Charm mixing at LHCb
We report a measurement of the time-dependent ratio of D0 → K+π− to D0 → K−π+ decay rates in D*+-tagged events using 1.0 fb-1 of integrated luminosity recorded by the LHCb experiment. We measure the mixing parameters x'2 = (−0.9 ± 1.3) × 10-4, y' = (7.2 ± 2.4) × 10-3 and the ratio of doubl...
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| Dokumenttyp: | Article (Journal) Kapitel/Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
20 May 2013
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| In: |
The European physical journal. Web of Conferences
Year: 2013, Jahrgang: 49 |
| ISSN: | 2100-014X |
| DOI: | 10.1051/epjconf/20134913009 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/epjconf/20134913009 Verlag, lizenzpflichtig, Volltext: https://www.epj-conferences.org/articles/epjconf/abs/2013/10/epjconf_hcp12_13009/epjconf_hcp12_13009.html 
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| Verfasserangaben: | Angelo Di Canto |
| Zusammenfassung: | We report a measurement of the time-dependent ratio of D0 → K+π− to D0 → K−π+ decay rates in D*+-tagged events using 1.0 fb-1 of integrated luminosity recorded by the LHCb experiment. We measure the mixing parameters x'2 = (−0.9 ± 1.3) × 10-4, y' = (7.2 ± 2.4) × 10-3 and the ratio of doubly-Cabibbo-suppressed to Cabibbo-favored decay rates RD = (3.52 ± 0.15) × 10-3. The result excludes the no-mixing hypothesis with a probability corresponding to 9.1 standard deviations and represents the first observation of charm mixing from a single measurement. |
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| Beschreibung: | Gesehen am 14.12.2020 |
| Beschreibung: | Online Resource |
| ISSN: | 2100-014X |
| DOI: | 10.1051/epjconf/20134913009 |