在$τ$到1-prong衰变通道中确定希格斯玻色子在LHC上的CP宇称
Determining the CP parity of Higgs bosons at the LHC in the $τ$ to 1-prong decay channels
摘要：
我们提出了一种方法来确定中性希格斯玻色子或自旋零共振$ϕ$在欧洲核子研究中心大型强子对撞机（LHC）在其$ϕ\toτ^{-}τ^{+}$衰变通道的CP性质。该方法可以应用于任何1-prong $τ$ -衰变模式，其中包括大多数的$τ$ -轻子衰变。建议的观测值允许区分纯标量和赝标量希格斯玻色子状态和/或CP守恒和CP违反希格斯扇区之间。我们表明，衰变$τ\toπν_τ$的方法保持其鉴别能力时，考虑到测量的不确定性。该方法也适用于未来的线性$e^{+}e^{-}$对撞机。
英文摘要：
We propose a method for determining the CP nature of a neutral Higgs boson or spin-zero resonance $ϕ$ at the CERN Large Hadron Collider (LHC) in its $ϕ\toτ^{-}τ^{+}$ decay channel. The method can be applied to any 1-prong $τ$-decay mode, which comprise the majority of the $τ$-lepton decays. The proposed observables allow to discriminate between pure scalar and pseudoscalar Higgs-boson states and/or between a CP-conserving and CP-violating Higgs sector. We show for the decays $τ\toπν_τ$ that the method maintains its discriminating power when measurement uncertainties are taken into account. The method will be applicable also at a future linear $e^{+}e^{-}$ collider.
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