QCD light-cone distribution amplitudes of heavy mesons from boosted HQET
Abstract Light-cone distribution amplitudes (LCDAs) frequently arise in factorization theorems involving light and heavy mesons. The QCD LCDA for heavy mesons includes short-distance physics at energy scales of the heavy-quark mass. In this paper we achieve the separation of this perturbative scale...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-09-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP09(2023)066 |
| _version_ | 1827394691374514176 |
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| author | Martin Beneke Gael Finauri K. Keri Vos Yanbing Wei |
| author_facet | Martin Beneke Gael Finauri K. Keri Vos Yanbing Wei |
| author_sort | Martin Beneke |
| collection | DOAJ |
| description | Abstract Light-cone distribution amplitudes (LCDAs) frequently arise in factorization theorems involving light and heavy mesons. The QCD LCDA for heavy mesons includes short-distance physics at energy scales of the heavy-quark mass. In this paper we achieve the separation of this perturbative scale from the purely hadronic effects by matching the QCD LCDA to the convolution of a perturbative function with the universal, quark-mass independent LCDA defined in heavy-quark effective theory. This factorization allows to resum potentially large logarithms between ΛQCD and m Q as well as between m Q and the scale Q of the hard process in the production of boosted heavy mesons at colliders. As an application we derive new theoretical predictions for the branching ratio of the decay W ± → B ± γ. Furthermore, we provide phenomenological models for the QCD LCDAs of both the B ¯ $$ \overline{B} $$ and D mesons expressed as expansions in Gegenbauer polynomials. |
| first_indexed | 2024-03-08T18:16:41Z |
| format | Article |
| id | doaj.art-7b8f272c30694e7597b73308546d3b12 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-08T18:16:41Z |
| publishDate | 2023-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-7b8f272c30694e7597b73308546d3b122023-12-31T12:06:55ZengSpringerOpenJournal of High Energy Physics1029-84792023-09-012023915410.1007/JHEP09(2023)066QCD light-cone distribution amplitudes of heavy mesons from boosted HQETMartin Beneke0Gael Finauri1K. Keri Vos2Yanbing Wei3Physik Department T31, James-Franck-Straße 1, Technische Universität MünchenPhysik Department T31, James-Franck-Straße 1, Technische Universität MünchenGravitational Waves and Fundamental Physics (GWFP), Maastricht UniversityPhysik Department T31, James-Franck-Straße 1, Technische Universität MünchenAbstract Light-cone distribution amplitudes (LCDAs) frequently arise in factorization theorems involving light and heavy mesons. The QCD LCDA for heavy mesons includes short-distance physics at energy scales of the heavy-quark mass. In this paper we achieve the separation of this perturbative scale from the purely hadronic effects by matching the QCD LCDA to the convolution of a perturbative function with the universal, quark-mass independent LCDA defined in heavy-quark effective theory. This factorization allows to resum potentially large logarithms between ΛQCD and m Q as well as between m Q and the scale Q of the hard process in the production of boosted heavy mesons at colliders. As an application we derive new theoretical predictions for the branching ratio of the decay W ± → B ± γ. Furthermore, we provide phenomenological models for the QCD LCDAs of both the B ¯ $$ \overline{B} $$ and D mesons expressed as expansions in Gegenbauer polynomials.https://doi.org/10.1007/JHEP09(2023)066Bottom QuarksEffective Field TheoriesResummationRare Decays |
| spellingShingle | Martin Beneke Gael Finauri K. Keri Vos Yanbing Wei QCD light-cone distribution amplitudes of heavy mesons from boosted HQET Journal of High Energy Physics Bottom Quarks Effective Field Theories Resummation Rare Decays |
| title | QCD light-cone distribution amplitudes of heavy mesons from boosted HQET |
| title_full | QCD light-cone distribution amplitudes of heavy mesons from boosted HQET |
| title_fullStr | QCD light-cone distribution amplitudes of heavy mesons from boosted HQET |
| title_full_unstemmed | QCD light-cone distribution amplitudes of heavy mesons from boosted HQET |
| title_short | QCD light-cone distribution amplitudes of heavy mesons from boosted HQET |
| title_sort | qcd light cone distribution amplitudes of heavy mesons from boosted hqet |
| topic | Bottom Quarks Effective Field Theories Resummation Rare Decays |
| url | https://doi.org/10.1007/JHEP09(2023)066 |
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