The q2 moments in inclusive semileptonic B decays

被引：13

作者：

Finauri, G. ^{[1
]}

Gambino, P. ^{[1
,2
,3
,4
]}

机构：

[1] Tech Univ Munich, Phys Dept T31, James Franck Str 1, D-85748 Garching, Germany

[2] Univ Torino, Dip Fis, Via Giuria 1, I-10125 Turin, Italy

[3] INFN, Sez Torino, Via Giuria 1, I-10125 Turin, Italy

[4] Max Planck Inst Phys & Astrophys, Fohringer Ring 6, D-80805 Munich, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 2024卷 / 02期

关键词：

Bottom Quarks; CKM Parameters; Semi-Leptonic Decays; DISTRIBUTIONS;

D O I：

10.1007/JHEP02(2024)206

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We compute the first moments of the q(2) distribution in inclusive semileptonic B decays as functions of the lower cut on q(2), confirming a number of results given in the literature and adding the O(alpha(2)(s)beta(0)) BLM contributions. We then include the q(2)-moments recently measured by Belle and Belle II in a global fit to the moments. The new data are compatible with the other measurements and slightly decrease the uncertainty on the nonperturbative parameters and on |V-cb|. Our updated value is |V-cb| = (41.97 +/- 0.48) x 10(-3).

引用

页数：23

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