Measurements of branching fraction ratios and CP asymmetries in B[superscript ±]→DCPK[superscript ±] decays in hadron collisions
Name
Aaltonen-2010-Measurements of branching fraction ratios and CP asymmetries in B-+- - DCPK +- decays in hadron collisions.pdf
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293.46 KB
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Author(s)
Gomez-Ceballos, Guillelmo
Paus, Christoph M. E.
Bauer, Gerry P
Goncharov, Maxim
Makhoul, Khaldoun
Alternative Title
Measurements of branching fraction ratios and CP asymmetries in B±→DCPK± decays in hadron collisions
Date Issued
February 2010
Journal
Physical Review D
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Measurements of branching fraction ratios and CP asymmetries in B±-->DCPK± decays in hadron collisions.” Physical Review D 81.3 (2010): 031105. © 2010 The American Physical Society
Version
Final published version
Abstract
We reconstruct B[superscript ±]→DK[superscript ±] decays in a data sample collected by the CDF II detector at the Tevatron collider corresponding to 1 fb[superscript -1] of integrated luminosity. We select decay modes where the D meson decays to either K-π+ (flavor eigenstate) or K[superscript -]K[superscript +], π[superscript -]π[superscript +] (CP-even eigenstates), and measure the direct CP asymmetry A[subscript CP+]=0.39±0.17(stat)±0.04(syst), and the double ratio of CP-even to flavor eigenstate branching fractions R[subscript CP+]=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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.81.031105
