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19/10/2026 14:00
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Dr Joshua Green (University College London)19/10/2026 14:20Dark Universe
The LUX-ZEPLIN experiment is a liquid-gas dual phase time projection chamber primarily searching for dark matter in the form of weakly interacting massive particles (WIMPs). It has been collecting science data with a 7-tonne active xenon target near-continuously since 2021. LZ has reported world-leading WIMP dark matter searches, a measurement of coherent solar $^8$B neutrino scattering on...
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MATTIA DI MAURO (INFN TORINO)19/10/2026 14:55Dark Universe
The recent high-energy recoil event reported by LUX-ZEPLIN has motivated a broad range of dark-matter interpretations. In this talk I will review the main theoretical scenarios that have been proposed, including thermal Higgsino and minimal electroweak dark matter, pseudo-Dirac models, endothermic and exothermic dark matter, and elastic momentum-dependent interactions.
I will focus in...
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cervane grimaud (IRFU / CEA Paris-Saclay)19/10/2026 16:05Dark Universe
Axion-Like Particles (ALPs) are well-motivated candidates for light dark matter and may couple with photons in the presence of astrophysical magnetic fields which give rise to the possibility of photon-ALP oscillations. If sufficiently strong, this mixing can induce characteristic energy-dependent feature in gamma-ray spectrum of astrophysical sources.
In this work, we explore the...
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Ana Foguel (University of Bologna)19/10/2026 16:30Dark Universe
The Standard Model (SM) of particle physics remains an incomplete theory, with the nature of dark matter (DM) among its major open questions. Guided by symmetry and simplicity, a new dark sector can communicate with the SM through three renormalizable portals: vector, scalar and neutrino. In particular, the vector portal is among the minimal realizations, with the standard dark photon as its...
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Thomas REGGIO (LPCA)19/10/2026 16:55Dark Universe
The Inert Doublet Model (IDM) is one of the most studied models of frozen-out WIMP dark matter. In this talk we will see that, depending on the thermal history of the universe, the IDM dark matter candidate can effectively behave as a FIMP despite being charged under the electroweak gauge group. We will discuss the DM abundance predicted by the IDM under different cosmological assumptions and...
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19/10/2026 18:00
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Arno Goudeau (LPTHE, Sorbonne University)20/10/2026 09:30
We construct an explicit anomaly-free completion of a gauged baryon-number symmetry. The new gauge factor is $U(1)_{\tilde{B}}$: when restricted to the Standard Model fields its charge $\tilde{B}$ coincides with ordinary baryon number, whereas in the full theory it becomes an extended baryonic symmetry acting on both the Standard Model and a secluded sector. We show that anomaly cancellation...
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Mohammed Khojali (IP2I - Université Lyon 1)20/10/2026 09:55
In this talk, we extend the electroweak gauge group of the Standard Model by introducing extra gauge factors, $SU(2)_{L}\times SU(2)_{H} \times U(1)_{1} \times U(1)_{2}$. We analyze theoretical consistency, Higgs constraints, electroweak precision tests, and dark matter direct detection bounds. Our results show that the model can accommodate viable dark matter scenarios while remaining...
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Emanuelle Pinsard20/10/2026 10:20
Heavy neutral leptons offer a promising avenue to explore neutrino mass generation and physics beyond the Standard Model. In this talk, I will discuss their discovery prospects at future lepton colliders, focusing on cLFV scattering at μTRISTAN and enhanced di-Higgs production at high-energy lepton colliders. These complementary probes highlight the potential of future colliders to uncover the...
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Matheus Martines de Azevedo da Silva (University of São Paulo/Laboratoire De Physique Des 2 Infinite Irène Joliot-Curie)20/10/2026 11:15
Since the discovery of the Higgs boson, no clear signs of New Physics (NP) have been observed at the LHC. This absence is consistent with a separation between the scale of NP and the electroweak scale. In this scenario, Effective Field Theories (EFTs) provide a model-independent framework for analyzing LHC data and searching for indirect effects of physics beyond the Standard Model. In this...
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Christoph Borschensky (Karlsruhe Institute of Technology)20/10/2026 11:40
Extended Higgs sectors beyond the Standard Model (BSM) allow to dynamically generate the observed baryon asymmetry of the Universe through electroweak baryogenesis and thereby solve one of the most prominent open problems of the SM. The strong first-order phase transitions (PTs), required to preserve the generated asymmetry in the electroweak vacuum, source gravitational waves (GW) that can be...
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Victor Saulquin (Université de Strasbourg, IPHC)20/10/2026 12:05
The problem of hierarchy in flavour physics suggests the existence of a broken flavour symmetry. Modular symmetry is one of them but needs only one field, the modulus, which simultaneously plays the role of a flavon and Yukawa couplings are promoted to function of this modulus. Fields transformations under modular symmetry are characterized by an integer called the weight and a representation...
