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The Mitchell Conference on Collider, Dark Matter, and Neutrino Physics 2023

16–19 May 2023
Texas A&M University
US/Central timezone

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Session

Cosmology

16 May 2023, 09:30
Hawking Auditorium (Texas A&M University)

Hawking Auditorium

Texas A&M University

Conveners

Cosmology

  • Kaustubh Agashe

Cosmology

  • Keith Dienes (University of Arizona)

Presentation materials

There are no materials yet.

  1. 6. Parity solution to the strong CP problem and leptogenesis
    Rabindra Mohapatra
    16/05/2023, 09:30

    I discuss parity solutions to the strong CP problem which do not need an axion. It is implemented within the context of left-right symmetric models with minimal Higgs content and the universal seesaw mechanism using vector like fermions to generate quark and lepton masses. I discuss a way to understand the origin of matter-anti-matter asymmetry in these models using Affleck-Dine (AD)...

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  2. 13. Leptogenesis triggered by a first-order phase transition
    Peisi Huang
    16/05/2023, 09:55

    In this talk, I will present a new scenario of leptogenesis, which is triggered by a first-order phase transition (FOPT). The right-handed neutrinos (RHNs) are massless in the old vacuum, while they acquire a mass in the new vacuum bubbles, and the mass gap is huge compared with the FOPT temperature. The ultra-relativistic bubble walls sweep the RHNs into the bubbles, where the RHNs experience...

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  3. 22. Probing the Early Universe with Dark Matter Annihilation
    Adrienne Erickcek
    16/05/2023, 10:20

    As remnants of the earliest stages of structure formation, the smallest dark matter halos provide a unique probe of the evolution of the Universe prior to the onset of Big Bang nucleosynthesis (BBN). I will discuss how the pre-BBN expansion history can enhance the microhalo population, thereby boosting the dark matter annihilation rate if dark matter is a thermal relic. The amplitude of this...

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  4. 52. Stasis in an Expanding Universe: Overview, Concrete Realizations, and Observational Consequences
    Brooks Thomas
    19/05/2023, 11:15
  5. 2. Dark Matter and Baryogenesis from Long-Lived Particles in the Visible Sector
    Rouzbeh Allahverdi (University of New Mexico)
    19/05/2023, 11:40

    A minimal extension of the standard model is presented that includes a long-lived fermion with weak-scale mass and an O(GeV) fermionic dark matter candidate. Decays of a TeV-scale colored scalar in a radiation-dominated phase bring the former to a thermal abundance while also producing dark matter. The long-lived fermion then drives a period of early matter domination and decays to reheat the...

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  6. 42. Parity solution to the strong CP problem and leptogenesis
  7. 51. TBA
    Keith Dienes (University of Arizona)
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