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arXiv 2006.15217hep-ph
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极小$R$对称模型中色八位标量参数空间的探索

Exploring color-octet scalar parameter space in minimal $R$-symmetric models

Linda M. Carpenter, Taylor Murphy, Matthew J. Smylie

摘要:

在这项工作中,我们研究了色八隅标量(胶子)在最小的超对称模型赋予一个全球连续$R$对称性的碰撞机现象。我们系统地编目标量和赝标量胶子的重要衰变通道,并确定这些模型中自然的新功能。这些包括非标准双玻色子通道中的衰变,例如胶子和光子;具有相当大分支分数的三体衰变;以及具有位移顶点签名的长寿命粒子。我们还讨论了这些粒子的单个和成对生产,并表明它们可以在不同程度上逃避大型强子对撞机的现有约束,在合理的参数空间的大区域。我们发现,例如,725 GeV的标量和350 GeV或更轻的赝标量仍然可以容纳在现实的情况下。

英文摘要:

In this work we study the collider phenomenology of color-octet scalars (sgluons) in minimal supersymmetric models endowed with a global continuous $R$ symmetry. We systematically catalog the significant decay channels of scalar and pseudoscalar sgluons and identify novel features that are natural in these models. These include decays in nonstandard diboson channels, such as to a gluon and a photon; three-body decays with considerable branching fractions; and long-lived particles with displaced vertex signatures. We also discuss the single and pair production of these particles and show that they can evade existing constraints from the Large Hadron Collider, to varying extents, in large regions of reasonable parameter space. We find, for instance, that a 725 GeV scalar and a 350 GeV or lighter pseudoscalar can still be accommodated in realistic scenarios.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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