论文标题
违反$ b \ to k^*_ 2（1430）μ^{\ pm}τ^{\ mp} $衰减的Lepton风味
Lepton Flavor Violating $B\to K^*_2(1430)μ^{\pm}τ^{\mp}$ Decays
论文作者
论文摘要
半乳房$ b \ to s $和$ b \ to c $ trantitions在这两个部门中可能作用的可能作用的许多衰减中的许多测量值。由这些异常动机，我们调查了违反$ b \ to k^*_ 2（1430）μ^{\ pm}τ^{\ mp} $衰减的Lepton风味。我们计算$ b \ to k^*_ 2 \ ell_1 \ ell_2 $衰减的两倍分布在矢量，轴向矢量，标量和pseudo-scalar新物理相互作用的情况下。然后，我们在$ u^{2/3} _1 $ vector leptoquark的框架中计算分支分数和Lepton向前不对称，这是当前$ B $异常的可行解决方案。我们发现上限为$ \ MATHCAL {B}（b \ to K^*_2μ^ - τ^+）\ Leq 1.64 \ times 10^{ - 7} $和$ \ Mathcal {b}（b \ b \ b \ to K^*_2μ^+τ^+τ^ - ）
A number of measurements in decays induced by the semileptonic $b\to s$ and $b\to c$ transitions hint towards a possible role of new physics in both sectors. Motivated by these anomalies, we investigate the lepton flavor violating $B\to K^*_2 (1430)μ^{\pm}τ^{\mp}$ decays. We calculate the two-fold angular distribution of $B\to K^*_2\ell_1\ell_2$ decay in presence of vector, axial-vector, scalar and pseudo-scalar new physics interactions. We then compute the branching fraction and lepton forward-backward asymmetry in the framework of $U^{2/3}_1$ vector leptoquark which is a viable solution to the current $B$ anomalies. We find that the upper limits are $\mathcal{B}(B\to K^*_2μ^-τ^+)\leq 1.64\times 10^{-7}$ and $\mathcal{B}(B\to K^*_2μ^+τ^-)\leq 0.60\times 10^{-7}$ at $90\%$ C.L.
