Observation of Λb0 → Λc+ D̄(*)0 K- and Λb0 → Λc+ Ds*- decays
The decays Lambda(0)(b) -> Lambda(+)(c) (D) over bar (()*()0) K- and Lambda(0)(b) -> Lambda(+)(c) D-s*(-) are observed for the first time, in proton-proton collision data at root s = 13TeV, corresponding to an integrated luminosity of 5.4fb(-1) collected with the LHCb detector. Their ratios of...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
5 June 2024
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| In: |
The European physical journal. C, Particles and fields
Year: 2024, Jahrgang: 84, Heft: 6, Pages: 1-18 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-024-12752-3 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1140/epjc/s10052-024-12752-3
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| Verfasserangaben: | LHCb Collaboration |
MARC
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| 245 | 1 | 0 | |a Observation of Λb0 → Λc+ D̄(*)0 K- and Λb0 → Λc+ Ds*- decays |c LHCb Collaboration |
| 246 | 3 | 3 | |a Observation of Λ b 0 → Λ c + D̄ (*) 0 K- and Λ b 0 → Λ c+ D s*- decays |
| 246 | 3 | 3 | |a Observation of Lambda b0 → Lambda c+ D̄(*)0 K- and Λb0 → Λc+ Ds*- decays |
| 264 | 1 | |c 5 June 2024 | |
| 300 | |b Diagramme | ||
| 300 | |a 18 | ||
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| 500 | |a Im Titel sind 0, +, (*) und - hochgestellt, b, c und s sind tiefgestellt | ||
| 500 | |a LHCb Collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, C. Cocha Toapaxi, M. De Cian, G. Frau, F.C. Glaser, P.A. Günther, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, J. Kubat, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, P.R. Pais, S.R. Roy, M. Ruiz Diaz, S. Skuza, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov und 1073 weitere | ||
| 500 | |a Online veröffentlicht: 5. Juni 2024 | ||
| 500 | |a Gesehen am 17.09.2025 | ||
| 520 | |a The decays Lambda(0)(b) -> Lambda(+)(c) (D) over bar (()*()0) K- and Lambda(0)(b) -> Lambda(+)(c) D-s*(-) are observed for the first time, in proton-proton collision data at root 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 Lambda(0)(b) -> Lambda(+)(c) D-s(-) mode are measured to be B(Lambda(0)(b) -> Lambda(+)(c) (D) over bar (0) K-)/B(Lambda(0)(b) -> Lambda(+)(c) D-s(-)) = 0.1908(-0.0034-0.0018)(+0.0036+0.0016) +/- 0.0038, B(Lambda(0)(b) -> Lambda(+)(c) (D) over bar*(0) K-)/B(Lambda(0)(b) -> Lambda(+)(c) D-s(-)) = 0.589(-0.017-0.018)(+0.018+0.017) +/- 0.012, B(Lambda(0)(b) -> Lambda(+)(c) D-s*(-))/B(Lambda(0)(b) -> Lambda(+)(c) D-s(-)) = 1.668 +/- 0.022(-0.055)(+0.061), where the first uncertainties are statistical, the second systematic, and the third, for the Lambda(0)(b) -> Lambda(+)(c) (D) over bar (()*()0) K- decays, are due to the uncertainties on the branching fractions of the D-s(-) -> K- K+ pi(-) and (D) over bar0 -> K+ pi(-) decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Lambda(0)(b) -> Lambda(+)(c) (D) over bar (()*()0) K- decay channels. | ||
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