https://doi.org/10.1140/epjc/s10052-012-2119-6
Regular Article - Theoretical Physics
Rare top decay 
as a probe of new physics
1
Cuerpo Académico de Partículas, Campos y Relatividad Facultad de Ciencias Físico-Matemáticas, BUAP, Apdo. Postal 1364, C.P. 72000, Puebla, Pue., México
2
Departamento de Física, FES-Cuautitlan, UNAM, C.P. 54770, Estado de México, México
* e-mail: rgaitan@unam.mx
Received:
8
May
2012
Revised:
23
July
2012
Published online:
28
August
2012
The rare top decay , which involves flavor violation, is studied as a possible probe of new physics. This decay is analyzed with one of the simplest Standard Model extensions with additional gauge symmetry formalism. The considered extension is the Left–Right Symmetric Model, including a new neutral gauge boson Z′ that allows one to obtain the decay at tree level through Flavor-Changing Neutral Currents (FCNC) couplings. The neutral gauge boson couplings are considered diagonal but family non-universal in order to induce these FCNC. We find 
for the range 1 TeV≤M
Z′≤3 TeV.
© Springer-Verlag / Società Italiana di Fisica, 2012
