Search for the rare decay of charmed baryon Λ+c into the pμ+μ− final state
A search for the nonresonant Λ+𝑐 →𝑝𝜇+𝜇− decay is performed using proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the LHCb experiment, corresponding to an integrated luminosity of 5.4 fb−1. No evidence for the decay is found in the dimuon invariant-mass regions where t...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
24 September 2024
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| In: |
Physical review
Year: 2024, Jahrgang: 110, Heft: 5, Pages: 1-13 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.110.052007 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.110.052007 Verlag, kostenfrei, Volltext: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.110.052007 |
| Verfasserangaben: | R. Aaij et al., (LHCb Collaboration) |
| Zusammenfassung: | A search for the nonresonant Λ+𝑐 →𝑝𝜇+𝜇− decay is performed using proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the LHCb experiment, corresponding to an integrated luminosity of 5.4 fb−1. No evidence for the decay is found in the dimuon invariant-mass regions where the expected contributions of resonances is subdominant. The upper limit on the branching fraction of the Λ+𝑐 →𝑝𝜇+𝜇− decay is determined to be 2.9(3.2)×10−8 at 90%(95%) confidence level. The branching fractions in the dimuon invariant-mass regions dominated by the 𝜂, 𝜌 and 𝜔 resonances are also determined. |
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| Beschreibung: | Im Titel sind die Zeichen "+" und "-" hochgestellt und der Buchstabe "c" ist tiefgestellt The LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C. Cocha Toapaxi, M. De Cian, L. Dittmann, S. Esen, G. Frau, F.C. Glaser, P.A. Günther, X. Han, S. Hausmann-Menzemer, P. Herrero Gascon, J. Hu, J. Kubat, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, P.R. Pais, S.R. Roy, M. Ruiz Diaz, M. Schmelling, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov und weitere 1055 Gesehen am 14.07.2025 |
| Beschreibung: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.110.052007 |