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arXiv · 1508.05392

Baryogenesis via Mesino Oscillations

Akshay Ghalsasi·David McKeen·Ann E. Nelson
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Abstract

We propose a new mechanism for baryogenesis at the 1-200 MeV scale. Enhancement of CP violation takes place via interference between oscillations and decays of mesinos--bound states of a scalar quark and antiquark and their CP conjugates. We present the mechanism in a simplified model with four new fundamental particles, with masses between 300 GeV and 10 TeV, and show that some of the experimentally allowed parameter space can give the observed baryon-to-entropy ratio.

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Akshay Ghalsasi, David McKeen, Ann E. Nelson. 2015-08-21. Baryogenesis via Mesino Oscillations. https://doi.org/10.1103/physrevd.92.076014

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