QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons
Abstract We calculate the weak decay form factors of doubly-heavy baryons using three-point QCD sum rules. The Cutkosky rules are used to derive the double dispersion relations. We include perturbative contributions and condensation contributions up to dimension five, and point out that the perturba...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2020-06-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-8096-2 |
| _version_ | 1818283322344734720 |
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| author | Yu-Ji Shi Wei Wang Zhen-Xing Zhao |
| author_facet | Yu-Ji Shi Wei Wang Zhen-Xing Zhao |
| author_sort | Yu-Ji Shi |
| collection | DOAJ |
| description | Abstract We calculate the weak decay form factors of doubly-heavy baryons using three-point QCD sum rules. The Cutkosky rules are used to derive the double dispersion relations. We include perturbative contributions and condensation contributions up to dimension five, and point out that the perturbative contributions and condensates with lowest dimensions dominate. An estimate of a part of the gluon–gluon condensates show that it plays a less important role. With these form factors at hand, we present a phenomenological study of semileptonic decays. The future experimental facilities can test these predictions, and deepen our understanding of the dynamics in the decays of doubly-heavy baryons. |
| first_indexed | 2024-12-13T00:35:02Z |
| format | Article |
| id | doaj.art-fbdccdb44eb145479ce5f5be8e74c9e5 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-13T00:35:02Z |
| publishDate | 2020-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-fbdccdb44eb145479ce5f5be8e74c9e52022-12-22T00:05:14ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-06-0180612010.1140/epjc/s10052-020-8096-2QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy BaryonsYu-Ji Shi0Wei Wang1Zhen-Xing Zhao2INPAC, SKLPPC, School of Physics and Astronomy, Shanghai Jiao Tong UniversityINPAC, SKLPPC, School of Physics and Astronomy, Shanghai Jiao Tong UniversityINPAC, SKLPPC, School of Physics and Astronomy, Shanghai Jiao Tong UniversityAbstract We calculate the weak decay form factors of doubly-heavy baryons using three-point QCD sum rules. The Cutkosky rules are used to derive the double dispersion relations. We include perturbative contributions and condensation contributions up to dimension five, and point out that the perturbative contributions and condensates with lowest dimensions dominate. An estimate of a part of the gluon–gluon condensates show that it plays a less important role. With these form factors at hand, we present a phenomenological study of semileptonic decays. The future experimental facilities can test these predictions, and deepen our understanding of the dynamics in the decays of doubly-heavy baryons.http://link.springer.com/article/10.1140/epjc/s10052-020-8096-2 |
| spellingShingle | Yu-Ji Shi Wei Wang Zhen-Xing Zhao QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons European Physical Journal C: Particles and Fields |
| title | QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons |
| title_full | QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons |
| title_fullStr | QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons |
| title_full_unstemmed | QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons |
| title_short | QCD Sum Rules Analysis of Weak Decays of Doubly-Heavy Baryons |
| title_sort | qcd sum rules analysis of weak decays of doubly heavy baryons |
| url | http://link.springer.com/article/10.1140/epjc/s10052-020-8096-2 |
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