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 pr...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-）.展开更多
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
文摘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-）.
