论文标题
搜索$ \ rm {x^{\ pm}（5568）} $状态衰减到$ \ rm {b^0_sπ^\ pm} $的统计组合
Statistical combination of searches for the $\rm{X^{\pm}(5568)}$ state decaying into $\rm{B^0_s π^\pm}$
论文作者
论文摘要
根据ATLAS，CMS，CDF和LHCB的协作，报告了狭窄$ \ rm {x^{\ pm}（5568）} $共振衰减成$ \ rm {B_S^0π^+} $的搜索结果的统计组合。 D0协作已经观察到了$ \ rm {B_S^0π^+} $的不变质量分布中的结构，其质量值为5568 MEV，但没有其他协作中的任何最新搜索证实。限制已设置为$ \ rm {x^{x^{\ pm}（5568）} $的相对生产率$ \ rm {ρ_x} $和$ \ rm {b^0_s} $ state，times decay $ \ rm \ rm \ rm \ rm {x^{x^{x^{\ pm}（55568）的分支率b^0_sπ^\ pm} $。 通过应用三个LHC实验设置的限制的统计组合，我们将限制以95 \％的置信度得出$ρ_x<0.0092 $ $ p_t（b^0_s）> $ 10 GEV和$ρ_x<0.0091 $ p_t <0.0091 $ for $ p_t（b^0_s）> $ 15 gev，$ 15 gev，supertirent，supersted supersding expertsed exprents desting dested supersed supersed supersed supersed supersed expstrent dested supersed extrent。还讨论了将CDF结果包括在内的效果。
A statistical combination of the search results for the narrow $\rm{X^{\pm}(5568)}$ resonance decaying into $\rm{B_s^0 π^+}$ is reported, based on published results from the ATLAS, CMS, CDF and LHCb Collaborations. A structure in the invariant mass distribution of $\rm{B_s^0 π^+}$ has been observed by the D0 Collaboration with a mass value of 5568 MeV but not confirmed by any of the latest searches from the other Collaborations. Limits have been set on the relative production rate $\rm{ρ_X}$ of the $\rm{X^{\pm}(5568)}$ and $\rm{B^0_s}$ states, times the branching ratio for the decay $\rm{X^{\pm}(5568) \rightarrow B^0_sπ^\pm}$. By applying a statistical combination of limits set by the three LHC experiments, we derive a limit at 95\% Confidence Level of $ρ_X < 0.0092$ for $p_T(B^0_s)>$ 10 GeV, and $ρ_X < 0.0091$ for $p_T(B^0_s)>$ 15 GeV, superseding the previous most stringent upper limits. The effect of including the CDF result in the combination is also discussed.
