Spectroscopy of family gauge bosons

Spectroscopy of family gauge bosons is investigated based on a U(3) family gauge boson model proposed by Sumino. In his model, the family gauge bosons are in mass eigenstates in a diagonal basis of the charged lepton mass matrix. Therefore, the family numbers are defined by (e(1), e(2), e(3)) = (e, mu, tau), while the assignment for quark sector are free. For possible family-number assignments (q(1), q(2), q(3)), under a constraint from K-0-(K) over bar (0) mixing, we investigate possibilities of new physics, e.g. production of the lightest family gauge boson at the LHC, mu N- -> e(-)N, rare K and B decays, and so on. (C) 2014 The Author. Published by Elsevier B.V.