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arXiv 1508.03255hep-ph
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探索CP违反的NMSSM:EDM约束和现象学

Exploring the CP-violating NMSSM: EDM Constraints and Phenomenology

S. F. King, M. Muhlleitner, R. Nevzorov, K. Walz

摘要:

标准模型的次最小超对称扩展(NMSSM)具有额外的CP破坏的新来源。与MSSM相反,CP破坏已经可以发生在希格斯扇区的树级。我们调查的范围内可能允许CP违反相考虑到所产生的电偶极子矩(EDM)的测量和最新的LHC希格斯数据的约束。我们的分析表明,大CP违反阶段,这是NMSSM特定的,是不冲突的EDM。在这种情况下,它们主要受到希格斯数据的约束。我们使用我们的研究结果来调查的前景,测量CP破坏,一方面通过希格斯率的联合测量,并在观测的基础上CP破坏希格斯耦合到τ轻子。

英文摘要:

The Next-to-Minimal Supersymmetric extension of the Standard Model (NMSSM) features extra new sources for CP violation. In contrast to the MSSM CP violation can already occur at tree level in the Higgs sector. We investigate the range of possible allowed CP-violating phases by taking into account the constraints arising from the measurements of the Electric Dipole Moments (EDMs) and the latest LHC Higgs data. Our analysis shows that large CP-violating phases, that are NMSSM-specific, are not in conflict with the EDMs. They are dominantly constrained by the Higgs data in this case. We use our results to investigate the prospects of measuring CP violation through the combined measurement of Higgs rates, on the one hand, and in observables based on CP-violating Higgs couplings to tau leptons on the other hand.

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