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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Main Authors:	Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Braun, Svende (Author) , De Cian, Michel (Author) , Comerma-Montells, Albert (Author) , Dordei, Francesca (Author) , Dziewiecki, Michal (Author) , Esen, Sevda (Author) , Färber, Christian (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Kecke, Matthieu (Author) , Khanji, Basem (Author) , Kolpin, Michael (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Piucci, Alessio (Author) , Stahl, Marian (Author) , Stemmle, Simon (Author) , Tilburg, Jeroen van (Author) , Uwer, Ulrich (Author) , Zhelezov, Alexey (Author) , Seyfert, Paul (Author)
Corporate Author:	LHCb Collaboration (Author)
Format:	Article (Journal)
Language:	English
Published:	17 October 2018
In:	Physical review letters Year: 2018, Volume: 121, Issue: 16
ISSN:	1079-7114
DOI:	10.1103/PhysRevLett.121.162002
Online Access:	Verlag, Volltext: https://doi.org/10.1103/PhysRevLett.121.162002 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.121.162002
Author Notes:	R. Aaij et al.* (LHCb Collaboration)

MARC


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245	1	0	\|a First observation of the doubly charmed baryon decay [Xi]++cc→[Xi]+cπ+ \|c R. Aaij et al.* (LHCb Collaboration)
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246	3	3	\|a First observation of the doubly charmed baryon decay Xi plus plus cc → Xi plus c pi plus
264		1	\|c 17 October 2018
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500			\|a Gesehen am 04.06.2019
520			\|a 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).
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SRT			\|a LHCBCOLLABFIRSTOBSER1720

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

MARC

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