Analysis of B-s -> phi mu(+)mu(-) decay within supersymmetry

作者：Xu Yuan-Guo^*; Zhou Li-Hai; Li Bing-Zhong; Wang Ru-Min

来源：Chinese Physics C, 2013, 37(6): 063104.

DOI：10.1088/1674-1137/37/6/063104

• B-s decay
• dimuon invariant mass spectra
• forward-backward asymmetry
• supersymmetry

Motivated by the first measurement on B(B-s -> phi mu(+)mu(-)) by the CDF Collaboration, we study the supersymmetric effects in semi-leptonic B-s -> phi mu(+)mu(-) decay. In our evaluations, we analyze the dependences of the dimuon invariant mass spectrum and-the forward-backward asymmetry on relevant supersymmetrie couplings-in the MSSM with and without R-parity. The analyses show that the new experimental upper limits of B(B-s -> mu(+)mu(-)) from the LHCb Collaboration could further improve the bounds on sneutrino exchange couplings and (delta(u)(LL))(23) as well as (delta(LL),(d)(RR))(23) mass insertion couplings. In addition, within the allowed ranges of relevant couplings under the constraints from B(B-s -> phi mu(+)mu(-)), B(B -> K-(*())mu(+)mu(-)) and B(B-s -> mu(+)mu(-)) the dimuon forward-backward asymmetry and the differential dimuon forward-backward asymmetry of B-s -> phi mu(+)mu(-) are highly sensitive to the squark exchange contribution and the (delta(u)(LL))(23) mass insertion contribution. The results obtained in this work will be very useful in searching for supersymmetric signals at the LHC.

• 出版日期2013-6
• 单位信阳师范学院