Observation of the decays [lambda]0b→[chi]c1pK− and [lambda]0b→[chi]c2pK−
The first observation of the decays Λ0b→χc1pK− and Λ0b→χc2pK− is reported using a data sample corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment in pp collisions at center-of-mass energies of 7 and 8 TeV. The following ratios of branching fractions are measured:...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
8 August 2017
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| In: |
Physical review letters
Year: 2017, Jahrgang: 119, Heft: 6 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.119.062001 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.119.062001 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.119.062001 
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| Verfasserangaben: | R. Aaij et al. * (LHCb Collaboration) |
MARC
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| 245 | 1 | 0 | |a Observation of the decays [lambda]0b→[chi]c1pK− and [lambda]0b→[chi]c2pK− |c R. Aaij et al. * (LHCb Collaboration) |
| 246 | 3 | 0 | |a Λ, χ |
| 246 | 3 | 3 | |a Observation of the decays lambda 0 b → chi c 1 p K − and lambda 0 b → chi c 2 p K − |
| 264 | 1 | |c 8 August 2017 | |
| 300 | |a 11 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Im Titel sind "lambda" und "chi" als griechische Buchstaben dargesetellt | ||
| 500 | |a Im Titel sind "0" und "b" übereinander geschrieben, wobei "0" oben und "b" unten steht | ||
| 500 | |a Im Titel sind "c1" und "c2" tiefgestellt | ||
| 500 | |a Im Titel ist "-" hochgestellt | ||
| 500 | |a The LHCb collaboration: R. Aaij, P. d'Argent, S. Bachmann, S. Braun, A. Comerma-Montells, M. De Cian, M. Dziewieck, S. Esen, D. Gerick, E. Gersabeck, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, R. Kopecná, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, M. Neuner, T. Nikodem, A. Piucci, M. Schilller, S. Stahl, S. Stemmle, U. Uwer, R. Waldi, A. Zhelezov [und weitere] | ||
| 500 | |a Gesehen am 29.08.2018 | ||
| 520 | |a The first observation of the decays Λ0b→χc1pK− and Λ0b→χc2pK− is reported using a data sample corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment in pp collisions at center-of-mass energies of 7 and 8 TeV. The following ratios of branching fractions are measured: B(Λ0b→χc1pK−)B(Λ0b→J/ψpK−)=0.242±0.014±0.013±0.009,B(Λ0b→χc2pK−)B(Λ0b→J/ψpK−)=0.248±0.020±0.014±0.009,B(Λ0b→χc2pK−)B(Λ0b→χc1pK−)=1.02±0.10±0.02±0.05,where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty on the branching fractions of the χc1→J/ψγ and χc2→J/ψγ decays. Using both decay modes, the mass of the Λ0b baryon is also measured to be mΛ0b=5619.44±0.28±0.26 MeV/c2, where the first and second uncertainties are statistical and systematic, respectively. | ||
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| SRT | |a LHCBCOLLABOBSERVATIO8201 | ||