Study of ■ decays within QCD factorization framework

• 1:betway官方app 物理学院

QCD因子化框架下B-_(d,s)→D_(d,s)P衰变过程的研究.pdf

摘要(Abstract)：

在考虑幂次压低且不忽略c夸克和D介子质量的条件下，采用光前夸克模型结果作为输入，在QCD因子化（QCDF）框架下给出了■中旁观者和湮灭图的贡献大小．旨在解释这两个衰变道中理论预言与实验测量存在4σ～5σ偏差的问题．研究结果表明，旁观者和湮灭图贡献对这一偏差有一定的改善，但理论与实验之间的偏差仍然比较明显．
In this paper,we use the results of the light-front quark model as the input under the condition of power suppressed without neglecting the masses of c quark and D meson,The contributions of spectator scattering and weak annihilation amplitudes in ■are given under the framework of QCD Factorization.The purpose of this work is to explain the 4σ-5σ deviation between theoretical prediction and experimental measurement in these two decay channels.The results show that the contribution of spectator scattering and weak annihilation amplitudes can improve this deviation to some extent,but the deviation between theory and experiment is still obvious.

关键词(KeyWords)：QCD因子化;D介子;光前夸克模型;湮灭
QCD Factorization;D meson;light-front quark model;annihilation

基金项目(Foundation):国家自然科学基金(12275067);; 河南省高等学校重点科研项目(23A140012)

作者(Authors):常钦;赵萌非;陈丽丽;王晓琳;
Chang Qin;Zhao Mengfei;Chen Lili;Wang Xiaolin;School of Physics, Henan Normal University;

DOI:10.16366/j.cnki.1000-2367.2023.04.002

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