Measurement of the charm mixing parameter yCP-yKπCP using two-body D0 meson decays
A measurement of the ratios of the effective decay widths of D0→π−π+ and D0→K−K+ decays over that of D0→K−π+ decays is performed with the LHCb experiment using proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb−1. These observables give a...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
25 May 2022
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| In: |
Physical review
Year: 2022, Jahrgang: 105, Heft: 9, Pages: 1-17 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.105.092013 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.105.092013 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.105.092013 |
| Verfasserangaben: | R. Aaij et al. (LHCb Collaboration) |
| Zusammenfassung: | A measurement of the ratios of the effective decay widths of D0→π−π+ and D0→K−K+ decays over that of D0→K−π+ decays is performed with the LHCb experiment using proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb−1. These observables give access to the charm mixing parameters yππCP−yKπCP and yKKCP−yKπCP, and are measured as yππCP−yKπCP=(6.57±0.53±0.16)×10−3, yKKCP−yKπCP=(7.08±0.30±0.14)×10−3, where the first uncertainties are statistical and the second systematic. The combination of the two measurements is yCP−yKπCP=(6.96±0.26±0.13)×10−3, which is four times more precise than the previous world average. |
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| Beschreibung: | Im Text ist "Kπ" und "0" hochgestellt, "CP" jeweils tiefgestellt LHCb Collaboration: R. Aaij, F. Archilli, S. Bachmann, D. Berninghoff, M. Borsato, R. Caspary, G. Frau, G. Gerick, J.P. Grabowski, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, J. Kubat, B. Leverington, P. Li, H. Malygina, J. Marks, R. Skuza, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, A. Zhelezov [und viele weitere] Gesehen am 06.09.2022 |
| Beschreibung: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.105.092013 |