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Towards leptogenesis at NLO: the right-handed neutrino interaction rate

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arxiv 1106.2814 v4 pith:XWREIVOQ submitted 2011-06-14 hep-ph hep-th

Alberto Salvio , Paolo Lodone , Alessandro Strumia This is my paper · ORCID
classification hep-phhep-th
keywords correctionscouplingsdivergencesinfra-redinteractionneutrinoorderrate
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We compute quantum and thermal corrections to the right-handed neutrino interaction rate in the early universe at next-to-leading order in all the relevant SM couplings (gauge, top Yukawa and higgs couplings). Previous computations considered 2 -> 2 scatterings, finding infra-red divergences. The KLN theorem demands that infra-red divergences cancel in the full result: after adding 1 -> 3 and one-loop virtual corrections that enter at the same order we find a simple result.

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Cited by 1 Pith paper

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  1. Computing singlet scalar freeze-out with plasmon and plasmino states

    hep-ph 2025-05 accept novelty 6.0 of 10

    A full thermal-resummation computation shows that plasmon and plasmino corrections leave the TeV-scale singlet scalar annihilation cross section essentially unchanged, reconfirming existing relic density constraints.

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