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Measurement of the branching fractions and CP asymmetry of B- -> (D(CP)K-)-K-0 decays with the BaBar detector

Aubert, B; Barate, R; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; ... BaBar Collaboration, .; + view all (2004) Measurement of the branching fractions and CP asymmetry of B- -> (D(CP)K-)-K-0 decays with the BaBar detector. PHYS REV LETT , 92 (20) , Article 202002. 10.1103/PhysRevLett.92.202002. Green open access

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Abstract

We present a study of B--->(DCPK-)-K-0 decays, where D-CP(0) is reconstructed in CP-even channels, based on a sample of 88.8x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the PEP-II e(+)e(-) storage ring. We measure the ratio of Cabibbo-suppressed to Cabibbo-favored branching fractions B(B--->(DCPK-)-K-0)/B(B--->D(CP)(0)pi(-))=[8.8+/-1.6(stat)+/-0.5(syst)]x10(-2) and the CP asymmetry A(CP)=0.07+/-0.17(stat)+/-0.06(syst). We also measure B(B--->(DK-)-K-0)/B(B--->D(0)pi(-))=[8.31+/-0.35(stat)+/-0.20(syst)]x10(-2) using a sample of 61.0x10(6) B (B) over bar pairs.

Type: Article
Title: Measurement of the branching fractions and CP asymmetry of B- -> (D(CP)K-)-K-0 decays with the BaBar detector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.92.202002
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.92.202002
Language: English
Additional information: The American Physical Society
Keywords: MESONS
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery-pp.ucl.ac.uk/id/eprint/1303657
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