论文标题
使用晶状体QCD和Unitarity独家半乳房$ b $ -Meson腐烂
Exclusive semileptonic $B$-meson decays using lattice QCD and unitarity
论文作者
论文摘要
我们介绍了将分散矩阵方法应用于独家分离的$ b $ -Meson衰变的结果。该方法允许以非扰动和完全独立于模型的方式来确定HADRONIC形式。从晶格结果开始，在动量转移的较大值下可用，在其整个运动学范围内的形式因素的行为是在不引入动量依赖性的任何参数化的情况下获得的。我们将重点介绍确定Cabibbo-kobayashi-maskawa矩阵元素$ \ vert v_ {cb} \ vert $和$ \ vert v_ {ub} \ vert $，通过$ b _ {（s）} \ to d _ {（s）} {（s）} {（S） \至π（k）\ellν$衰减。还将提出与这些过渡相关的Lepton风味普遍比率的新理论确定。
We present the results of the application of the Dispersion Matrix approach to exclusive semileptonic $B$-meson decays. This method allows to determine the hadronic form factors in a non-perturbative and completely model-independent way. Starting from lattice results available at large values of the momentum transfer, the behaviour of the form factors in their whole kinematical range is obtained without introducing any parameterization of their momentum dependence. We will focus on the determination of the Cabibbo-Kobayashi-Maskawa matrix elements $\vert V_{cb} \vert$ and $\vert V_{ub} \vert$ through the analysis of $B_{(s)} \to D_{(s)}^{(*)} \ell ν$ and $B_{(s)} \to π(K) \ell ν$ decays. New theoretical determinations of the Lepton Flavour Universality ratios relevant for these transitions will be also presented.
