Rare top decay t-> c l+l- as a probe of new physics

Details Rare top decay t-> c l+l- as a probe of new physics Rare top decay t-> c l+l- as a probe of new physics

2012-03-30

arxiv.org/abs/1203.6889v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 6 figures

Scientific paper

The rare top decay t-> c l+l-, which involves flavor violation, is studied as a possible probe of new physics. This decay is analyzed with 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 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 the $BR(t-> c l+l-)~10^{-13} for a range 1 TeV < M_{Z'} < 3 TeV.

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