Lepton asymmetries for theBs→γl+l−decay in a family nonuniversalZ′mode

Abstract

The exclusive B s → γl þ l − decay is analyzed in the framework of a family nonuniversal Z 0 model by calculating the differential branching ratio, double lepton polarizations, and forward-backward asymmetries. Our results are compared against those of the Standard Model. The predictions of this work are hoped to be tested in the near future at LHCb.

RareBs→γνν-Decay in Family NonuniversalZ′Şirvanlı1 2015Advances in High Energy PhysicsSelf Cite0000View full textAdd to dashboardCite

“…For S1 scenario, BR (1) is larger about 3 times and for S2 scenario BR (1) is larger about 1.3 times compared to that of the SM prediction. For S1 scenario, BR (2) gets even larger enhancement, which is about 3 times, and for S2 scenario BR (2) is larger about 2.5 times compared to the SM.…”

“…In Figure 1, we indicate the dependence of the BR (1) and BR (2) for → ]] decay in the family nonuniversal model. The superscripts (1) and (2) represent the positive and negative helicity states of photon, respectively.…”

“…The signature of this rare decay will be single photon and missing energy. (B s → ) Figure 1: The dependence of the integrated branching ratios BR (1) and BR (2) for the → ]] decay. The superscripts (1) and (2) indicate the photon in positive and negative helicity state, respectively.…”

“…If the rare decay has the same order branching ratio as that of → ℓ + ℓ − , it can be measurable in the near future. In [2], this process was studied also within the framework of a family nonuniversal model. The purpose of this study was to examine the rare → ]] decay in family nonuniversal model by taking into account the polarization of the photon.…”