Strong coupling from inclusive semileptonic decay of charmed mesons

被引：0

作者：

吴金飞 ^{[1
,2
]}

娄辛丑 ^{[1
,3
,4
]}

车逾之 ^{[1
,5
]}

李刚 ^{[1
]}

黄燕萍 ^{[1
]}

阮曼奇 ^{[1
]}

叶竞波 ^{[1
]}

机构：

[1] Institute of High Energy Physics,Chinese Academy of Sciences

[2] China Center of Advanced Science and Technology

[3] University of Texas at Dallas

[4] Center for High Energy Physics,Henan Academy of Sciences

[5] University of Chinese Academy of

来源：

Chinese Physics C | 2025年 / 49卷 / 02期

关键词：

D O I：

暂无

中图分类号：

O572.33 [介子];

学科分类号：

摘要：

In this study,we employed the heavy quark expansion model with the kinetic scheme to evaluate αS（mc2）,the strong coupling constant at the charm quark mass mc, using data on inclusive semileptonic decays of charmed mesons.Using the experimental values of the semileptonic decay widths of the D0 and the D+,the value of αs（mc2）was determined to be 0.445±0.009±0.114,where the first uncertainty is experimental and the second is systematic.This value of αs（mc2） is in good agreement with the value of αs（mc2） which calculated by running αS（mZ2） at the Z0 boson mass mZ with the renormalization group evolution equation.In addition,the values of αs（mc2） obtained individually from each of the D0,D+,and Ds+ mesons were consistent,as they were of the same origin.

引用

页码：5 / 10

页数：6

共 5 条

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