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23–26 Sept 2025
DESY Hamburg
Europe/Berlin timezone

Asymgenesis

25 Sept 2025, 14:00
18m
Bldg. 1b, seminar room 3 (DESY)

Bldg. 1b, seminar room 3

DESY

Cosmology & Astroparticle Physics Parallel Sessions Thursday Cosmo 1

Speaker

Sascha Weber (JGU Mainz)

Description

I present a new framework—Asymgenesis—that connects the baryon asymmetry of the universe to the dark matter density within the standard type-I seesaw model. The mechanism starts from a primordial charge asymmetry, either in the visible or dark sector, and redistributes it via a higher-dimensional portal operator. This process generates both a nonzero $B-L$ asymmetry and an asymmetric dark matter component.

Unlike conventional ADM scenarios, Asymgenesis places minimal demands on the portal interaction: it need not violate $B-L$, and the scales of $B-L$ violation and charge transfer can be separated. This enhances flexibility and broadens the model-building landscape for ADM

Primary authors

Martin Mojahed (JGU/ TUM) Sascha Weber (JGU Mainz)

Presentation materials