The q2 moments in inclusive semileptonic B decays

A bstract 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 α s 2 β 0 BLM contributions. We then include the q 2 -moments recently measured by Belle an...

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Bibliographic Details
Published in:The journal of high energy physics 2024-02, Vol.2024 (2), p.206, Article 206
Main Authors: Finauri, G., Gambino, P.
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Elementary Particles
Kinematics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Regular Article - Theoretical Physics
Relativity Theory
String Theory
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Summary:A bstract 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 α s 2 β 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) × 10 − 3 .
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP02(2024)206