2024-03-28T13:32:32Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/219922016-02-16T06:35:26Zcom_10261_61com_10261_4col_10261_314
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(-)
Babar Collaboration
Azzolini, Virginia
López-March, Neus
Martínez-Vidal, Fernando
Milanés, Diego A.
Oyanguren, Arantza
Aubert, B.
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.
We are grateful for the extraordinary contributions of
our PEP-II colleagues in achieving the excellent luminosity
and machine conditions that have made this work possible.
The success of this project also relies critically on
the expertise and dedication of the computing organizations
that support BABAR. The collaborating institutions
wish to thank SLAC for its support and the kind hospitality
extended to them. This work is supported by the
US Department of Energy and National Science Foundation,
the Natural Sciences and Engineering Research
Council (Canada), the Commissariat à l'Energie Atomique
and Institut National de Physique Nucléaire et de
Physique des Particules (France), the Bundesministerium
für Bildung und Forschung and Deutsche Forschungsgemeinschaft
(Germany), the Istituto Nazionale di Fisica
Nucleare (Italy), the Foundation for Fundamental Research
on Matter (The Netherlands), the Research Council
of Norway, the Ministry of Education and Science of
the Russian Federation, Ministerio de Educación y Ciencia
(Spain), and the Science and Technology Facilities
Council (United Kingdom). Individuals have received
support from the Marie-Curie IEF program (European
Union) and the A. P. Sloan Foundation.
Peer reviewed
2010-03-05T12:55:33Z
2010-03-05T12:55:33Z
2009-04-15
artículo
http://purl.org/coar/resource_type/c_6501
Physical Review - Section D - Particles and Fields 79 (7): 072003 (2009)
1550-7998
http://hdl.handle.net/10261/21992
10.1103/PhysRevD.79.072003
en
http://dx.doi.org/ 10.1103/PhysRevD.79.072003
open
319566 bytes
application/pdf
American Physical Society