A search for the nonresonant Λc+ → p μ+ μ− decay is performed using proton-proton collision data recorded at a centre-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 Λc+ → 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.

Aaij, R., Abdelmotteleb, A. S. W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adefisoye, A. A., et al. (2024). Search for the rare decay of charmed baryon Λc+ into p μ+ μ− final state. PHYSICAL REVIEW D, 110(5), 1-13 [10.1103/physrevd.110.052007].

Search for the rare decay of charmed baryon Λc+ into p μ+ μ− final state

Carbone, A.;Ferrari, F.;Galli, D.;Patrignani, C.;Spedicato, E.;Villa, A.;
2024

Abstract

A search for the nonresonant Λc+ → p μ+ μ− decay is performed using proton-proton collision data recorded at a centre-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 Λc+ → 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.
2024
Aaij, R., Abdelmotteleb, A. S. W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adefisoye, A. A., et al. (2024). Search for the rare decay of charmed baryon Λc+ into p μ+ μ− final state. PHYSICAL REVIEW D, 110(5), 1-13 [10.1103/physrevd.110.052007].
Aaij, R.; Abdelmotteleb, A.  S.  W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adefisoye, A.  A.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Agapop...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1002487
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