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Amplitude analysis of B^{0}→K^{+}π^{-}π^{0} and evidence of direct CP violation in B→K*π decays

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Gershon, T. J., Harrison, P. F. and Latham, Thomas (2011) Amplitude analysis of B^{0}→K^{+}π^{-}π^{0} and evidence of direct CP violation in B→K*π decays. Physical Review D, Vol.83 (No.11). 112010 . ISSN 0556-2821

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Abstract

We analyze the decay B(0) -> K(+) pi(-) pi(0) with a sample of 4.54 x 10(8) B (B) over bar events collected by the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC, and extract the complex amplitudes of seven interfering resonances over the Dalitz plot. These results are combined with amplitudes measured in B(0) -> K(S)(0)pi(+)pi(-) decays to construct isospin amplitudes from B(0) -> K* pi and B(0) -> rho K decays. We measure the phase of the isospin amplitude Phi(3/2), useful in constraining the Cabibbo-Kobayashi-Maskawa unitarity triangle angle gamma and evaluate a CP rate asymmetry sum rule sensitive to the presence of new physics operators. We measure direct CP violation in B(0) -> K*(+) pi(-) decays at the level of 3 sigma when measurements from both B(0) -> K(+) pi(-) pi(0) and B(0) -> K(S)(0) pi(+) pi(-) decays are combined.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Radioactive decay, Mesons, CP violation (Nuclear physics)
Journal or Publication Title: Physical Review D
Publisher: American Physical Society
ISSN: 0556-2821
Official Date: 29 June 2011
Volume: Vol.83
Number: No.11
Page Range: 112010
Identification Number: 10.1103/PhysRevD.83.112010
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Description:
Funder: United States. Dept. of Energy (DOE), National Science Foundation (U.S.) (NSF), Natural Sciences and Engineering Research Council Canada (NSERC), Institut national de physique nucléaire et de physique des particules (IN2P3), Germany. Bundesministerium für Bildung und Forschung (BMBF) , Istituto nazionale di fisica nucleare (INFN), Stichting voor Fundamenteel Onderzoek der Materie (FOM) [Foundation for Fundamental Research on Matter], Norges forskningsråd [Norwegian Research Council] , Ministry of Education and Science of the Russian Federation (MESRF) , Spain. Ministerio de Ciencia e Innovación (MCI), Science and Technology Facilities Council (Great Britain) (STFC), European Union (EU), Alfred P. Sloan Foundation, United States-Israel Binational Science Foundation, France. Commissariat à l'énergie atomique (CEA), Deutsche Forschungsgemeinschaft (DFG)
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URI: http://wrap.warwick.ac.uk/id/eprint/38807

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