Measurement of the difference of time-integrated CP asymmetries in D0→K-K+ and D0→π-π+ decays
A search for CP violation in D0→K−K+ and D0→π−π+ decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb−1, collected using the LHCb detector at center-of-mass energies of 7 and 8 TeV. The flavor of the charm meson is inferred from the charge of the pion in D*+...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
9 May 2016
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| In: |
Physical review letters
Year: 2016, Jahrgang: 116, Heft: 19 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.116.191601 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.116.191601 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.116.191601 |
| Verfasserangaben: | R. Aaij et al.* (LHCb Collaboration) |
| Zusammenfassung: | A search for CP violation in D0→K−K+ and D0→π−π+ decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb−1, collected using the LHCb detector at center-of-mass energies of 7 and 8 TeV. The flavor of the charm meson is inferred from the charge of the pion in D*+→D0π+ and D*−→¯¯¯D0π− decays. The difference between the CP asymmetries in D0→K−K+ and D0→π−π+ decays, ΔACP≡ACP(K−K+)−ACP(π−π+), is measured to be [−0.10±0.08(stat)±0.03(syst)]%. This is the most precise measurement of a time-integrated CP asymmetry in the charm sector from a single experiment. |
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| Beschreibung: | *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, U. Uwer, M. Vesterinen, A. Zhelezov [und 702 weitere Personen] Im Titel sind die Zahl 0 und die Zeichen + und - hochgestellt Gesehen am 10.07.2020 |
| Beschreibung: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.116.191601 |