论文标题
重新归一化组改进了$ m_s $和$ \ vert v_ {us} \ vert $从HADRONIC $τ$衰减确定
Renormalization group improved $m_s$ and $\vert V_{us}\vert$ determination from hadronic $τ$ decays
论文作者
论文摘要
我们确定奇怪的夸克质量（$ m_s $）和夸克混合元素$ \ vert v_ {us} \ vert $，以及他们从Cabbibbo抑制的HADRONIC $τ$衰减中的联合确定。与先前基于最佳重归其化或重新归一化组的分析相比，我们通过替换理论纵向贡献而用现象学参数化的理论纵向贡献，RGSPT系数用于Dimension-4 ADLER功能，我们改善了这种分析。改进的分析导致提取$ m_s（2 \，\ mathrm {gev}）= 98 \ pm19 \，\ mathrm {mev} $和$ \ vert v_ {us} \ vert = 0.2191 \ 0.2191 \ pm0.0043 $从rgspt方案中。
We determine the strange quark mass ($m_s$) and quark mixing element $\vert V_{us}\vert $, and their joint determination from the Cabibbo suppressed hadronic $τ$ decays in various perturbative schemes. Compared to the previous analysis based on the optimal renormalization or the renormalization group summed perturbation theory (RGSPT) scheme, we have improved this analysis by replacing the theoretical longitudinal contributions with phenomenological parametrization, and the RGSPT coefficients are used for the dimension-4 Adler functions. The improved analysis results in the extraction of $m_s(2\,\mathrm{GeV})=98\pm19\,\mathrm{MeV}$ and $\vert V_{us}\vert=0.2191\pm0.0043$ from the RGSPT scheme.
