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Wolfgang Altmannshofer (UC Santa Cruz)10/09/2026, 09:00
Rare decays of B mesons provide sensitive probes of physics beyond the Standard Model. Since many years, measurements of angular observables in the decay B -> K* mu mu by the LHCb experiment have attracted considerable attention, in particular due to the persistent discrepancy in the observable P5'. More recent results also hint at a non-zero value for the observable S7, raising important...
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Koichi Hamaguchi (University of Tokyo)10/09/2026, 09:30
We revisit several minimal extensions of the Standard Model for dark matter. Depending on time, we discuss some or all of the following: (i) a scalar dark matter with higher-dimensional operators, where thermal misalignment provides a viable production mechanism; (ii) Majorana fermion dark matter with a coannihilating scalar, with the bino-slepton scenario in supersymmetry as a concrete...
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Tao Liu (HKUST)10/09/2026, 10:20
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Andrew Long (Rice University)10/09/2026, 10:50
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Lingfeng Li (Brown U.)10/09/2026, 11:20
We study whether short-time-scale physics in the early universe can leave visible imprints on later structure formation. In particular, we focus on oscillatory or localized features in the primordial matter power spectrum and ask how they affect the halo mass function. Using excursion set theory with different smoothing window functions, we find that these features can survive as oscillatory...
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Takeo Moroi (U. Tokyo)10/09/2026, 13:10
We present a detailed investigation of scenarios in which dark-photon dark matter is produced from quantum fluctuations during inflation. In particular, we focus on inflationary models that necessarily involve a Weyl transformation, dependent on the inflaton amplitude, in order to move to the Einstein frame. As a representative and phenomenologically important example, we analyze the...
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Roberto Vega-Morales (University of Granada)10/09/2026, 13:40Oral Presentation
In this talk I will review aspects of the inflationary Schwinger effect and its implications for dark matter. As part of this I will review the calculation of the Schwinger current in de Sitter space and show how peculiar IR divergences found in previous calculations can be cured. I will then review how the dark matter relic abundance can be generated through the inflationary Schwinger effect...
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Chen Sun (ICTP, Trieste)10/09/2026, 14:10
Multi-TeV gamma rays interact with optical and infrared background photons through electron-positron pair production. Their observed spectra therefore probe the extragalactic background light, particularly photons in the (0.01)–(0.1\,\mathrm{eV}) range. I will explain how gamma-ray observations reconstruct this background and why their agreement with integrated galaxy counts leaves little...
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Prof. Luca Visinelli (University of Salerno & INFN)10/09/2026, 15:00Oral Presentation
The QCD axion provides a compelling solution to the strong-CP problem and a leading dark-matter candidate. Its relic abundance depends on the epoch of Peccei–Quinn symmetry breaking and the thermal history of the early Universe. This talk examines how axion dark matter can populate the 0.49–1.49 μeV mass window targeted by haloscopes in Frascati National Laboratories. Although standard...
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Hao Zhang (Theoretical Physics Division, Institute of High Energy Physics, Chinese Academy of Sciences)10/09/2026, 15:30
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