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Gabriel Oliveira Corrêa (IFAE)10/10/2025, 09:45Talk
Studying the properties of the Higgs boson remains a central objective of modern collider experiments, such as the ATLAS Experiment. While the discovery of the Higgs boson was a groundbreaking achievement over a decade ago, ongoing analyses continue to refine our understanding of its properties. Since then, many studies have been designed to constrain the properties related to the Higgs boson,...
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Laia Montellà (ICCUB)10/10/2025, 09:54Talk
We show that the threshold to form a black hole, in an asymptotically flat, radiation dominated, Friedman-Robertson-Walker (FRW) universe, is not solely (mainly) determined by the behavior of the compaction function at its maximum, as earlier thought, but also by the three-dimensional curvature at smaller (but super-horizon) scales, which we call ``the core''. We find three classes of initial...
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Ernest Olivart (ICCUB)10/10/2025, 10:03Talk and Poster
This work focuses on adapting LHCb’s existing machine learning approach to electron identification to the upgraded conditions of Run 3. The LHCb experiment at CERN focuses on precision measurements in heavy-flavour physics, where efficient particle identification (PID) is crucial. During the last LHC Long Shutdown (2019-
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2022) a major upgrade to the detector was done, including a... -
Julien Poyatos (ICCUB)10/10/2025, 10:12Talk
M dwarfs are the most common stars in our Galaxy and frequent hosts of exoplanets. Many of these stars are also highly active, producing powerful flares far more often than the Sun. The radiation released during these events can erode planetary atmospheres, but it may also provide the energy needed to trigger prebiotic chemistry. In this talk, I will review the current state of the field and...
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Héctor Cancio Andel (IFAE)10/10/2025, 10:21Talk
We compute the form factors of both the neutral and charged pion using a non-perturbative running of the strong coupling constant αs obtained in a previous work. These form factors remain poorly understood in the
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intermediate energy region, which marks the transition between low-energy and high-energy physics. In particular, experimental data for the neutral pion form factor exhibits a... -
Stefano Trezzi (Institute of Cosmos Sciences, University of Barcelona (ICCUB))10/10/2025, 10:30Talk
We investigate the scattering of electromagnetic and gravitational waves off a Reissner-Nordström black hole in the low-temperature regime where the near-horizon throat experiences large quantum fluctuations. We find that the black hole is transparent to electromagnetic and gravitational radiation of fixed helicity below a certain frequency threshold. This phenomenon arises because the angular...
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Sanjay Rijal (IFAE)10/10/2025, 10:39Talk and Poster
The Standard Model (SM) of particle physics, despite its success, leaves many key phenomena unexplained. Traditional searches for new physics at the LHC rely on model-dependent approaches, each probing only a specific Beyond Standard Model (BSM) hypothesis. However, a discovery is not guaranteed if the true solution lies outside the considered models, highlighting the need for...
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Pedro Tarancón Álvarez (ICCUB)10/10/2025, 10:48Talk
I will present Denario, an AI multi-agent system designed to be a scientific research assistant. Denario can perform many different tasks, such as generating ideas, checking the literature, developing research plans, writing and executing code, making plots, and writing a scientific paper. Denario is built as a modular system, and therefore, can perform either very specific tasks, such as...
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Noé Duarte González (IFAE)10/10/2025, 10:57Talk and Poster
In this work, we present a comprehensive analysis of axion-meson mixing and scattering processes at leading order in three-flavor, large Nc chiral perturbation theory (ChPT). Treating the axion as a general axion-like particle (ALP) coupled derivatively to quark axial currents, we construct the effective chiral Lagrangian including meson and axion degrees of freedom, with all mixing effects...
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Helena Ubach Raya (Universitat de Barcelona, ICCUB)10/10/2025, 11:06Talk
What happens when gravitational waves encounter a massive astrophysical object? Gravitational lensing, traditionally seen with light, bends and distorts gravitational waves as a result of the object’s gravity. Gravitational lensing can be a useful tool to learn more about the nature and the properties of these astrophysical objects (gravitational lenses), and is expected to distort...
