论文标题

在LHC搜索Higgsino-Bino领域

Searching for the Higgsino-Bino Sector at the LHC

论文作者

Liu, Jia, McGinnis, Navin, Wagner, Carlos E. M., Wang, Xiao-Ping

论文摘要

在重型标量超级方案的情况下,我们研究了13 TEV LHC的Electroweakinos的搜索。我们考虑了直接生产模式和与重型希格斯玻色子的衰变相关的模式,并集中在光希格西诺斯和binos的情况下。在这种情况下,直接生产搜索比在轻微的Wino场景中更具挑战性。在直接生产模式下,我们使用当前的实验搜索在较大的亮度下为这些颗粒设定覆盖范围,并强调考虑第二和第三lightalino的中性和第三个中性甲的中性骨和中性希格斯衰减模式的相关性。我们展示了这些搜索的互补性与重型希格斯玻色子的衰变所引起的搜索,这些探测是由第二和第三最轻的中性尼利诺的相关产生的主要产生,后者腐烂到仪表玻色子中。我们表明,根据$ \tanβ$的价值,希格斯玻色子衰变通道与直接生产渠道保持竞争力,直至大约1 TEV的重型Higgs玻色子群。此外,这种搜索不受与直接生产模式下的运动学相同的考虑的限制,并且可以将质量覆盖至运动阈值,从而使较重的电动eakinos衰减到最轻的中性诺中。这种衰减模式还提供了一种在这一范围内寻找沉重的希格斯玻色子的替代方法,因此对于将来的LHC分析来说应该是一个很高的优先事项。

We study the search for electroweakinos at the 13 TeV LHC in the case of heavy scalar superpartners. We consider both the direct production mode and the one associated with the decay of heavy Higgs bosons, and concentrate on the case of light Higgsinos and Binos. In this case, the direct production searches becomes more challenging than in the light Wino scenario. In the direct production mode, we use the current experimental searches to set the reach for these particles at larger luminosities, and we emphasize the relevance of considering both the neutral gauge boson and the neutral Higgs decay modes of the second and third lightest neutralino. We show the complementarity of these searches with the ones induced by the decay of the heavy Higgs bosons, which are dominated by the associated production of the lightest neutralino with the second and third lightest ones, with the latter decaying into gauge bosons. We show that, depending on the value of $\tanβ$, the Higgs boson decay channel remains competitive with the direct production channel up to heavy Higgs boson masses of about 1 TeV. Moreover, this search is not limited by the same kinematic considerations as the ones in the direct production mode and can cover masses up to the kinematic threshold for the decay of the heavier electroweakinos into the lightest neutralino. This decay mode provides also an alternative way of looking for heavy Higgs bosons in this range of masses and hence should be a high priority for future LHC analyses.

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