论文标题
与SID探测器（雪地白皮书）在ILC处无形Higgs玻色子衰减的预期敏感性
Expected Sensitivity to Invisible Higgs Boson Decays at the ILC with the SiD Detector (A Snowmass White Paper)
论文作者
论文摘要
在粒子物理的标准模型（SM）中，希格斯玻色子的分支比率衰减到最终状态，对撞机检测器看不见，$ h \ rightarrow zz^{\ star} \rightArrowν\ barbarν\barννν\barν$是0.10％的订单。在SM（BSM）以外的理论中，可以通过腐烂与未发现的粒子（如暗物质（DM））来增强该分支比率。在大型强子对撞机（LHC）上，当前的最佳上限是，无形Higgs玻色子衰变的分支比率为95％的置信度为11％。我们研究了国际线性对撞机（ILC）对硅检测器（SID）对隐形希格斯衰减的预期敏感性。我们得出的结论是，在$ \ sqrt {s} = 250 $ gev，900 fb $^{ - 1} $集成的光度为$ e_ {l}^ - e_ {r}^ - e_ {r}^+$ and $ e_ {r}^ - e_ {l}^ - e_ {l}^+$ plortactions limitive pollimative ins the the limitive ins the limition the Expict ins the the Expiction ins the Is the Expict ins the IS 0.6％。
In the Standard Model (SM) of particle physics, the branching ratio for Higgs boson decays to a final state which is invisible to collider detectors, $H \rightarrow ZZ^{\star} \rightarrow ν\barν ν\barν$, is order 0.10%. In theories beyond the SM (BSM), this branching ratio can be enhanced by decays to undiscovered particles like dark matter (DM). At the Large Hadron Collider (LHC), the current best upper limit on the branching ratio of invisible Higgs boson decays is 11% at 95% confidence level. We investigate the expected sensitivity to invisible Higgs decays with the Silicon Detector (SiD) at the International Linear Collider (ILC). We conclude that at $\sqrt{s}=250$ GeV with 900 fb$^{-1}$ integrated luminosity each for $e_{L}^-e_{R}^+$ and $e_{R}^-e_{L}^+$ at nominal beam polarization fractions, the expected upper limit is 0.16% at 95% confidence level.
