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Search for the rare decay of charmed baryon Λ+c into the pμ+μ− final state

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A search for the nonresonant Λ+𝑐 →𝑝⁢𝜇+⁢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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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Celani, Sara (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Dittmann, Lucas (Author) , Esen, Sevda (Author) , Frau, Giulia (Author) , Glaser, Fabian (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Herrero Gascón, Paula (Author) , Hu, Jiangqiao (Author) , Kubat, Jakub (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Pais, Preema (Author) , Roy, Shreya (Author) , Ruiz Diaz, Miguel (Author) , Schmelling, Michael (Author) , Tuci, Giulia (Author) , Uecker, Lennart Henning (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 24 September 2024
In: Physical review
Year: 2024, Volume: 110, Issue: 5, Pages: 1-13
ISSN:2470-0029
DOI:10.1103/PhysRevD.110.052007
Online Access: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
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Author Notes:R. Aaij et al., (LHCb Collaboration)
Description
Summary:A search for the nonresonant Λ+𝑐 →𝑝⁢𝜇+⁢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 →𝑝⁢𝜇+⁢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.
Item Description: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
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.110.052007

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