B¯→D(*)ℓX¯ decays in effective field theory with massive right-handed neutrinos
B¯→D(*)ℓX¯ decays in effective field theory with massive right-handed neutrinos
复制标题
B���D(*)�X�在有效场论中伴随大量右旋中微子衰变
DOI：
10.1103/physrevd.106.l011702
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发表时间：
2022
影响因子：
5
通讯作者：
Marfatia, Danny
中科院分区：
文献类型：
--
作者：
Datta, Alakabha;Liu, Hongkai;Marfatia, Danny
在低能有效场理论框架下，计算了介子衰变到大质量右手中微子的全微分衰变分布。我们发现，一个大质量的RH中微子并没有引入任何新的角结构相比，无质量的情况下，但可以导致显着的扭曲角观测。研究了RH中微子扩展的标准模型有效场论（SMNEFT）所允许的低能四费米子算符的唯象。我们表明，为了解释正向-反向不对称性的差值为正值，根据贝儿的数据，RH中微子必须是大质量的。我们还预测fordependent角度观测激励未来的测量。
We calculate the complete differential decay distributions for themeson decays,, to a massive right-handed (RH) neutrino in the low-energy effective field theory (LEFT) framework. We find that a massive RH neutrino does not introduce any new angular structures compared to the massless case, but can cause significant distortions in angular observables. We study the phenomenology of low-energy four-fermion operators permitted by the standard model effective field theory (SMEFT) extended with RH neutrinos (SMNEFT). We show that to explain the positive value of the difference in forward-backward asymmetries,, tentatively inferred from Belle data, the RH neutrino must be massive. We also make predictions fordependent angular observables to motivate future measurements.