Baryogenesis and late-decaying moduli
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Overview
abstract
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Late-decaying string moduli dilute the baryon asymmetry of the Universe created in any previous era. The reheat temperature for such moduli is below a GeV, thus motivating baryogenesis at very low temperatures. We present an extension of the minimal supersymmetric standard model with TeV-scale colored fields that can yield the correct baryon asymmetry of the Universe in this context. Modulus decay, which reheats the Universe at a temperature below GeV, produces the visible sector fields and neutralino dark matter in nonthermal fashion. We discuss various possibilities for baryogenesis from TeV-scale colored fields and show that they can generate an acceptable baryon asymmetry, while being compatible with phenomenological constraints like neutron-antineutron oscillation. © 2010 The American Physical Society.
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Allahverdi, R., Dutta, B., & Sinha, K
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Allahverdi, Rouzbeh||Dutta, Bhaskar||Sinha, Kuver
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https://hdl.handle.net/1969.1/180470
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