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arXiv 2003.08443hep-ph
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LHC高能升级的左右超对称选择

The left-right supersymmetric option at a high-energy upgrade of the LHC

Mariana Frank, Benjamin Fuks, Katri Huitu, Subhadeep Mondal, Santosh Kumar Rai, Harri Waltari

摘要:

我们调查的可能性,一个最小的实现左右超对称性可以达到在一个高能量的升级的大型强子对撞机,预计在27 TeV的质心能量。这种最小的情况有一个相对较轻的双电荷希格斯玻色子$SU(2)_R$,它可以主要衰变成τ轻子对。我们探讨了相关的信号组成的至少三个强子衰变τ,或至少有两个强子τ和一个同号同味带电轻子对。我们的分析表明,前一个签名是具有挑战性的,用于获得处理的信号,由于大的相应的背景,而后者可以导致一些新的物理事件在一个几乎无背景的环境。然而,我们发现,由三个强子衰变的τ轻子的信号很可能被观察到在低光度的质子-质子碰撞在27 TeV的LHC升级。

英文摘要:

We investigate the possibility that a minimal realization of left-right supersymmetry can be reachable at a high-energy upgrade of the LHC, expected to operate at a center-of-mass energy of 27 TeV. This minimal scenario has a relatively light $SU(2)_R$ doubly-charged Higgs boson, which could decay dominantly into tau-lepton pairs. We explore the associated signals comprised of at least three hadronically-decaying taus, or with at least two hadronic taus and one same-sign-same-flavor charged lepton pair. Our analysis shows that the former signature is challenging to use for getting handles on the signal due to the large corresponding background, and that the latter one can lead to a handful of new physics events in an almost background-free environment. We however find that a signal comprised of three hadronically-decaying tau leptons is likely to be observed at a low luminosity of proton-proton collisions at a 27 TeV upgrade of the LHC.

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