Observation of the decay [lambda]0b→[lambda]c+pp̄ π−
The decay Λb0→Λc+pp‾π− is observed using pp collision data collected with the LHCb detector at centre-of-mass energies of s=7 and 8 Tev, corresponding to an integrated luminosity of 3 fb−1. The ratio of branching fractions between Λb0→Λc+pp‾π− and Λb0→Λc+π− decays is measured to beB(Λb0→Λc+pp‾π−)B(Λ...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
25 July 2018
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| In: |
Physics letters
Year: 2018, Volume: 784, Pages: 101-111 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2018.07.033 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1016/j.physletb.2018.07.033 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269318305719 
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| Author Notes: | LHCbCollaboration |
MARC
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| 245 | 1 | 0 | |a Observation of the decay [lambda]0b→[lambda]c+pp̄ π− |c LHCbCollaboration |
| 246 | 3 | 0 | |a Λ |
| 246 | 3 | 3 | |a Observation of the decay lambda 0 b → lambda c plus pp uper dash pi minus |
| 264 | 1 | |c 25 July 2018 | |
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| 500 | |a LHCb Collaboration: R. Aaij, P. d'Argent, S. Bachmann, D. Berninghoff, A. Comerma-Montells, M. Dziewiecki, D. Gerick, J.P. Grabowski, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, M. Kolpin, R. Kopecna, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, M. Neuner, A. Piucci, N. Skidmore, M. Stahl, S. Stemmle, U. Uwer, A. Zhelezov [und weitere] | ||
| 500 | |a Im Titel wird Lambda als griechischer Buchstabe dargestellt | ||
| 500 | |a Im Titel ist das Minus-Zeichen hochgestellt | ||
| 500 | |a Im Titel sind "0" und "b" untereinander geschrieben: "0" hochgestellt, "b" tiefgestellt | ||
| 500 | |a Im Titel sind "+" und "c" untereinander geschrieben: "+" hochgestellt, "c" tiefgestellt | ||
| 500 | |a Gesehen am 30.04.2019 | ||
| 520 | |a The decay Λb0→Λc+pp‾π− is observed using pp collision data collected with the LHCb detector at centre-of-mass energies of s=7 and 8 Tev, corresponding to an integrated luminosity of 3 fb−1. The ratio of branching fractions between Λb0→Λc+pp‾π− and Λb0→Λc+π− decays is measured to beB(Λb0→Λc+pp‾π−)B(Λb0→Λc+π−)=0.0540±0.0023±0.0032. Two resonant structures are observed in the Λc+π− mass spectrum of the Λb0→Λc+pp‾π− decays, corresponding to the Σc(2455)0 and Σc⁎(2520)0 states. The ratios of branching fractions with respect to the decay Λb0→Λc+pp‾π− areB(Λb0→Σc0pp‾)×B(Σc0→Λc+π−)B(Λb0→Λc+pp‾π−)=0.089±0.015±0.006,B(Λb0→Σc⁎0pp‾)×B(Σc⁎0→Λc+π−)B(Λb0→Λc+pp‾π−)=0.119±0.020±0.014. In all of the above results, the first uncertainty is statistical and the second is systematic. The phase space is also examined for the presence of dibaryon resonances. No evidence for such resonances is found. | ||
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