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New physics in b → se+e−: A model independent analysis
Nuclear Physics B ( IF 2.5 ) Pub Date : 2021-05-07 , DOI: 10.1016/j.nuclphysb.2021.115419
Ashutosh Kumar Alok , Suman Kumbhakar , Jyoti Saini , S. Uma Sankar

The lepton universality violating flavor ratios RK/RK indicate new physics either in bsμ+μ or in bse+e or in both. If the new physics is only bse+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 bse+e decay by considering effective operators either one at a time or two similar operators at a time. We include all the measurements in bse+e sector along with RK/RK in our analysis. We show that various new physics scenarios with vector/axial-vector operators can account for RK/RK data but those with scalar/pseudoscalar operators and with tensor operators can not. We also show that the azimuthal angular observable P1 in BKe+e decay is most suited to discriminate between the different allowed solutions.



中文翻译:

b  →  se + e −中的新物理学:独立于模型的分析

轻子普遍性违反风味比 [Rķ/[Rķ 在中指出新的物理学 bsμ+μ- 或在 bsË+Ë-或两者兼而有之。如果仅是新物理学bsË+Ë-过渡时,相应的新物理运算符原则上可以具有任何Lorentz结构。在这项工作中,我们仅在以下方面对新物理学进行模型独立的分析bsË+Ë-通过一次考虑一个有效算子或一次考虑两个类似算子来衰减。我们将所有测量值包括在bsË+Ë- 部门以及 [Rķ/[Rķ在我们的分析中。我们证明了带有矢量/轴向矢量算子的各种新的物理场景可以说明[Rķ/[Rķ数据,但那些具有标量/伪标量运算符和张量运算符的数据则不能。我们还表明可观察到的方位角P1个ķË+Ë- 衰减最适合区分不同的允许解。

更新日期:2021-05-11
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