Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays
Abstract We perform a global analysis of |∆c| = |∆u| = 1 transitions using recent data on D 0 → μ + μ − , D + → π + μ + μ − , Λ c → p μ + μ − , and D 0 → π + π − μ + μ − decays, and work out constraints on new physics Wilson coefficients C 7 , 9 , 10 ′ $$ {C}_{7,9,10}^{\left(\prime \right)} $$ . Whi...
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| Format: | Article |
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SpringerOpen
2024-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP12(2024)102 |
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| author | Hector Gisbert Gudrun Hiller Dominik Suelmann |
| author_facet | Hector Gisbert Gudrun Hiller Dominik Suelmann |
| author_sort | Hector Gisbert |
| collection | DOAJ |
| description | Abstract We perform a global analysis of |∆c| = |∆u| = 1 transitions using recent data on D 0 → μ + μ − , D + → π + μ + μ − , Λ c → p μ + μ − , and D 0 → π + π − μ + μ − decays, and work out constraints on new physics Wilson coefficients C 7 , 9 , 10 ′ $$ {C}_{7,9,10}^{\left(\prime \right)} $$ . While results are consistent with the standard model, we find sizeable room for new physics that can be cleanly signaled with null test observables, not probed with searches in other sectors such as kaon and b-decays. The decay D 0 → π + π − μ + μ − requires better understanding of hadronic contributions to be competitive in the current fit. Progress can be achieved by precision study of the double differential decay rate in the dipion and dimuon masses, together with improved theory modelling and D → ππ transition form factors. On the other hand, the 4-body decay is an important contributor to the future global analysis due to its angular distributions that probe complementary combinations of Wilson coefficients, and as a QCD laboratory. The decay Λ c → pℓ + ℓ − is the rising star due to the simplicity of a 3-body decay with available form factors from lattice QCD, sensitivity to both 4-fermion and electromagnetic dipole couplings and its null test forward-backward asymmetry. |
| format | Article |
| id | doaj-art-ac8992b3984b41bf9df11b92fec613f3 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-ac8992b3984b41bf9df11b92fec613f32025-08-20T02:31:54ZengSpringerOpenJournal of High Energy Physics1029-84792024-12-0120241213910.1007/JHEP12(2024)102Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decaysHector Gisbert0Gudrun Hiller1Dominik Suelmann2Escuela de Ciencias, Ingeniería y Diseño, Universidad Europea de ValenciaDepartment of Physics, TU Dortmund UniversityDepartment of Physics, TU Dortmund UniversityAbstract We perform a global analysis of |∆c| = |∆u| = 1 transitions using recent data on D 0 → μ + μ − , D + → π + μ + μ − , Λ c → p μ + μ − , and D 0 → π + π − μ + μ − decays, and work out constraints on new physics Wilson coefficients C 7 , 9 , 10 ′ $$ {C}_{7,9,10}^{\left(\prime \right)} $$ . While results are consistent with the standard model, we find sizeable room for new physics that can be cleanly signaled with null test observables, not probed with searches in other sectors such as kaon and b-decays. The decay D 0 → π + π − μ + μ − requires better understanding of hadronic contributions to be competitive in the current fit. Progress can be achieved by precision study of the double differential decay rate in the dipion and dimuon masses, together with improved theory modelling and D → ππ transition form factors. On the other hand, the 4-body decay is an important contributor to the future global analysis due to its angular distributions that probe complementary combinations of Wilson coefficients, and as a QCD laboratory. The decay Λ c → pℓ + ℓ − is the rising star due to the simplicity of a 3-body decay with available form factors from lattice QCD, sensitivity to both 4-fermion and electromagnetic dipole couplings and its null test forward-backward asymmetry.https://doi.org/10.1007/JHEP12(2024)102Charm Flavour ViolationRare DecaysSemi-Leptonic Decays |
| spellingShingle | Hector Gisbert Gudrun Hiller Dominik Suelmann Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays Journal of High Energy Physics Charm Flavour Violation Rare Decays Semi-Leptonic Decays |
| title | Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays |
| title_full | Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays |
| title_fullStr | Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays |
| title_full_unstemmed | Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays |
| title_short | Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays |
| title_sort | effective field theory analysis of rare ∆c ∆u 1 charm decays |
| topic | Charm Flavour Violation Rare Decays Semi-Leptonic Decays |
| url | https://doi.org/10.1007/JHEP12(2024)102 |
| work_keys_str_mv | AT hectorgisbert effectivefieldtheoryanalysisofrarecu1charmdecays AT gudrunhiller effectivefieldtheoryanalysisofrarecu1charmdecays AT dominiksuelmann effectivefieldtheoryanalysisofrarecu1charmdecays |