Measurement of D0-D [bar] 0 mixing parameters using D0→K0Sπ+π− and D0→K0SK+K- decays
We report a direct measurement of D0−¯¯¯D0 mixing parameters through a time-dependent amplitude analysis of the Dalitz plots of D0→K0Sπ+π− and, for the first time, D0→K0SK+K− decays. The low-momentum pion π+s in the decay D*+→D0π+s identifies the flavor of the neutral D meson at its production. Usin...
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| Autori principali: | , , , , |
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| Ente Autore: | |
| Natura: | Article (Journal) |
| Lingua: | inglese |
| Pubblicazione: |
19 August 2010
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| In: |
Physical review letters
Year: 2010, Volume: 105, Fascicolo: 8, Pages: 1-7 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.105.081803 |
| Accesso online: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.105.081803 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.105.081803 
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| Note sull'autore: | P. del Amo Sanchez, A. Adametz, J. Marks, S. Schenk, U. Uwer, (BABAR Collaboration) |
| Riassunto: | We report a direct measurement of D0−¯¯¯D0 mixing parameters through a time-dependent amplitude analysis of the Dalitz plots of D0→K0Sπ+π− and, for the first time, D0→K0SK+K− decays. The low-momentum pion π+s in the decay D*+→D0π+s identifies the flavor of the neutral D meson at its production. Using 468.5 fb−1 of e+e− colliding-beam data recorded near √s=10.6 GeV by the BABAR detector at the PEP-II asymmetric-energy collider at SLAC, we measure the mixing parameters x=[1.6±2.3(stat)±1.2(syst)±0.8(model)]×10−3, and y=[5.7±2.0(stat)±1.3(syst)±0.7(model)]×10−3. These results provide the best measurement to date of x and y. The knowledge of the value of x, in particular, is crucial for understanding the origin of mixing. |
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| Descrizione del documento: | Gesehen am 03.07.2023 Im Titel ist die Zahl "0" hochgestellt, der Buchstabe "S" ist tiefgestellt, im Titel steht der zweite Buchstabe "D" mit einem Oberstrich |
| Descrizione fisica: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.105.081803 |