Systematic analysis of D(s) meson semi-leptonic decays in the covariant light-front quark model.
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| Title: | Systematic analysis of D(s) meson semi-leptonic decays in the covariant light-front quark model. |
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| Authors: | Yang, Hao1 (AUTHOR), Guo, Shao-Qin1 (AUTHOR), Zhang, Zhi-Qing1 (AUTHOR) zhangzhiqing@haut.edu.cn |
| Source: | European Physical Journal C -- Particles & Fields. Apr2026, Vol. 86 Issue 4, p1-26. 26p. |
| Subjects: | Meson decay, Mesons, Standard model (Nuclear physics), Branching ratios, Quark models, Particle physics |
| Abstract: | The weak decays of the D (s) meson provide a pivotal platform to advance our understanding of the Standard Model (SM) and to explore New Physics (NP). In recent years, experiments have collected a significant amount of data on the D (s) meson decays, particularly from BESIII, which provides substantial support for theoretical research. In this work, we systematically investigate the semi-leptonic decays of D (s) meson to pseudoscalar (P), scalar (S), vector (V), and axial-vector (A) mesons within the framework of the covariant light-front quark model (CLFQM). We calculate the form factors of the transitions D (s) → P , S , V , A and the branching ratios of the corresponding semi-leptonic decays, then compare them with experimental data and results from other theoretical models. The form factor values of the transitions D (s) → P , V obtained from the CLFQM are consistent with those of other theoretical models and available data in most cases. However, significant discrepancies are found in some specific D (s) → S , A transitions, such as D → a 0 (980) , a 0 (1450) and D (s) → K 1 B , compared to other theoretical calculations. The predicted branching ratios for the semi-leptonic decays D → P (V) ℓ ν ℓ with ℓ = e , μ agree well with experimental data and other theoretical results in most decay channels, validating the reliability of the model. However, for some D → S (V) ℓ ν ℓ decays, tension exists among different theoretical predictions and experimental results. Further clarification of such differences is necessary. Our study provides important insights into the internal structures for some scalar and axial-vector mesons and serves as a theoretical reference for future experiments. [ABSTRACT FROM AUTHOR] |
| Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: Systematic analysis of D(s) meson semi-leptonic decays in the covariant light-front quark model. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yang%2C+Hao%22">Yang, Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guo%2C+Shao-Qin%22">Guo, Shao-Qin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhi-Qing%22">Zhang, Zhi-Qing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangzhiqing@haut.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Apr2026, Vol. 86 Issue 4, p1-26. 26p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Meson+decay%22">Meson decay</searchLink><br /><searchLink fieldCode="DE" term="%22Mesons%22">Mesons</searchLink><br /><searchLink fieldCode="DE" term="%22Standard+model+%28Nuclear+physics%29%22">Standard model (Nuclear physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Branching+ratios%22">Branching ratios</searchLink><br /><searchLink fieldCode="DE" term="%22Quark+models%22">Quark models</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+physics%22">Particle physics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The weak decays of the D (s) meson provide a pivotal platform to advance our understanding of the Standard Model (SM) and to explore New Physics (NP). In recent years, experiments have collected a significant amount of data on the D (s) meson decays, particularly from BESIII, which provides substantial support for theoretical research. In this work, we systematically investigate the semi-leptonic decays of D (s) meson to pseudoscalar (P), scalar (S), vector (V), and axial-vector (A) mesons within the framework of the covariant light-front quark model (CLFQM). We calculate the form factors of the transitions D (s) → P , S , V , A and the branching ratios of the corresponding semi-leptonic decays, then compare them with experimental data and results from other theoretical models. The form factor values of the transitions D (s) → P , V obtained from the CLFQM are consistent with those of other theoretical models and available data in most cases. However, significant discrepancies are found in some specific D (s) → S , A transitions, such as D → a 0 (980) , a 0 (1450) and D (s) → K 1 B , compared to other theoretical calculations. The predicted branching ratios for the semi-leptonic decays D → P (V) ℓ ν ℓ with ℓ = e , μ agree well with experimental data and other theoretical results in most decay channels, validating the reliability of the model. However, for some D → S (V) ℓ ν ℓ decays, tension exists among different theoretical predictions and experimental results. Further clarification of such differences is necessary. Our study provides important insights into the internal structures for some scalar and axial-vector mesons and serves as a theoretical reference for future experiments. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1140/epjc/s10052-026-15484-8 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 26 StartPage: 1 Subjects: – SubjectFull: Meson decay Type: general – SubjectFull: Mesons Type: general – SubjectFull: Standard model (Nuclear physics) Type: general – SubjectFull: Branching ratios Type: general – SubjectFull: Quark models Type: general – SubjectFull: Particle physics Type: general Titles: – TitleFull: Systematic analysis of D(s) meson semi-leptonic decays in the covariant light-front quark model. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yang, Hao – PersonEntity: Name: NameFull: Guo, Shao-Qin – PersonEntity: Name: NameFull: Zhang, Zhi-Qing IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 14346044 Numbering: – Type: volume Value: 86 – Type: issue Value: 4 Titles: – TitleFull: European Physical Journal C -- Particles & Fields Type: main |
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