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Measurement of CP violation in B0→D+D− decays

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The CP violation observables S and C in the decay channel B0→D+D− are determined from a sample of proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 3 fb−1. The observable S describes CP violation in t...

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Autori principali: Aaij, Roel (Autore) , D'Argent, Philippe (Autore) , Bachmann, Sebastian (Autore) , Braun, Svende (Autore) , Britsch, Markward (Autore) , Comerma-Montells, Albert (Autore) , De Cian, Michel (Autore) , Esen, Sevda (Autore) , Gerick, David (Autore) , Gersabeck, Evelina (Autore) , Grillo, Lucia (Autore) , Han, Xiaoxue (Autore) , Hansmann-Menzemer, Stephanie (Autore) , Jäger, Andreas (Autore) , Kecke, Matthieu (Autore) , Kolpin, Michael (Autore) , Kreplin, Katharina (Autore) , Leverington, Blake (Autore) , Marks, Jörg (Autore) , Meißner, Marco (Autore) , Mitzel, Dominik (Autore) , Neubert, Sebastian (Autore) , Neuner, Max (Autore) , Nikodem, Thomas (Autore) , Piucci, Alessio (Autore) , Stahl, Marian (Autore) , Stemmle, Simon (Autore) , Uwer, Ulrich (Autore) , Vesterinen, Mika (Autore) , Zhelezov, Alexey (Autore)
Ente Autore: LHCb Collaboration (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 23 December 2016
In: Physical review letters
Year: 2016, Volume: 117, Fascicolo: 26
ISSN:1079-7114
DOI:10.1103/PhysRevLett.117.261801
Accesso online:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.117.261801
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.117.261801
Testo
Note sull'autore:R. Aaij et al.* (LHCb Collaboration)
Descrizione
Riassunto:The CP violation observables S and C in the decay channel B0→D+D− are determined from a sample of proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 3 fb−1. The observable S describes CP violation in the interference between mixing and the decay amplitude, and C parametrizes direct CP violation in the decay. The following values are obtained from a flavor-tagged, decay-time-dependent analysis: S=−0.54+0.17−0.16(stat)±0.05(syst), C=0.26+0.18−0.17(stat)±0.02(syst). These values provide evidence for CP violation at a significance level of 4.0 standard deviations. The phase shift due to higher-order standard model corrections is constrained to a small value of Δϕ=−0.16+0.19−0.21 rad.
Descrizione del documento:Im Titel sind die Zahl 0 und die Zeichen + und - hochgestellt
*LHCb Collaboration: R. Aaij, P. D'Argent, S. Bachmann, S. Braun, M. Britsch, A. Comerma-Montells, M. De Cian, 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, D. Stemmle, U. Uwer, M. Vesterinen, A. Zhelezov [und 741 weitere Personen]
Gesehen am 03.07.2020
Descrizione fisica:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.117.261801

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