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arXiv 1808.01419hep-phhep-ex
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$R_{D^{(\ast)}}$反常的R-奇偶破坏解及其GUT尺度统一

R-parity violating solutions to the $R_{D^{(\ast)}}$ anomaly and their GUT-scale unifications

Quan-Yi Hu, Xin-Qiang Li, Yu Muramatsu, Ya-Dong Yang

摘要:

最近,几个$B$ -物理实验报告了$B$ -介子半轻子衰变中有趣的异常,例如$R_{D^{(\ast)}}$测量中的过量。这些异常似乎暗示了轻子味非普适性的有趣暗示,而R宇称破坏(RPV)相互作用是解释这种非普适性的候选者。本文在大统一理论假设下讨论了RPV相互作用对解决$R_{D^{(\ast)}}$反常的作用。为了解决$R_{D^{(\ast)}}$异常,已知需要大的RPV耦合和大约$1~{\rm TeV}$的费米子质量。同时,大的RPV耦合有利于实现大统一模型中出现的底τ汤川统一。另一方面,在约束最小超对称标准模型中,实现有利的sfermion质量存在问题。为了解决这些问题,我们证明了两个非普适性,非普适sfermion质量和非普适gaugino质量,是有利的。

英文摘要:

Recently, several $B$-physics experiments report interesting anomalies in the semi-leptonic decays of $B$-mesons, such as the excess in the $R_{D^{(\ast)}}$ measurements. These anomalies seem to suggest intriguing hints of lepton flavor non-universality, and the R-parity violating (RPV) interactions are candidates for explaining this non-universality. In this paper, we discuss the RPV interactions for resolving the $R_{D^{(\ast)}}$ anomaly with the Grand Unified Theory (GUT) assumption. To solve the $R_{D^{(\ast)}}$ anomaly, it is known that large RPV couplings and around $1~{\rm TeV}$ sfermion masses are required. At the same time, large RPV couplings are conducive to realize the bottom-tau Yukawa unification which appears in the GUT models. On the other hand, there are problems for realizing favorable sfermion masses in the constrained minimal supersymetric standard model. To resolve these problems, we show that two non-universalities, the non-universal sfermion masses and the non-universal gaugino masses, are favorable.

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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