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arXiv 1609.06115hep-phhep-ex
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自旋$J \leq 4$排斥$\overline{B} \to X_J \ell_1 \ell_2$衰变的角分析

Angular analyses of exclusive $\overline{B} \to X_J \ell_1 \ell_2$ decays for spin $J \leq 4$

Biplab Dey

摘要:

作为对我们以前对自旋$J\leq2$的计算的一个更新,我们给出了$\overline{B} \to X_J \ell_1 \ell_2$的角动量,其中$\ell_1$是一个带电的无质量轻子,$\ell_2$是一个带电的或中性的无质量轻子,$X_J$是一个自旋为$J\leq4$的介子系统.预期的应用包括在运行~II的LHCb的$\overline{B}^0 \to K^- π^+ μ^- μ^+$中的$[Kπ]$系统中以及在Belle~II的$ \overline{B} \to ππ\ell^- \barν_\ell$的$[ππ]$系统中的更高共振。对于$J\leq2$的情况下,我们还提供了一组测量的时刻观测值之间的一致性关系,并验证它们对LHCb的最新测量。

英文摘要:

As an update to our previous calculation for spin $J\leq2$, we present the angular moments for exclusive $\overline{B} \to X_J \ell_1 \ell_2$, where $\ell_1$ is a charged massless lepton and $\ell_2$ is a charged or neutral massless lepton, and $X_J$ is a mesonic system with spin $J\leq4$. The expected applications include higher resonances in the $[Kπ]$ system in $\overline{B}^0 \to K^- π^+ μ^- μ^+$ at LHCb in Run~II, and in the $[ππ]$ system for $ \overline{B} \to ππ\ell^- \barν_\ell$ at Belle~II. For the $J\leq2$ case, we also provide a set of consistency relations among the measured moments observables and validate them against the latest measurements from LHCb.

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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