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Open Access item 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(-)

Authors:Babar Collaboration
Azzolini, Virginia
López-March, Neus
Martínez-Vidal, Fernando
Milanés, Diego A.
Oyanguren, Arantza
Aubert, B.
Issue Date:15-Apr-2009
Publisher:American Physical Society
Citation:Physical Review - Section D - Particles and Fields 79 (7): 072003 (2009)
Abstract: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.
Publisher version (URL):http://dx.doi.org/ 10.1103/PhysRevD.79.072003
URI:http://hdl.handle.net/10261/21992
ISSN:1550-7998
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