B c meson and its scalar cousin with QCD sum rules

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 part...

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Bibliographic Details
Published in:Chinese physics C 2024-10, Vol.48 (10), p.103104
Main Author: Wang 王, Zhi-Gang 志刚
Format: Article
Language:English
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Summary: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.
ISSN:1674-1137
2058-6132
DOI:10.1088/1674-1137/ad5a71