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Free accessOther version: http://journals.aps.org/prd/abstract/10.1103/PhysRevD.84.091504
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unige:38700 
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Measurements of branching fraction ratios and CP-asymmetries in suppressed B− -> D(-> K+π−)K− and B− -> D(-> K+π−)π− decays |
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| Collaboration | With : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin | |
| Published in | Physical Review. D. 2011, vol. 84, no. 09, p. 091504 | |
| Abstract | We report the first reconstruction in hadron collisions of the suppressed decays B−→D(→K+π−)K− and B−→D(→K+π−)π−, sensitive to the Cabibbo-Kobayashi-Maskawa phase γ, using data from 7 fb−1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B−→D(→K+π−)K− 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)]×10−3, R+(K)=[42.6±13.7(stat)±2.8(syst)]×10−3, R−(K)=[3.8±10.3(stat)±2.7(syst)]×10−3 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+π−)π− decay are also reported. | |
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Article (Published version) (198 Kb) - Free access Other version: http://journals.aps.org/prd/abstract/10.1103/PhysRevD.84.091504 |
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| Structures | ||
| Citation (ISO format) | CDF COLLABORATION. Measurements of branching fraction ratios and CP-asymmetries in suppressed B− -> D(-> K+π−)K− and B− -> D(-> K+π−)π− decays. In: Physical Review. D, 2011, vol. 84, n° 09, p. 091504. https://archive-ouverte.unige.ch/unige:38700 |
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