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arXiv 2011.14668hep-phhep-ex
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$b\rightarrow se^+e^-$中的新物理:模型独立分析

New physics in $b\rightarrow se^+e^-$: A model independent analysis

Ashutosh Kumar Alok, Suman Kumbhakar, Jyoti Saini, S Uma Sankar

摘要:

轻子普适性违反味比$R_K/R_{K^*}$表明新的物理在$b \to s μ^+ μ^-$或在$b \to s e^+ e^-$或两者。如果新物理只是$b \to s e^+ e^-$跃迁,则相应的新物理算符原则上可以具有任意的洛伦兹结构。在这项工作中,我们进行了一个模型独立的分析新的物理只有在$b \to se^+e^-$衰变考虑有效的运营商无论是一次一个或两个类似的运营商在同一时间。在我们的分析中,我们包括了$b\rightarrow se^+e^-$扇区中的所有测量以及$R_K/R_{K^*}$。我们表明,各种新的物理方案与矢量/轴矢量运营商可以占$R_K/R_{K^*}$数据,但那些标量/赝标量运营商和张量运营商不能。我们还表明,方位角观测$P_1$在$B \to K^* e^+ e^-$衰变是最适合区分不同的允许的解决方案。

英文摘要:

The lepton universality violating flavor ratios $R_K/R_{K^*}$ indicate new physics either in $b \to s μ^+ μ^-$ or in $b \to s e^+ e^-$ or in both. If the new physics is only $b \to s e^+ e^-$ transition, the corresponding new physics operators, in principle, can have any Lorentz structure. In this work, we perform a model independent analysis of new physics only in $b \to se^+e^-$ decay by considering effective operators either one at a time or two similar operators at a time. We include all the measurements in $b\rightarrow se^+e^-$ sector along with $R_K/R_{K^*}$ in our analysis. We show that various new physics scenarios with vector/axial-vector operators can account for $R_K/R_{K^*}$ data but those with scalar/pseudoscalar operators and with tensor operators can not. We also show that the azimuthal angular observable $P_1$ in $B \to K^* e^+ e^-$ decay is most suited to discriminate between the different allowed solutions.

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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