BILEPTON CONTRIBUTIONS TO THE NEUTRINOLESS DOUBLE BETA DECAY IN THE ECONOMICAL 3-3-1 MODEL
Soa D.V., Dong P.V., Huang T.T., Long H.N.

Поступила в редакцию: 29 Мая 2008

PACS: 12.60.Fr, 14.80.Cp, 12.60.Cn

DJVU (86.1K)

PDF (268.9K)

A new bound of the mixing angle between charged gauge bosons (the standard-model W and the bilepton Y) in the economical 3-3-1 model is given. Possible contributions of the charged bileptons to the neutrinoless double beta ((ββ)_{0 u}) decay are discussed. We show that the (ββ)_{0 u} decay in this model is due to both the Majorana and Dirac neutrino masses. If the mixing angle is in the range of the ratio of neutrino masses , the Majorana and Dirac masses are comparable to each other and both may give the main contribution to the decay. As a result, constraints on the bilepton mass are given.