D ? Klv semileptonic decay using lattice QCD with HISQ at physical pion masses
D ? Klv semileptonic decay using lattice QCD with HISQ at physical pion masses
复制标题
D？
DOI：
10.1051/epjconf/201817513027
复制
发表时间：
2018
影响因子：
--
通讯作者：
Chakraborty B
中科院分区：
文献类型：
--
作者：
Chakraborty B
标准模型的夸克味部分是通过Cabbibo-Kobayashi-Maskawa（CKM）矩阵的么正性检验寻找新物理效应的肥沃土壤。本文用格点QCD方法计算了D → Klv半轻子衰变的标量和矢量形状因子（包括q ~ 2 = 0的大q ~ 2区域）。通过比较格点QCD的形状因子和实验衰变率的结果，这个计算将使我们能够确定标准模型中的中心CKM矩阵元Vcs。这种形状因子的计算是在具有物理轻夸克质量的Nf = 2 + 1 + 1 MILC HISQ系综上进行的。
he quark flavor sector of the Standard Model is a fertile ground to look for new physics effects through a unitarity test of the Cabbibo-Kobayashi-Maskawa (CKM) matrix. We present a lattice QCD calculation of the scalar and the vector form factors (over a large q2 region includingq2= 0) associated with theD→Klvsemi-leptonic decay. This calculation will then allow us to determine the central CKM matrix element,Vcsin the Standard Model, by comparing the lattice QCD results for the form factors and the experimental decay rate. This form factor calculation has been performed on theNf= 2 + 1 + 1 MILC HISQ ensembles with the physical light quark masses.