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arXiv 2403.08720hep-ph
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将95 GeV双光子/$b\ar{b}$超出解释为MRSSM的最轻Higgs玻色子

Interpreting 95 GeV di-photon/$b\bar{b}$ excesses as a lightest Higgs boson of the MRSSM

Jan Kalinowski, Wojciech Kotlarski

AI总结:

本文研究将约95 GeV的双光子和$b\ar{b}$超出解释为MRSSM最轻Higgs玻色子,该态同时解释LEP的$b\ar{b}$超出,并预言轻的bino-singlino Dirac暗物质候选者,为LHC Run III和暗物质实验提供可行参数区域。

摘要:

最小R对称超对称标准模型(MRSSM)是一个动机良好的BSM模型,它能够容纳观测到的125 GeV Higgs玻色子,并与电弱精密观测量(特别是$W$玻色子质量和$T$参数)保持一致。在2016年的论文中,我们展示了类SM的125 GeV Higgs态也可以实现为MRSSM的次轻标量,从而为另一个低于100 GeV的态留出空间。受近期ATLAS和CMS在约95 GeV质量处观测到的双光子超出的启发,我们研究了这一超出是否可能是我们2016年工作中提出的基准点变体中的最轻CP偶MRSSM标量。我们表明,这样的态还可以同时解释LEP在相同质量附近观测到的$b\ar{b}$终态超出。由于模型的R对称性质,一个轻的单态类Higgs态必然导致一个轻的bino-singlino Dirac暗物质候选者,它可以在规避当前实验约束的同时给出正确的 relic 密度。暗物质和LHC搜索进一步对该情景施加了约束,并指出了对LHC Run III和即将进行的暗物质实验而言可行且感兴趣的参数区域。

英文摘要:

The Minimal R-symmetric Supersymmetric Standard Model (MRSSM) is a well motivated BSM model which can accommodate the observed 125 GeV Higgs boson in agreement with electroweak precision observables, in particular with the $W$ boson mass and $T$ parameter. In the 2016 paper we showed that the SM-like 125 GeV Higgs state can be also realised as the second-to-lightest scalar of the MRSSM, leaving room for another sub-100 GeV state. Motivated by the recent ATLAS and CMS observation of the di-photon excess at a mass of around 95 GeV we investigate the possibility whether this could be the lightest CP-even MRSSM scalar in a variation of our benchmarks presented in the 2016 work. We show that such a state can also simultaneously explain the excess in the $b\bar{b}$ final state observed around the same mass value at LEP. Due to the R-symmetric nature of the model, a light singlet-like Higgs state leads necessarily to a light bino-singlino Dirac dark matter candidate, which can give a correct relic density while evading current experimental bounds. Dark matter and LHC searches place further bounds on this scenario and point to parameter regions which are viable and of interest for the LHC Run III and upcoming dark matter experiments.

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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