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Dr Van Que Tran (NCTS, National Taiwan University)09/01/2026, 11:00
Professor Pham Quang (P.Q.) Hung (1950–2024) was a renowned theoretical particle physicist and a dedicated educator whose influence extended well beyond academia. Born in Ninh Binh, Vietnam, he rose from humble beginnings to achieve global recognition, leaving a lasting impact through his groundbreaking research and unwavering commitment to advancing physics education in Vietnam. His passing...
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Prof. Tao Han (University of Pittsburgh)09/01/2026, 15:00
With the milestone discovery of the Higgs boson at the LHC, detailed study of its properties becomes a high priority for collider physics. After a brief overview of the properties of the longitudinal gauge bosons and the Higgs boson, we revisit the Goldstone boson equivalence theorem and define the “electroweak symmetry restoration” (EWSR) quantitatively. We present some examples to examine...
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Antonio Delgado (University of Notre Dame (US))12/01/2026, 11:00
We identify m12 as a spurion of non-invertible Peccei-Quinn symmetry in the type II 2HDM with gauged quark flavor. Thus a UV theory which introduces quark color-flavor monopoles can naturally realize alignment without decoupling and can furthermore revive the Weinberg-Wilczek axion. As an example we consider the SU(9) theory of color-flavor unification, which needs no new fermions. This is the...
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Andrew Long (Rice University)12/01/2026, 12:30
The Higgs field's nonzero vacuum expectation value signals that the electroweak symmetry is spontaneously broken. In the early universe, if the primordial plasma reached temperatures above the electroweak scale, then this breaking would have occurred dynamically during the cosmological electroweak phase transition. I will discuss the speed of Higgs-phase bubble walls that would have...
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Miguel Angel Soto Alcaraz12/01/2026, 14:30
A novel strategy for detecting radiative decay of very weakly interacting particles is explored by leveraging the extreme sensitivity of quantum devices, to faint electromagnetic signals. By modeling the effective electric field induced by the decay photons, the response of quantum sensors is evaluated across two particle physics scenarios: the cosmic neutrino background and two-component dark...
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Eduardo Peinado13/01/2026, 11:00
The strong CP problem in QCD remains one of the most compelling puzzles in particle physics, traditionally addressed through the Peccei–Quinn mechanism and the axion. In this talk, I will present a 2HDM extension of the Standard Model, where CP is spontaneously broken, offering a viable and testable approach to resolving the strong CP problem without invoking an axion.
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Prof. León Manuel García de la Vega (Universidad de Sonora)13/01/2026, 12:30
In this talk we will discuss scenarios where BSM physics related to dark matter and neutrinos can impact flavor observables. In particular we will focus on a scenario where the generation of Dirac neutrino masses can result in an enhancement of both $d_i\rightarrow d_j +(inv.)$ transitions and lepton flavour violating observables.
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Kort Beck (University of Illinois Urbana-Champaign)13/01/2026, 14:30
The presence of mixed ’t Hooft anomalies between zero and one-form symmetries could further constraint the possible low energy phases of some chiral gauge theories. By first constructing the full global symmetry group that acts faithfully on the fermions, we compute all the anomalies in the UV regime, which include mixed ’t Hooft anomalies between one-form and zero-form symmetries, for a large...
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Oscar Carranza Jimenez (Instituto de Física, UNAM)14/01/2026, 11:00
In this talk, I present ongoing work on Boltzmann framework to study dark matter in the Hidden Vector Sector model. The calculation includes all relevant processes at once: WIMP annihilations, SIMP-like, and forbidden channels. By solving the coupled evolution of the dark matter abundance, the dark scalar, and the dark-sector temperature, we can identify how different mechanisms dominate at...
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Patrick Fitzpatrick (Instituto de Física UNAM)14/01/2026, 12:30
Increasingly strong experimental constraints on new physics at the electroweak scale motivate us to explore new possibilities for dark matter (DM) beyond the thermal weakly-interacting massive particle (WIMP) paradigm. One important strategy to excavate the experimentally viable space of new possibilities for DM is to abandon the assumption of thermal equilibrium between the dark and Standard...
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Myriam Mondragon15/01/2026, 11:00
We present an overview of the development of Beyond the Standard Model physics at UNAM in the past few decades. From string theory to low energy models, cosmology and astroparticle physics, the group has addressed a large range of subjects, naturally connecting to other groups in Mexico and abroad. Among the topics that have been studied are: string theory and phenomenology, aspects of field...
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Omar Miranda (Cinvestav Centro de Investigacion y de Estudios Avanzados del IPN)15/01/2026, 12:00
In this talk, I will give a historical review of the contributions to physics beyond the Standard Model made at Cinvestav. I will show that we have been developing several research areas over several years, which remain at the forefront of research, and I will also discuss our current interest in this exciting research area.
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Alexander Stuart (Universidad de Colima)16/01/2026, 14:30
After a brief review of the history of BSM physics done at the Universidad de Colima, we discuss some current and future research being developed there.
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Prof. Jaime Hernández-Sánchez (Benemérita Universidad Autónoma de Puebla)
I will talk about the study Beyond the Standard Model of some Mexican groups.
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