B c meson and its scalar cousin with QCD sum rules* * Supported by the National Natural Science Foundation, China (12175068)

IF 3.6 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

中国物理C Pub Date : 2024-10-01 DOI:10.1088/1674-1137/ad5a71

Zhi-Gang Wang

引用次数: 0

Abstract

In this study, we use the optical theorem to calculate the next-to-leading order corrections to the QCD spectral densities directly in the QCD sum rules for the pseudoscalar and scalar B _c mesons. We use experimental data for guidance to perform an updated analysis. We obtain the masses and, in particular, decay constants, which are the fundamental input parameters in high energy physics. Ultimately, we obtain the pure leptonic decay widths, which can be compared with experimental data in the future.

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B c介子及其标量表亲与 QCD 和规则* * 国家自然科学基金资助项目(12175068)

在这项研究中，我们利用光学定理直接计算了伪标量和标量Bc介子在QCD和则中对QCD谱密度的次先导阶修正。我们以实验数据为指导进行了更新分析。我们获得了质量，特别是衰变常数，它们是高能物理的基本输入参数。最终，我们得到了纯轻子衰变宽度，这可以在未来与实验数据进行比较。

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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来源期刊

中国物理C 物理-物理：核物理

CiteScore

6.50

自引率

8.30%

发文量

8976

审稿时长

1.3 months

期刊介绍： Chinese Physics C covers the latest developments and achievements in the theory, experiment and applications of: Particle physics; Nuclear physics; Particle and nuclear astrophysics; Cosmology; Accelerator physics. The journal publishes original research papers, letters and reviews. The Letters section covers short reports on the latest important scientific results, published as quickly as possible. Such breakthrough research articles are a high priority for publication. The Editorial Board is composed of about fifty distinguished physicists, who are responsible for the review of submitted papers and who ensure the scientific quality of the journal. The journal has been awarded the Chinese Academy of Sciences ‘Excellent Journal’ award multiple times, and is recognized as one of China''s top one hundred key scientific periodicals by the General Administration of News and Publications.