论文标题
$ h^ - $解释的复兴$ r_ {d^{（*）}}} $异常和关闭低质量窗口
Revival of $H^-$ interpretation of $R_{D^{(*)}}$ anomaly and closing low mass window
论文作者
论文摘要
得益于最近对$ b_c $梅森寿命的理论预测进行了仔细的重新访问，发现保守的上限限制了$τν$模式的分支比率（BR），这是$ \ simeq 63 \％$，由于大型Charm Quark Quark质量不确定性。 Although it is well known that a charged Higgs ($H^-$) interpretation of the $R_{D^{(*)}}$ anomaly is excluded by the previously proposed bounds, BR$(B_c\toτν)\le 30\%$ and $\le10\%$, $H^-$ can still explain the anomaly within $1σ$ if we adopt the 63$\%$ one.标量贡献也受到极化数据$ f_l^{d^*} $的偏爱。由于隐含的NP量表在大型强子对撞机（LHC）的范围内，因此对撞机搜索是测试场景的强大工具。例如，$τν$共振搜索已经使$ m_ {h^ - } \ ge 400 \，$ gev的更为严格的绑定。在这项工作中，我们重新审视了$ 180 \，$ gev $ \ le m_ {h^ - } \ le 400 \，$ gev，$ gev，$ gev，$ gev，$ gev，$ gev，$ gev。我们将看到，传统的STAU搜索和低质量风味和底部风味的DI-JET共振搜索的结合可以对解释产生新的限制。我们总结了低质量区域的当前状态，并根据现有的对撞机约束讨论高光度（HL）-LHC中的未来灵敏度。
Thanks to the recent careful revisit of the theoretical prediction of the $B_c$ meson lifetime, the conservative upper bound on the branching ratio (BR) of $τν$ mode is found to be $\simeq 63\%$ due to the large charm quark mass uncertainty. Although it is well known that a charged Higgs ($H^-$) interpretation of the $R_{D^{(*)}}$ anomaly is excluded by the previously proposed bounds, BR$(B_c\toτν)\le 30\%$ and $\le10\%$, $H^-$ can still explain the anomaly within $1σ$ if we adopt the 63$\%$ one. The scalar contribution is also favored by the polarization data $F_L^{D^*}$ measured at the Belle. Since the implied NP scale is within the reach of the Large Hadron Collider (LHC), collider searches are powerful tools to test the scenario. For instance, the $τν$ resonance search has already put the more stringent bound for $m_{H^-}\ge 400\,$GeV. In this work we revisit the further lighter mass range, $180\,$GeV$\le m_{H^-}\le 400\,$GeV which has not been covered yet. We will see that a combination of the conventional stau search and low mass flavor inclusive and bottom flavored di-jet resonance searches can place a new limit on the interpretation. We summarize the current status of the low mass region and discuss the future sensitivity in the high luminosity (HL)-LHC based on the existent collider constraints.
