Analysis of Bs→φμ+μ- decay within supersymmetry

XU Yuan-Guo; ZHOU Li-Hai; LI Bing-Zhong; WANG Ru-Min

doi:10.1088/1674-1137/37/6/063104

Chinese Physics C> 2013, Vol. 37> Issue(6) : 063104 DOI: 10.1088/1674-1137/37/6/063104

Analysis of B_s→φμ⁺μ^- decay within supersymmetry

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Abstract：
Motivated by the rst measurement on B(B_s→φμ⁺μ^-) by the CDF Collaboration, we study the supersymmetric e ects in semi-leptonic B_s→φμ⁺μ^- decay. In our evaluations, we analyze the dependences of the dimuon invariant mass spectrum and the forward-backward asymmetry on relevant supersymmetric couplings in the MSSM with and without R-parity. The analyses show that the new experimental upper limits of B(B_s→φμ⁺μ^-)from the LHCb Collaboration could further improve the bounds on sneutrino exchange couplings and (δ_LL^u)₂₃ as well as (δ_LL,RR^u)₂₃ mass insertion couplings. In addition, within the allowed ranges of relevant couplings under the constraints from B(B_s→φμ⁺μ^-), B(B→K^(*)μ⁺μ^-) and (B_s→φμ⁺μ^-), the dimuon forward-backward asymmetry and the di erential dimuon forward-backward asymmetry of B_s→φμ⁺μ^-are highly sensitive to the squark exchange contribution and the (δ_LL^u)₂₃ mass insertion contribution. The results obtained in this work will be very useful in searching for supersymmetric signals at the LHC.

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XU Yuan-Guo, ZHOU Li-Hai, LI Bing-Zhong and WANG Ru-Min. Analysis of B_s→φμ⁺μ^- decay within supersymmetry[J]. Chinese Physics C, 2013, 37(6): 063104. doi: 10.1088/1674-1137/37/6/063104

XU Yuan-Guo, ZHOU Li-Hai, LI Bing-Zhong and WANG Ru-Min. Analysis of B_s→φμ⁺μ^- decay within supersymmetry[J]. Chinese Physics C, 2013, 37(6): 063104. doi: 10.1088/1674-1137/37/6/063104 shu

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Received: 2012-07-31
Revised: 2012-09-08

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Analysis of B_s→φμ⁺μ^- decay within supersymmetry

Corresponding author: WANG Ru-Min,

Received Date: 2012-07-31

Accepted Date: 2012-09-08

Available Online: 2013-06-05

Abstract: Motivated by the rst measurement on B(B_s→φμ⁺μ^-) by the CDF Collaboration, we study the supersymmetric e ects in semi-leptonic B_s→φμ⁺μ^- decay. In our evaluations, we analyze the dependences of the dimuon invariant mass spectrum and the forward-backward asymmetry on relevant supersymmetric couplings in the MSSM with and without R-parity. The analyses show that the new experimental upper limits of B(B_s→φμ⁺μ^-)from the LHCb Collaboration could further improve the bounds on sneutrino exchange couplings and (δ_LL^u)₂₃ as well as (δ_LL,RR^u)₂₃ mass insertion couplings. In addition, within the allowed ranges of relevant couplings under the constraints from B(B_s→φμ⁺μ^-), B(B→K^(*)μ⁺μ^-) and (B_s→φμ⁺μ^-), the dimuon forward-backward asymmetry and the di erential dimuon forward-backward asymmetry of B_s→φμ⁺μ^-are highly sensitive to the squark exchange contribution and the (δ_LL^u)₂₃ mass insertion contribution. The results obtained in this work will be very useful in searching for supersymmetric signals at the LHC.

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Analysis of B_s→φμ⁺μ^- decay within supersymmetry

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