A thermal neutrino interaction rate at NLO

Jackson, G.; Laine, M. (2020). A thermal neutrino interaction rate at NLO. Nuclear physics B, 950, p. 114870. Elsevier 10.1016/j.nuclphysb.2019.114870

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The interaction rate of an ultrarelativistic active neutrino at a temperature below the electroweak crossover plays a role in leptogenesis scenarios based on oscillations between active neutrinos and GeV-scale sterile neutrinos. By making use of a Euclideanization property of a thermal light-cone correlator, we determine the O(g)correction to such an interaction rate in the high-temperature limit πT>>mW, finding a ∼15...40%reduction. For a benchmark point, this NLO correction decreases the lepton asymmetries produced by ∼1%.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Jackson, Gregory Scott and Laine, Mikko Sakari

Subjects:

500 Science > 530 Physics

ISSN:

0550-3213

Publisher:

Elsevier

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

04 Feb 2020 15:08

Last Modified:

09 Feb 2020 02:46

Publisher DOI:

10.1016/j.nuclphysb.2019.114870

ArXiv ID:

1910.12880

BORIS DOI:

10.7892/boris.139629

URI:

https://boris.unibe.ch/id/eprint/139629

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