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Beyond the Standard Model interactions in -decay of tritium

✍ Scribed by Rastislav Dvornicky; Fedor Šimkovic; Amand Faessler

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
218 KB
Volume
64
Category
Article
ISSN
0146-6410

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✦ Synopsis

We discuss the role of beyond the Standard model (SM) interactions (effective scalar and tensor interactions) in the β-decay of tritium. The theoretical framework is the Elementary Particle Treatment (EPT) of the transition 3 H → 3 He + e - + ν e , which allows one to derive relativistic form for the β-endpoint spectrum and to take nuclear recoil into account. We find that the interference of scalar and tensor charge-changing interactions, weaker than the V -A SM interaction, with the SM interaction cannot produce effects near the end point of the tritium β-decay spectrum which are of different character from those produced by the purely kinematic effect of the neutrino mass expected within the SM.

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