Physics Beyond Standard Model in Neutron Beta Decay

Details Physics Beyond Standard Model in Neutron Beta Decay Physics Beyond Standard Model in Neutron Beta Decay

2012-01-19

arxiv.org/abs/1201.4101v1

Acta Phys.Polon.B42:2493-2499,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 6 figures, presented at the XXXV International Conference of Theoretical Physics "Matter to the Deepest 2011", Ustron

Scientific paper

10.5506/APhysPolB.42.2493

Limits from neutron beta decay on parameters describing physics beyond the Standard Model are presented. New Physics is described by the most general Lorentz invariant effective Hamiltonian involving vector, scalar and tensor operators and Standard Model fields only. Two-parameter fits to the decay parameters measured in free neutron beta decay have been done, in some cases indicating rather big dependence of the results on g_A/g_V ratio of nucleon form factors at zero four-momentum transfer.

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