First observation of the decay λ0b→ηc(1S)pK-
The decay Λ0b→ηc(1S)pK− is observed for the first time using a data sample of proton-proton collisions, corresponding to an integrated luminosity of 5.5 fb−1, collected with the LHCb experiment at a center-of-mass energy of 13 TeV. The branching fraction of the decay is measured, using the Λ0b→J/ψpK...
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
22 December 2020
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| In: |
Physical review
Year: 2020, Jahrgang: 102, Heft: 11, Pages: 1-12 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.102.112012 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.102.112012 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.102.112012 
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| Verfasserangaben: | R. Aaij et al. (LHCb Collaboration) |
MARC
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| 245 | 1 | 0 | |a First observation of the decay λ0b→ηc(1S)pK- |c R. Aaij et al. (LHCb Collaboration) |
| 246 | 3 | 3 | |a First observation of the decay lambda 0 b → eta c (1S)pK minus |
| 264 | 1 | |c 22 December 2020 | |
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| 500 | |a Im Titel werden "lambda" und "eta" als griechische Buchstaben dargestellt | ||
| 500 | |a Im Titel ist der Buchstabe "c" tiefgestellt, das Minuszeichen hochgestellt | ||
| 500 | |a Im Titel ist die Zahl "0" hochgestellt, der Buchstabe "b" tiefgestellt | ||
| 500 | |a The LHCb collaboration: R. Aaij, F. Archilli, S. Bachmann, D. Berninghoff, M. Borsato, G. Frau, D. Gerick, J. Grabowski, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kopecna, B. Leverington, P. Li, H. Malygina, J. Marks, D.A. Unverzagt, U. Uwer, L. Witola, A. Zhelezov [und viele weitere] | ||
| 500 | |a Gesehen am 04.02.2022 | ||
| 520 | |a The decay Λ0b→ηc(1S)pK− is observed for the first time using a data sample of proton-proton collisions, corresponding to an integrated luminosity of 5.5 fb−1, collected with the LHCb experiment at a center-of-mass energy of 13 TeV. The branching fraction of the decay is measured, using the Λ0b→J/ψpK− decay as a normalization mode, to be B(Λ0b→ηc(1S)pK−)=(1.06±0.16±0.06+0.22−0.19)×10−4, where the quoted uncertainties are statistical, systematic and due to external inputs, respectively. A study of the ηc(1S)p mass spectrum is performed to search for the Pc(4312)+ pentaquark state. No evidence is observed and an upper limit of B(Λ0b→Pc(4312)+K−)×B(Pc(4312)+→ηc(1S)p)B(Λ0b→ηc(1S)pK−)<0.24 is obtained at the 95% confidence level. | ||
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