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arXiv 1007.2944hep-ph
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B_s^0- \bar{B}_s^0混合中R宇称破坏超对称性效应的再评价

Reevaluating R-parity Violating Supersymmetry Effects in B_s^0-\bar{B}_s^0 Mixing

Ru-Min Wang, Yuan-Guo Xu, Mo-Lin Liu, Bing-Zhong Li

摘要:

最近,CDF和DANG的合作声称,在$B_s^0-\bar{B}_s^0$混合的CP破坏阶段是大的,这是相反的预期,在标准模型。如此大的相位表明新物理学对$B_s^0-\bar{B}_s^0$混合的贡献。出于这一动机,我们重新评估的限制R-宇称违反的贡献,包括重子数违反耦合之前没有考虑,混合质量矩阵元$M^s_{12}$从最近的测量$B_s^0-\bar{B}_s^0$混合。我们表明,目前的数据使我们能够把相当强的限制的幅度和弱相位的R-奇偶违反参数。其中有些界比已有的界更好,有些界是首次得到。不久的将来,在Tevatron,LHC和B工厂的实验可以缩小或揭示相关的参数空间的R宇称破坏耦合。

英文摘要:

Recently, the CDF and DØ collaborations have claimed that the CP violating phase in $B_s^0-\bar{B}_s^0$ mixing is large, which is contrary to the expectations in the Standard Model. Such a large phase suggests New Physics contributions to $B_s^0-\bar{B}_s^0$ mixing. Motivated by this, we reevaluate the constraints on R-parity violating contributions, including baryon number violating couplings not considered before, to the mixing mass matrix element $M^s_{12}$ from the recent measurements of $B_s^0-\bar{B}_s^0$ mixing. We show that present data allow us to put quite strong constraints on both the magnitudes and the weak phases of the R-parity violating parameters. Some of these bounds are better than the exciting ones, and some bounds are obtained for the first time. Near future experiments at the Tevatron, the LHC and B-factories can shrink or reveal the relevant parameter spaces of R-parity violating couplings.

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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