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   https://doi.org/10.1103/glgl-v4v6  

   Elor, Gilly; Houtz, Rachel; Ipek, Seyda; Ulloa, Martha (July 2025, Physical Review D)

   Is the standard model charge-parity ( $CP$) violation ever enough to generate the observed baryon asymmetry? Yes! We introduce a mechanism of baryogenesis (and dark matter production) that can generate the entire observed baryon asymmetry of the Universe using the $CP$violation within standard model systems—a feat which no other mechanism currently proposed can achieve. Baryogenesis proceeds through a mesogenesis scenario but with well motivated additional dark sector dynamics: a field generates present day mass contributions for the particle mediating the decay responsible for baryogenesis. The effect is an enhancement of baryon production while evading present day collider constraints. The $CP$violation comes entirely from standard model contributions to neutral meson systems. Meanwhile, the dark dynamics generate gravitational waves that may be searched for with current and upcoming pulsar timing arrays, as we demonstrate with an example potential that is tuned to generate domain walls that annihilate later. This mechanism, , motivates probing a new parameter space as well as improving the sensitivity of existing mesogenesis searches at hadron and electron colliders. Published by the American Physical Society2025 

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   Baglio, Julien; Dawson, Sally; Homiller, Samuel; Lane, Samuel D.; Lewis, Ian M. (June 2020, Physical Review D)