First observation of the doubly charmed baryon decay [Xi]++cc→[Xi]+cπ+

The doubly charmed baryon decay Ξ++cc→Ξ+cπ+ is observed for the first time, with a statistical significance of 5.9σ, confirming a recent observation of the baryon in the Λ+cK−π+π+ final state. The data sample used corresponds to an integrated luminosity of 1.7 fb−1, collected by the LHCb experiment...

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Autori principali: Aaij, Roel (Autore) , D'Argent, Philippe (Autore) , Bachmann, Sebastian (Autore) , Berninghoff, Daniel (Autore) , Braun, Svende (Autore) , De Cian, Michel (Autore) , Comerma-Montells, Albert (Autore) , Dordei, Francesca (Autore) , Dziewiecki, Michal (Autore) , Esen, Sevda (Autore) , Färber, Christian (Autore) , Gerick, David (Autore) , Grabowski, Jascha (Autore) , Han, Xiaoxue (Autore) , Hansmann-Menzemer, Stephanie (Autore) , Kecke, Matthieu (Autore) , Khanji, Basem (Autore) , Kolpin, Michael (Autore) , Kopecná, Renata (Autore) , Leverington, Blake (Autore) , Marks, Jörg (Autore) , Mitzel, Dominik (Autore) , Neubert, Sebastian (Autore) , Neuner, Max (Autore) , Piucci, Alessio (Autore) , Stahl, Marian (Autore) , Stemmle, Simon (Autore) , Tilburg, Jeroen van (Autore) , Uwer, Ulrich (Autore) , Zhelezov, Alexey (Autore) , Seyfert, Paul (Autore)
Ente Autore: LHCb Collaboration (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 17 October 2018
In: Physical review letters
Year: 2018, Volume: 121, Fascicolo: 16
ISSN:1079-7114
DOI:10.1103/PhysRevLett.121.162002
Accesso online:Verlag, Volltext: https://doi.org/10.1103/PhysRevLett.121.162002
Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.121.162002
Testo
Note sull'autore:R. Aaij et al.* (LHCb Collaboration)
Descrizione
Riassunto:The doubly charmed baryon decay Ξ++cc→Ξ+cπ+ is observed for the first time, with a statistical significance of 5.9σ, confirming a recent observation of the baryon in the Λ+cK−π+π+ final state. The data sample used corresponds to an integrated luminosity of 1.7 fb−1, collected by the LHCb experiment in pp collisions at a center-of-mass energy of 13 TeV. The Ξ++cc mass is measured to be 3620.6±1.5(stat)±0.4(syst)±0.3(Ξ+c) MeV/c2 and is consistent with the previous result. The ratio of branching fractions between the decay modes is measured to be [B(Ξ++cc→Ξ+cπ+)×B(Ξ+c→pK−π+)]/[B(Ξ++cc→Λ+cK−π+π+)×B(Λ+c→pK−π+)]=0.035±0.009(stat)±0.003(syst).
Descrizione del documento:R. Aaij, P. d'Argent, S. Bachmann, D. Berninghoff, S. Braun, A. Comerma-Montells, M. De Cian, F. Dordei, M. Dziewiecki, S. Esen, C. Färber, 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, M. Schiller, P. Seyfert, M. Stahl, S. Stemmle, J. van Tilburg, U. Uwer, A. Zhelezov [und weitere]
Im Titel sind Xi und pi als griechische Buchstaben dargestellt
Im Titel ist "+" hochgestellt und "c" tiefgestellt
Gesehen am 04.06.2019
Descrizione fisica:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.121.162002