Sterile Neutrino Dark Matter (IOP Concise Physics) by Alexander Merle

Author:Alexander Merle [Merle, Alexander]
Language: eng
Format: azw3
ISBN: 9781681744810
Publisher: Morgan & Claypool Publishers
Published: 2017-05-15T04:00:00+00:00

where ‘⋯’ stands for the terms we have neglected. Thus, apart from the masses mS and M1 of the scalar and the sterile neutrino, respectively, the two couplings λ and y will be the decisive parameters for this production mechanism. The relevant interactions, responsible for the production of S and its decay, are depicted in figure 5.1.

Figure 5.1. Relevant Feynman diagrams. (Left) coupling of the scalar S to the SM-Higgs h (to be replaced by Φ for high enough T). (Right) coupling of the scalar S to two sterile neutrinos N.

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