粲偶素对$B \rightarrow K \ell^+ \ell^-的贡献：测试格上的因子分解近似
Charmonium contribution to $B \rightarrow K\ell^+\ell^-: testing the factorization approximation on the lattice
摘要：
我们报告了粲偶素对$B \rightarrow K\ell^+\ell^-$晶格贡献的研究现状。我们的晶格计算测试这种贡献的因式分解近似。为了控制人工发散的问题，我们把重点放在低$q^2$区与一个小的b夸克质量。我们还考虑到通过时间矩计算的相关四夸克算子的重整化常数。结果表明违反了因子分解近似。
英文摘要：
We report the current status of a study of charmonium contribution to $B \rightarrow K\ell^+\ell^-$ on the lattice. Our lattice calculation tests the factorization approximation for this contribution. In order to control the problem of the artificial divergence, we focus on the low $q^2$ region with a small b-quark mass. We also take into account the renormalization constants of relevant four-quark operators calculated through the temporal moments. Results suggest a violation of the factorization approximation.
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。
