Measurements of branching fraction ratios and CP-asymmetries in suppressed B[superscript -]→D(→K[superscript +]π[superscript -])K[superscript -] and B[superscript -]→D(→K[superscript +]π[superscript -])π[superscript -] decays
Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.; Bauer, Gerry P; Makhoul, Khaldoun
DownloadAaltonen-2011-Measurements of branching fraction ratios.pdf (197.5Kb)
PUBLISHER_POLICY
Publisher Policy
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.
Alternative title
Measurements of branching fraction ratios and CP-asymmetries in suppressed B-→D(→K+π-)K- and B-→D(→K+π-)π- decays
Terms of use
Metadata
Show full item recordAbstract
We report the first reconstruction in hadron collisions of the suppressed decays B[superscript -]→D(→K[superscript +]π[superscript -])K[superscript -] and B-→D(→K[superscript +]π[superscript -])π[superscript -], sensitive to the Cabibbo-Kobayashi-Maskawa phase γ, using data from 7 fb[superscript -1] of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B[superscript -]→D(→K[superscript +]π[superscript -])K[superscript -] suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K)=[22.0±8.6(stat)±2.6(syst)]×10[superscript -3], R[superscript +](K)=[42.6±13.7(stat)±2.8(syst)]×10[superscript -3], R[superscript -](K)=[3.8±10.3(stat)±2.7(syst)]×10[superscript -3] as well as the direct CP-violating asymmetry A(K)=-0.82±0.44(stat)±0.09(syst) of this mode. Corresponding quantities for B-→D(→K[superscript +]π[superscript -])π[superscript -] decay are also reported.
Date issued
2011-11Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Aaltonen, T. et al. “Measurements of Branching Fraction Ratios and CP-asymmetries in Suppressed B^{-}→D(→K^{+}π^{-})K^{-} and B^{-}→D(→K^{+}π^{-})π^{-} Decays.” Physical Review D 84.9 (2011): n. pag. Web. 24 Feb. 2012. © 2011 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918