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Sandra Tomàs Valls (ICCUB)10/10/2025, 12:00Talk
Have you ever wondered what Pokémon and particle physics have in common? I did. So let me take you along my journey to becoming a true Particle Master. Like any respectable Pokémon adventure, it all starts with choosing your first particle. Mine is charmonium (Charmander best gen 1 starter). Before sending it into battle, the most important thing is to understand its properties and...
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Víctor Rodríguez Morales (Institute of Space Siences (ICE))10/10/2025, 12:09Talk
Feedback from an active galactic nucleus (AGN) is one of the most important mechanisms in galaxy evolution. This phenomenon is usually found in massive galaxies and is known to regulate star formation. Although dwarf galaxies are assumed to be regulated by supernova feedback, recent studies have offered evidence to support the presence of AGN outflows and feedback in dwarf galaxies.
We...
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Aitor Vicente-Cano (ICCUB)10/10/2025, 12:18Talk
It has been recently shown that the Schwarzschild black hole singularity is generically resolved in $D\geq 5$ spacetime dimensions by introducing an infinite tower of higher-curvature corrections to the Einstein-Hilbert action. In such theories, Birkhoff’s theorem holds, and the collapse of matter has been shown to lead to the formation of regular black holes.
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In my talk, I will explain how... -
Clarisse Prat (IFAE)10/10/2025, 12:27Talk and Poster
In this study, we place constraints on a composite t-channel dark matter model using CONTUR and MadAnalysis 5. The model is similar to those currently being studied by the DM working group and is representative of composite dark matter constructions, with a scalar dark matter candidate and three VLQ partners (mediators). We investigate the exclusions obtained from the subprocesses in LO and...
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Jordi Delgado Mengual (PIC-CIEMAT)10/10/2025, 12:36Talk
The CosmoHub is a Big Data platform designed to enable the exploration and analysis of heterogeneous datasets within a unified environment. It was originally developed to serve cosmological surveys such as DESI DR1, DES, Euclid Q1, Gaia, Quaia, and Glade+, among others. It has since been extended to support the ingestion and cross-analysis of multi-messenger data. Recent integrations include...
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Balma Duch (IFAE)10/10/2025, 12:45Talk and Poster
The γZ box correction plays a key role in precision studies of electron–proton scattering, where it impacts the determination of the weak mixing angle. Earlier calculations often relied on simplifying assumptions such as forward-scattering limits or helicity independence, which limit their applicability to real experimental conditions.
We present a new calculation that retains the full...
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Alberto Revilla (Institut de Ciències del Cosmos Universitat de Barcelona (ICCUB))10/10/2025, 12:54Talk
This talk shows our work studying the detectability of resonance effects in BNS and NSBH binaries. The resonant effects under study consist of the excitation of NS oscillatory modes due to the coupling of the modes with the tidal field exerted by the companion object during inspiral phase. Mode excitation occurs when the orbital frequency of the binary sweeps through the characteristic...
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Alex González Fuentes10/10/2025, 13:03Talk
Hints of dynamical dark energy (DE) have strengthened under the combination of data from CMB, SNIa and BAO from DESI. This evidence is typically quantified using the well-known CPL parameterization of the DE equation-of-state, $w_\mathrm{DE}=w_0+w_a(1-a)$. However, this truncation may bias our interpretation of the data, potentially leading us to mistake spurious features of the best-fit CPL...
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Issam Youbi (IFAE)10/10/2025, 13:12Talk
The increased particle flux at the High-Luminosity Large Hadron Collider (HL-LHC) will pose a significant challenge to the ATLAS detector's performance, particularly in the forward region. To address this, a novel High-Granularity Timing Detector (HGTD) will be installed in front of the liquid Argon end-cap calorimeters. The HGTD is a key upgrade for pile-up mitigation and luminosity...
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