14–15 Nov 2026
University of Kansas
US/Central timezone

Session

Neutrinos, scalars, phase transitions

15 Nov 2026, 09:00
2048 Malott Hall (University of Kansas)

2048 Malott Hall

University of Kansas

Department of Physics & Astronomy University of Kansas Lawrence, KS

Presentation materials

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  1. Yatharth Sirohi (University of Iowa)
    15/11/2026, 09:00

    Heavy neutral leptons (HNLs) are hypothetical particles that could help explain the origin of neutrino masses. Their interactions with Standard Model particles are suppressed by small active–sterile mixing, but a scalar mediator can open additional production channels. In this work, we study HNL production through scalar production in meson decays and proton bremsstrahlung, followed by scalar...

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  2. Soumya Bonthu
    15/11/2026, 09:15

    We examine the full effective neutrino potentials for a range of dark matter candidates and interaction scenarios. Incorporating constraints on the model parameters, we use these potentials to study high-energy neutrino flavor evolution through dark matter spikes. This framework allows us to explore how dense dark matter environments modify neutrino flavor composition and assess the resulting...

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  3. Jose Padron (Washington University in Stl)
    15/11/2026, 09:30

    Dark matter and neutrinos are important topics in modern physics. We propose a new method for probing the dark sector through high energy neutrino scattering. Using a dark sector that behaves similarly to the Standard Model, we show that dark rho mesons can mediate interactions between high energy cosmic neutrinos and relic neutrinos left over from the Big Bang. We find that this method can...

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  4. Anirudh Chandra Shekar (Texas A&M University)
    15/11/2026, 09:45

    The Earth may provide an interesting source for the production of axions. The crust and mantle portion contain heavy radionuclides, which can produce axions either via Compton or Primakoff scattering. We look at the detection capabilities of large-scale terrestrial neutrino detectors as well as satellite Compton telescopes in probing the axion-electron coupling $g_{aee}$ and the axion-photon...

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  5. Brooks Hartsock (Wichita State University)
    15/11/2026, 10:00

    Low-energy neutrino interactions can produce delayed double-pulse signatures through the population of nuclear excited states, potentially providing better means of distinguishing neutrino interactions from radiological backgrounds. Both $^{57}$Co and $^{71}$As exhibit similar signatures by decaying through excited states with half lives on the order of 100 ns. Studying these decays allows us...

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  6. Pratyay Pal (Oklahoma State University)
    15/11/2026, 10:15

    Collisions of ultra-relativistic bubble walls during a cosmological first-order phase transition can act as a “cosmic collider,” producing particles far heavier than the transition scale. Previous treatments model the process as the off-shell decay of the scalar background. This approach parametrically overestimates hard particle production and yields results that depend on the gauge and on...

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  7. Brady Child (The University of Kansas)
    15/11/2026, 10:30

    The leptophilic multi-Higgs doublet model introduces two additional Higgs doublets whose heavy states can participate in generating the matter-antimatter asymmetry of the Universe. These states can have masses in the multi-TeV range, making a 10 TeV parton center-of-momentum collider well suited to searching for them. In this talk, the motivation for high-energy muon colliders and the...

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  8. Isabella Estes (University of Kansas)
    15/11/2026, 10:45

    The leptophilic multi-Higgs doublet model introduces two additional Higgs doublets whose heavy states can participate in generating the matter-antimatter asymmetry of the Universe. These states can have masses in the multi-TeV range, making a 10 TeV parton center-of-momentum collider well suited to searching for them. In this talk, signal selection, collider observables, and...

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