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Louis Moureaux (Universität Hamburg)20/10/2026 14:00Methods and Tools
Despite strong motivation from theory and an intensive search
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programme, no particle beyond the standard model has been
discovered at the LHC. Since model specific searches cannot
test every possible signal model, a broader approach capable
of testing many hypotheses at once is needed. Anomaly
detection refers to the set of machine-learning methods
specifically designed for... -
Lorenz Vogel (ITP, Heidelberg University)20/10/2026 14:30Methods and Tools
Unsupervised anomaly detection with autoencoders is a promising data-driven and model-agnostic approach for new physics searches at the LHC. However, although neural network-based anomaly scores have transformative potential, they suffer from a lack of statistical interpretability. The normalized autoencoder (NAE) provides a probabilistic interpretation of the standard bottleneck architecture,...
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Rebecca Maria Kuntz (Astronomisches Rechen-Institut, Universität Heidelberg)20/10/2026 14:50Methods and Tools
Many classification and reconstruction tasks in physics rely on learned latent representations of the data. When networks are trained with a notion of locality, they encode task-specific similarity as closeness in the latent space. Differential geometry, particularly information geometry, is a powerful tool to uncover the learned information in these latent representations and thereby retrace...
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Rebecca Revelli (Institute for theoretical physics Heidelberg)20/10/2026 15:45Methods and Tools
We employ neural control variates to minimize the range of event weights and avoid negative weights for phase-space integration and event generation. A signed control variate, built from two normalizing flows, fulfills both tasks. Combined with neural importance sampling, it significantly reduces the computational cost of LO and NLO predictions. For the NLO case, our conditional neural control...
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Ranit Das (Universität Heidelberg)20/10/2026 16:05Methods and Tools
Simulation-based inference (SBI) is a powerful tool for likelihood-free parameter estimation, but often requires large numbers of simulated events. At the LHC, where event generation can be computationally expensive, particularly with restrictive generator-level cuts and detector simulation, this can become a major bottleneck. We demonstrate sequential SBI for the inference of resonance masses...
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Daniel Schiller (Institute for Theoretical Physics, Heidelberg University)20/10/2026 16:25Methods and Tools
We present an effective and communicative set of agents working with MadGraph and SFitter. Agentic installation, learning-by-doing training, and user support provide easy access to state-of-the-art simulations and accelerate LHC research. We show how MadAgents interact with inexperienced and advanced users, automatize event generation and autonomous simulation campaigns, and update a global...
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20/10/2026 17:15
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Dr Johannes Braathen (DESY)21/10/2026 09:30Higgs
Reconstructing the shape of the Higgs potential realised in Nature is crucial to understand the dynamics of the electroweak phase transition and probe physics beyond the Standard Model (BSM). For this purpose, precise theoretical predictions are needed for trilinear scalar couplings, which control the form of the potential, and for Higgs pair production cross-sections, which are the physical...
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Christian Mavungu Tsava (CNRS)21/10/2026 10:00Higgs
A search for non-resonant hh production in the bbtt final state combines the full Run 2 dataset, corresponding to 140 fb^{-1} at √s = 13 TeV, with 56 fb^{-1} of early Run 3 data collected in 2022–2023 at √s = 13.6 TeV. Compared to the previous analysis in the same final state, the current analysis benefits from the additional integrated luminosity provided by the early Run 3 dataset, improved...
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Sauro Carlotti (Karlsruhe Institute of Technology - ITP)21/10/2026 11:05Higgs
After the discovery of the Higgs boson in 2012, the measurement of the Higgs self-coupling is still a challenge for current and future experiments in particle physics.
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Higgs-boson pair production via gluon fusion is a loop-induced process. In order to increase the accuracy of the theoretical predictions for this process, higher-order corrections are necessary to reduce theoretical... -
Mathis Dubau (LAPP)21/10/2026 11:40Higgs
The scattering of longitudinally polarised electroweak gauge bosons provides a direct probe of the mechanism of electroweak symmetry breaking and of the structure of the Standard Model at high energies. This talk presents the first measurement of longitudinal polarisation states in electroweak $\mathrm{W}^{\pm}\mathrm{Z}$ production in association with two jets ($\mathrm{WZjj}$-EW), using 140...
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21/10/2026 12:20
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Prof. Aldo Deandrea (IP2I - Université Lyon 1)
I will introduce the idea of asymptotic unification, based on requiring a fixed point in the UV at the perturbative level for the evolution of the couplings, and discuss the constraints and phenomenological consequences for this class of models.
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Leo Constantin (LPSC)
In arXiv:2512.14502, we discussed the coverage of the electroweakino sector of the phenomenological minimal supersymmetric standard model (pMSSM) with SModelS v3.0, comparing with the ATLAS pMSSM study and investigating what can be gained by a global likelihood analysis. I will present an update of this study based on the recently released SModelS v3.2. The major novelties are the inclusion of...
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