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Measurements of branching fraction ratios and CP asymmetries in B± -> DCPK± decays in hadron collisions

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in Physical Review. D. 2010, vol. 81, no. 03, p. 031105
Abstract We reconstruct B±→DK± decays in a data sample collected by the CDF II detector at the Tevatron collider corresponding to 1  fb−1 of integrated luminosity. We select decay modes where the D meson decays to either K−π+ (flavor eigenstate) or K−K+, π−π+ (CP-even eigenstates), and measure the direct CP asymmetry ACP+=0.39±0.17(stat)±0.04(syst), and the double ratio of CP-even to flavor eigenstate branching fractions RCP+=1.30±0.24(stat)±0.12(syst). These measurements will improve the determination of the Cabibbo-Kobayashi-Maskawa angle γ. They are performed here for the first time using data from hadron collisions.
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CDF COLLABORATION. Measurements of branching fraction ratios and CP asymmetries in B± -> DCPK± decays in hadron collisions. In: Physical Review. D, 2010, vol. 81, n° 03, p. 031105. https://archive-ouverte.unige.ch/unige:38652

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Deposited on : 2014-07-14

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