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First observation of the decay D0 → K-π+[my]+[my]- in the [rho]0-[omega] region of the dimuon mass spectrum

A study of the decay D0→K−π+μ+μ− is performed using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb−1. Decay candidates with muon pairs that have an invariant mass in the range 675-875 MeV/c2 are...

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Main Authors: Aaij, Roel (Author) , D'Argent, Philippe (Author) , Bachmann, Sebastian (Author) , Braun, Svende (Author) , Comerma-Montells, Albert (Author) , De Cian, Michel (Author) , Dordei, Francesca (Author) , Esen, Sevda (Author) , Gerick, David (Author) , Gersabeck, Evelina (Author) , Grillo, Lucia (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Jäger, Andreas (Author) , Kecke, Matthieu (Author) , Kolpin, Michael (Author) , Kreplin, Katharina (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Mitzel, Dominik (Author) , Neubert, Sebastian (Author) , Neuner, Max (Author) , Nikodem, Thomas (Author) , Piucci, Alessio (Author) , Stahl, Marian (Author) , Uwer, Ulrich (Author) , Vesterinen, Mika (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 19 April 2016
In: Physics letters
Year: 2016, Volume: 757, Pages: 558-567
ISSN:1873-2445
DOI:10.1016/j.physletb.2016.04.029
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2016.04.029
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269316301022
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Author Notes:LHCb Collaboration*
Description
Summary:A study of the decay D0→K−π+μ+μ− is performed using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 2.0 fb−1. Decay candidates with muon pairs that have an invariant mass in the range 675-875 MeV/c2 are considered. This region is dominated by the ρ0 and ω resonances. The branching fraction in this range is measured to beB(D0→K−π+μ+μ−)=(4.17±0.12(stat)±0.40(syst))×10−6. This is the first observation of the decay D0→K−π+μ+μ−. Its branching fraction is consistent with the value expected in the Standard Model.
Item Description:Im Titel ist die Zahl 0 und die Zeichen + und - hochgestellt
Im Titel sind "my", "rho" und "omega" als griechische Buchstaben dargestellt
*LHCb Collaboration: R. Aaij, P. D'Argent, S. Bachmann, S. Braun, A. Comerma-Montells, M. De Cian, F. Dordei, S. Esen, D. Gerick, E. Gersabeck, L. Grillo, X. Han, S. Hansmann-Menzemer, A. Jaeger, M. Kecke, M. Kolpin, K. Kreplin, B. Leverington, J. Marks, M. Meissner, D.S. Mitzel, S. Neubert, M. Neuner, T. Nikodem, A. Piucci, M. Stahl, U. Uwer, M. Vesterinen, A. Zhelezov [und 705 weitere Personen]
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Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2016.04.029

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