我们可以从半光子B→D* * ν ν衰变的角微分速率中学到什么

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-01-22 DOI:10.1103/physrevd.111.013005

G. Martinelli, S. Simula, L. Vittorio

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引用次数: 0

摘要

本文提出了一种仅基于终态粒子的角分布来研究半光子B→D* _ ν _衰变的简单方法。我们的方法是模型独立的，不需要|Vcb|的知识。通过研究轻子的这种分布，对Belle和BelleII合作项目的不同数据集的结果进行比较，并对几个有趣的量进行数据和标准模型计算之间的比较。在一些实验结果和理论预测之间观察到很好的一致性。2025年由美国物理学会出版

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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What we can learn from the angular differential rates from semileptonic B→D*ℓνℓ decays

We present a simple approach to the study of semileptonic B→D*ℓνℓ decays based on the angular distributions of the final state particles only. Our approach is model independent and never requires the knowledge of |Vcb|. By studying such distributions in the case of light leptons, a comparison between results from different datasets from the Belle and BelleII Collaborations and between data and Standard Model calculations is also given for several interesting quantities. A good consistency is observed between some of the experimental results and the theoretical predictions.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.