使用OK动作的$B_{(s)}$和$D_{(s)}$的轻子衰减

Tanmoy Bhattacharya, Benjamin J. Choi, Rajan Gupta, Yong-Chull Jang, Seungyeob Jwa, Sunkyu Lee, Weonjong Lee, J. Leem, Sungwoo Park
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引用次数: 3

摘要

本文介绍了利用粲夸克和底价夸克的oktayi - kronfeld (OK)作用对质量是非扰动调谐的$B_{(s)}$和$D_{(s)}$介子的轻子衰变常数的晶格计算的最新进展。对MILC合作生成的6个HISQ集成进行了计算,其中$N_f=2+1+1$ flavor。我们也对轻观夸克使用HISQ作用。结果表明,$f_{B_s}/f_B$和$f_{D_s}/f_D$反映了$SU(3)$风味对称性破缺,且与轴向电流的重整化常数无关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Leptonic decays of $B_{(s)}$ and $D_{(s)}$ using the OK action
We present recent progress in the lattice calculation of leptonic decay constants for $B_{(s)}$ and $D_{(s)}$ mesons using the Oktay-Kronfeld (OK) action for charm and bottom valence quarks, whose masses are tuned non-perturbatively. The calculations are done on 6 HISQ ensembles generated by the MILC collaboration with $N_f=2+1+1$ flavors. We also use the HISQ action for the light spectator quarks. Results are presented for the ratios $f_{B_s}/f_B$ and $f_{D_s}/f_D$, which reflect $SU(3)$ flavor symmetry breaking, and are independent of the renormalization constants of the axial currents.
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