The decays Λb0→Λc+D¯(∗)0K- and Λb0→Λc+Ds∗- are observed for the first time, in proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λb0→Λc+Ds- mode are measured to be (Formula presented.) where the first uncertainties are statistical, the second systematic, and the third, for the Λb0→Λc+D¯(∗)0K- decays, are due to the uncertainties on the branching fractions of the Ds-→K-K+π- and D¯0→K+π- decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λb0→Λc+D¯(∗)0K- decay channels.

(2024). Observation of ᴧb0→ ᴧc+ D̄(*)0K− and ᴧb0→ ᴧc+ Ds*− decays [journal article - articolo]. In THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. Retrieved from https://hdl.handle.net/10446/281989

Observation of ᴧb0→ ᴧc+ D̄(*)0K− and ᴧb0→ ᴧc+ Ds*− decays

Lupato A.;Redi F.;
2024-01-01

Abstract

The decays Λb0→Λc+D¯(∗)0K- and Λb0→Λc+Ds∗- are observed for the first time, in proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λb0→Λc+Ds- mode are measured to be (Formula presented.) where the first uncertainties are statistical, the second systematic, and the third, for the Λb0→Λc+D¯(∗)0K- decays, are due to the uncertainties on the branching fractions of the Ds-→K-K+π- and D¯0→K+π- decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λb0→Λc+D¯(∗)0K- decay channels.
articolo
2024
Aaij, R.; Abdelmotteleb, A. S. W.; Beteta, C. A.; Abudinen, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Agapopoulou, C.; Aidala, C. A.; ...espandi
(2024). Observation of ᴧb0→ ᴧc+ D̄(*)0K− and ᴧb0→ ᴧc+ Ds*− decays [journal article - articolo]. In THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. Retrieved from https://hdl.handle.net/10446/281989
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/281989
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