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. . ., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adefisoye, 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. . ., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adefisoye, 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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