Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-02-28
Acta Phys.Polon. B31 (2000) 1709-1719
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTeX2e, 13 pages, no figures; submitted to Acta Phys. Pol. B
Scientific paper
In this paper a scenario admitting the participation of right-handed vector V and axial A couplings with the conservation of the left-handed standard (V, A) couplings is considered. The research is based on the muon capture by proton. We consider muon capture at the level of the Fermi theory (four-fermion point interaction). Neutrinos are assumed to be massive and to be Dirac fermions. We propose neutrino observables, it means transverse components of the neutrino polarization, both T-odd and T-even. That would be a unique test verifying the participation of the right-handed (V, A) couplings in muon capture. The effects of the transverse neutrino polarization connected with the right-handed (V, A) couplings may be of the order of 7%. Our considerations are model-independent. We give the lower bound of 305 GeV on the mass of the right-handed gauge boson. This limit is compatible with the current bounds on the mass of the right-handed vector boson received from the weak interaction processes at low energy.
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