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arXiv 1105.3097hep-ph
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大型强子对撞机上具有非普适希格斯质量的超对称性特征

Signatures of supersymmetry with non-universal Higgs mass at the Large Hadron Collider

Subhaditya Bhattacharya, Sanjoy Biswas, Biswarup Mukhopadhyaya, Mihoko M. Nojiri

摘要:

我们在大型强子对撞机(LHC)的背景下,在超对称理论的高尺度下讨论了希格斯扇区的大非普适性。特别是,我们注意到,如果${m_{H_u}}^2-{m_{H_d}}^2$是大的和负的($\simeq 10^6 {\rm ~GeV^2}$)在高尺度下,在电弱尺度下较轻的slepton质量本征态大多是左手性的,在最小超引力(mSUGRA)的情况下。我们使用这个功能来区分非普适希格斯质量(NUHM)和mSUGRA的两种方法。首先,我们研究了具有同号双态的末态。我们发现,一个不对称参数反映的Taus的偏振提供了一个显着的区别。此外,我们研究了一个电荷不对称的喷气轻子不变的质量分布,所产生的衰变链的左手征方导致轻子的前两个家庭,其中设置除了上述类型的NUHM的情况。

英文摘要:

We discuss large non-universality in the Higgs sector at high scale in supersymmetric theories, in the context of the Large Hadron Collider (LHC). In particular, we note that if ${m_{H_u}}^2-{m_{H_d}}^2$ is large and negative ($\simeq 10^6 {\rm ~GeV^2}$) at high scale, the lighter slepton mass eigenstates at the electroweak scale are mostly left chiral, in contrast to a minimal supergravity (mSUGRA) scenario. We use this feature to distinguish between non-universal Higgs masses (NUHM) and mSUGRA by two methods. First, we study final states with same-sign ditaus. We find that an asymmetry parameter reflecting the polarization of the taus provides a notable distinction. In addition, we study a charge asymmetry in the jet-lepton invariant mass distribution, arising from decay chains of left-chiral squarks leading to leptons of the first two families, which sets apart an NUHM scenario of the above kind.

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