Constraints on the R-Parity Violating Couplings Using the Newest Measurement of the Decay B08 →μ＋μ-  

作　　者：LI Cheng Lü Cai-Dian GAO Xiang-Dong 

机构地区：[1]Institute of High Energy Physics and Theoretical Physics Center for Science Facilities,Chinese Academy of Sciences, Beijing 100049, China [2]Institute of Physics, Academia Sinica, Nangang, Taipei 11529, Taiwan

出　　处：《Communications in Theoretical Physics》2013年第6期711-713,共3页理论物理通讯（英文版）

基　　金：Supported by the National Science Foundation of China under the Grant Nos, 11075168, 11228512, and 11235005, and the National Science Council of Taiwan under Grant No. 101-2811-M-001-060

摘　　要：Recently, the LHCb collaboration reported the first evidence for the decay B08 →μ＋μ-. A branching ratio of （B08 →μ＋μ-） = （3.2＋1.5-1.2） x 10-9 is given. Using the newest data, and together with the most precise predictions of the Standard Model contributions to the decay, we derive the constraints on the combinations of the R-parity violating parameters. Our results are several orders of magnitudes stronger than the constraints in the previous literature. We also update the constraints on the relevant parameters using the upper limit of B（B08 →μ＋μ-）.

关 键 词：SUPERSYMMETRY rare decay R-PARITY 

分 类 号：O172.2[理学—数学] TN818[理学—基础数学]