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Baryogenesis with four-fermion operators in low-scale models

Thomas Dent
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Abstract

We describe a nonstandard proposal for baryogenesis in models with a low (O(10-100)TeV) fundamental scale. The scenario has Standard Model field content and enhanced baryon number violating operators deriving from time-dependent fermion localization in an extra dimension. The CKM matrix provides sufficient CP violation. The major constraints are the low reheating temperature and rate of perturbative B-violating reactions compared to the total entropy created. A sufficient baryon fraction may arise, but the cosmological evolution required is likely to be somewhat contrived. Based on work in collaboration with D.J.H. Chung.

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Thomas Dent. 2002-01-30. Baryogenesis with four-fermion operators in low-scale models. https://doi.org/10.1142/9789812776426_0016

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