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Título: | Constraints on the CKM angle gamma in B-0 ->(D)over bar(0)K(*0) and B-0 ->(DK*0)-K-0 from a Dalitz analysis of D-0 and (D)over bar(0) decays to K-S pi(+)pi(-) |
Autor: | Babar Collaboration; Azzolini, Virginia; López-March, Neus CSIC; Martínez-Vidal, Fernando CSIC ORCID; Milanés, Diego A. CSIC ORCID; Oyanguren, Arantza CSIC ORCID; Aubert, B. | Fecha de publicación: | 15-abr-2009 | Editor: | American Physical Society | Citación: | Physical Review - Section D - Particles and Fields 79 (7): 072003 (2009) | Resumen: | We present constraints on the angle gamma of the Unitarity Triangle with a Dalitz analysis of neutral D decays to K_Spi^+pi^- from the processes B^0 -> barD^0 K^*0 (barB^0 -> D^0 barK^*0) and B0 -> D0 K*0 (barB^0 -> barD^0 barK^*0) with K^*0 -> K^+pi^- (barK^*0 -> K^-pi^+). Using a sample of 371 10^6 BBbar pairs collected with the Babar detector at PEP-II, we measure the angle gamma as a function of r_S, the magnitude of the average ratio between b -> u and b -> c amplitudes. Combining this result with the available information on r_S, we obtain gamma = (162 +- 56) degrees or (342 +- 56) degrees and r_S<0.55 at 95% probability. | Versión del editor: | http://dx.doi.org/ 10.1103/PhysRevD.79.072003 | URI: | http://hdl.handle.net/10261/21992 | DOI: | 10.1103/PhysRevD.79.072003 | ISSN: | 1550-7998 |
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