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Portorož 2023: Particle Physics from Early Universe to Future Colliders

10–14 Apr 2023
Europe/Zurich timezone

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Session

Early Universe, BSM

13 Apr 2023, 17:36

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  1. 23. nuEWBG: The scalar potential strikes back
    Salvador ROSAURO-ALCARAZ
    13/04/2023, 17:36
    Early Universe
    Invited talk

    We perform a comprehensive scan of the parameter space of a general singlet scalar
    extension of the Standard Model to identify the regions which can lead to a strong first-
    order phase transition, as required by the electroweak baryogenesis mechanism. We find
    that taking into account bubble nucleation is a fundamental constraint on the parameter
    space and present a conservative and fast...

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  2. 2. Dark Matter Dilution Mechanisms and Large Scale Structure
    Prof. Yue Zhang
    14/04/2023, 10:48
    Early Universe
    Invited talk

    Entropy production is a necessary ingredient for addressing the over-population of thermal relics. It is widely employed in particle physics models for explaining the origin of dark matter. A longlived particle that decays to the known particles, while dominating the universe, plays the role of the dilutor. We point out the impact of its partial decay to dark matter on the primordial matter...

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  3. 27. "On the origin of cosmic antimatter
    Zurab Berezhiani (Univ. L'Aquila)
    14/04/2023, 11:10

    TBA

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  4. 7. Leptogenesis in the minimal flipped SU(5) unification
    Michal Malinsky
    14/04/2023, 11:32
    Early Universe
    Invited talk

    We study the prospects of leptogenesis in the framework of the minimal flipped SU(5) gauge model in which the heavy Majorana neutrino mass scale is connected to the scale of unification via two-loop radiative effects. We argue that, in spite of a lower-than-usual seesaw scale, a successful thermal leptogenesis can take place in several regimes yielding a firm upper limit on the absolute light...

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  5. 53. Saturon Dark Matter
    Georgi Dvali
    Early Universe
    Invited talk

    Saturons are macroscopic objects with maximal microstate entropy. Due to this property, they can be produced via quantum transitions from a homogeneous thermal bath, bypassing the standard exponential suppression characteristic of ordinary extended objects. In this sense, saturons carry an advantage with respect to other macroscopic objects such as black holes and ordinary solitons. Due to...

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