Measurements of the branching fraction ratio B(ϕ → µ +µ −)/B(ϕ → e +e −) with charm meson decays
| dc.contributor.author | Comerma Montells, Albert | |
| dc.contributor.author | Garcia Moreno, Paula | |
| dc.contributor.author | Garrido Beltrán, Lluís | |
| dc.contributor.author | Gioventù, Alessandra | |
| dc.contributor.author | Gironella Gironell, Pere | |
| dc.contributor.author | Gomez Fernandez, Sergio | |
| dc.contributor.author | Graugés Pous, Eugeni | |
| dc.contributor.author | Lobo Salvia, Aniol | |
| dc.contributor.author | López Huertas, Albert | |
| dc.contributor.author | Manera Escalero, Rafel | |
| dc.contributor.author | Marin Benito, Carla | |
| dc.contributor.author | Mauricio Ferre, Joan | |
| dc.contributor.author | Alfonso Albero, Alejandro | |
| dc.contributor.author | Vazquez Gomez, Ricardo | |
| dc.contributor.author | LHCb Collaboration | |
| dc.date.accessioned | 2025-07-04T15:09:44Z | |
| dc.date.available | 2025-07-04T15:09:44Z | |
| dc.date.issued | 2024 | |
| dc.date.updated | 2025-07-04T15:09:44Z | |
| dc.description.abstract | Measurements of the branching fraction ratio B(ϕ → µ +µ −)/B(ϕ → e +e −) with D+ s → π +ϕ and D+ → π +ϕ decays, denoted Rs ϕπ and Rd ϕπ, are presented. The analysis is performed using a dataset corresponding to an integrated luminosity of 5.4 fb−1 of pp collision data collected with the LHCb experiment. The branching fractions are normalised with respect to the B+ → K+J/ψ(→ e +e −) and B+ → K+J/ψ(→ µ +µ −) decay modes. The combination of the results yields Rϕπ = 1.022 ± 0.012 (stat) ± 0.048 (syst). The result is compatible with previous measurements of the ϕ → ℓ +ℓ − branching fractions and predictions based on the Standard Model. | |
| dc.format.extent | 24 p. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.idgrec | 756550 | |
| dc.identifier.issn | 1126-6708 | |
| dc.identifier.uri | https://hdl.handle.net/2445/222019 | |
| dc.language.iso | eng | |
| dc.publisher | Springer Verlag | |
| dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1007/JHEP05(2024)293 | |
| dc.relation.ispartof | Journal of High Energy Physics, 2024, vol. 2024, num.293 | |
| dc.relation.uri | https://doi.org/10.1007/JHEP05(2024)293 | |
| dc.rights | cc-by (c) Aaij, R. et al., 2024 | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | |
| dc.subject.classification | Física de partícules | |
| dc.subject.classification | Leptons (Física nuclear) | |
| dc.subject.classification | Hadrons | |
| dc.subject.other | Particle physics | |
| dc.subject.other | Leptons (Nuclear physics) | |
| dc.subject.other | Hadrons | |
| dc.title | Measurements of the branching fraction ratio B(ϕ → µ +µ −)/B(ϕ → e +e −) with charm meson decays | |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |
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