter has been established through its gravitational influence on visible matter and light. Although it constitutes a major component of our Universe, its nature remains mysterious, with several conflicting models being plausible. While the power spectrum of matter on cosmological scales is well-constrained beyond the galactic scale, most observational methods struggle...
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Maxime Bloch (Subatech (UMR 6457))26/11/2026 10:45Cosmology
Gravitational waves were predicted in 1916 by Albert Einstein through his theory of general relativity. A century later, on 14 September 2015, the first signal was detected by the LIGO-Virgo Collaboration through interferometric measurements of spacetime distortions produced by the coalescence of two compact objects$^{[1]}$.
This new observational window on the Universe has opened the door...
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Eva Elkhoury (Qubic), Eva Elkhoury (APC)26/11/2026 11:10
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Dr Antonio Uras (IP2I Lyon)26/11/2026 11:35
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Emma Weiler26/11/2026 12:05Hadronic Physics
The High Acceptance DiElectron Spectrometer (HADES) in Darmstadt Germany is a fixed target experiment used to study elementary and heavy-ion collisions of a few GeV per nucleon. HADES explores the microscopic characteristics of baryon dominated matter as well as its observables sensitive to the equation of state in the moderate temperature (~70 MeV) and large net baryon density region.
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In... -
26/11/2026 14:00
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Sacha MEHAT (IJCLAB)26/11/2026 15:00Hadronic Physics
Heavy-ion collisions create, for a short time (about 10 fm/c), an extremely hot and dense medium of strongly interacting matter and thus are a unique laboratory for studying the properties of nuclear matter and mapping the QCD phase diagram. At the SIS18 accelerator at GSI, Darmstadt, beam energies of 1–2 GeV per nucleon produce matter at moderate temperature ( below 70 MeV ) and net-baryon...
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Rachel Delorme (LPSC, Grenoble)26/11/2026 15:25
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Violette GUITTET26/11/2026 15:55Interdisciplinary
In recent decades, renewed interest in Moon and Mars exploration has led the space research community to organize its activities around one objective: bringing humans to Mars and the Moon (ESA and Spaceship projects - Navarro, 2024). This goal highlights challenges such as the radioprotection of astronauts exposed to an interplanetary environment, where the magnetosphere provides less...
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Louis Hardouin26/11/2026 16:55Interdisciplinary
Cancer is a major public health issue, and radiotherapy is involved in the treatment in more of 50 % cases. It relies on the use of ionising radiation to damage, directly or indirectly the DNA of tumor cells. Conventional radiotherapy primarily uses photons and electrons, whose energy deposition extends along their path through the tissues. In contrast, ion beams allow for the concentration of...
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Angela Burger (L2I Toulouse, CNRS/IN2P3, Université de Toulouse)26/11/2026 17:20
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Xavier MADRE (IPHC)26/11/2026 17:50Beyond Standard Model
The Standard Model of particle physics is, at present, the most accurate and complete framework we have to describe the fundamental interactions of our universe. However, various phenomena observed experimentally remain unexplained by this model. It is in this context that new theoretical models have been developed to extend the Standard Model; some of these models predict the existence of...
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Anaïs LEPINE27/11/2026 10:45Nuclear Physics
Author: Ana¨ıs L´epine, LP2iB, on behalf of the WISArD collaboration
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The Standard Model (SM) of particle physics has proven to be a successful
theory describing three of the four fundamental interactions. However, some
open questions remain and motivate precise measurements to search for evidence
of physics beyond the SM predictions. Nuclear β-decay provides a sensitive
probe of the weak... -
Melvyn Putra Wirawan27/11/2026 11:10Beyond Standard Model
Searches for dark sector signatures such as emerging jets call for anomaly detection methods that do not rely on a specific signal model. DarkCLR is a self-supervised contrastive learning approach for track-level jet constituents, initially built for semi-visible jet searches. This study will extend its capability to a wider range of anomalous jet signatures arising from different underlying...
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Marion Missio (Université Clermont Auvergne)27/11/2026 11:35
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Augustin DEMAGNY27/11/2026 12:05Instrumentation
Black hole and neutron star are massive objects which, when in a binary system, generate gravitational wave. These waves can be used to measure the local expansion of the universe, measure the star population, for multi-messenger astronomy, and a lot of other fields.
The Virgo interferometer, at Pisa, is a second generation gravitational wave detector, which can detect these phenomenon. For...
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Chun-Ting Kuan27/11/2026 14:00Instrumentation
The Relativistic Heavy Ion Collider (RHIC) will be revamped as the Electron-Ion Collider (EIC), and the STAR detector will be replaced by the ePIC detector. We are developing backward electromagnetic calorimeters (ECal) to meet the energy-resolution requirements listed in the EIC Yellow Report. The energy resolution of the backward ECal prototype was measured during a beam test at the...
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Veronica CAZZOLA (LPNHE)27/11/2026 14:25Instrumentation
Liquid Xenon Time Projection Chambers (LXe-TPCs) represent a leading technology in the direct search for WIMP dark matter and rare event physics. Achieving high sensitivity requires precise control over the electric field, signal extraction, and light collection within the active volume. This talk presents recent advancements in electric field modeling for the XENONnT experiment,...
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Amélie CLÉMENT (LP2IB)27/11/2026 14:50Instrumentation
Gamma-ray Astrophysics focuses on the origin of Cosmic Rays in our Universe. These are high energy charged particles and nuclei which are accelerated and deviated by shocked media and high magnetic fields. Through violent and non-thermal processes, they lead to high-energy photon production, from Giga-electron-volts (GeV) and beyond. These gamma rays, when emitted in our direction, can be...
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Anas Basheer (anas.basheer@univ-lille.fr)27/11/2026 15:15Instrumentation
Terahertz (THz) acceleration is a promising approach toward compact electron accelerators, combining high accelerating fields with structures significantly smaller than conventional radiofrequency systems. Within the TWAC (Terahertz Wave Accelerating Cavity) Project , my PhD focuses on the modelling and characterization of the dielectric-lined accelerating waveguide “ZITA”.
The structure is...
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Mariya Mollova (APC-Paris)27/11/2026 15:40Instrumentation
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino experiment designed to address fundamental open questions in neutrino physics. DUNE will study neutrino oscillations using a beam produced at Fermilab, with a Near Detector to characterise the beam and a Far Detector comprising four modules located 1,300 km away in South Dakota. One of these modules...
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Ewan Heeder (CEA Paris-Saclay)27/11/2026 16:35Instrumentation
The High-Luminosity phase of the Large Hadron Collider (HL-LHC), is expected to start in 2030. It will bring around a 2.5-to-4-fold increase in instantaneous luminosity, raising pileup up to 200 collisions per bunch crossing and increasing radiation damage to the detectors. To cope with this pileup and replace aging components, several subdetectors of the major experiments must be upgraded...
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