R-Parity Violation Effects on b_1 → bχ_1~0 in Minimal SupersymmetricStandard Model  

R-Parity Violation Effects on ~↑b1→b~↑x1^0 in Minimal Supersymmetric Standard Model

作　　者：ZHANGRen-You MAWen-Gan JIANGYi HOUHong-Sheng SUNYan-Bin 

机构地区：[1]DepartmentofModernPhysics,UniversityofScienceandTcchnologyofChina,Hefci230027,China [2]DepartmentofModernPhysics,UniversityofScienceandTcchnologyofChina,Hefei230027,China／／CCAST（WorldLaboratory）,P.O.Box8730,Beijing100080,China

出　　处：《Communications in Theoretical Physics》2005年第2期257-267,共11页理论物理通讯（英文版）

摘　　要：We investigate in detail the effects of R-parity lepton number violation onthe decay b_1 → bχ_1~0 in the R-parity violating minimal supersymmetric standard model (R_p-MSSM)under the present experimental constraints on R_p parameters. In our numerical calculations weconsider two cases of input parameters of the squark and slepton sectors, M_(squark) 【 M_(slepton)and M_(squark) 】 M_(slepton), for comparison. The results show that the relative R-parity violatingcorrection is not very sensitive to the mass of the lightest neutralino bχ_1~0 the degenerateR-parity violating coupling parameter λ′_2 but strongly depends on M_(squark), M_(slepton) tan βand tie degenerate R-parity violating coupling parameter λ′_1. The relative correction is about -4～ 3% and can exceed -6% in some region of parameter space. Therefore, precise experiment analyseson the decay b_1 → bχ_1~0 may provide a probe of the R-parity violation.

关 键 词：minimal supersymmetric standard model R-parity violation 

分 类 号：O572.341[理学—粒子物理与原子核物理]