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Studies of the decay B-+/--> DCPK +/-

Abe, K; Abe, K; Abe, N; Abe, R; Abe, T; Ahn, BS; Aihara, H; ... Belle Collaboration; + view all (2003) Studies of the decay B-+/--> DCPK +/-. PHYS REV LETT , 90 (13) , Article 131803. 10.1103/PhysRevLett.90.131803. Green open access

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Abstract

We report studies of the Cabibbo-suppressed decay B+/- --> DCPK+/-, where D-CP denotes CP eigenstates of the D-0 - (D) over bar (0) system. The analysis is based on a 29.1 fb(-1) sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. We measure ratios of branching fractions, relative to Cabibbo-favored B+/--->D(CP)pi+/-, of B>(B- --> D1K-)/B(B- --> D(1)pi(-)) = 0.125 +/-0.036 +/- 0.010 and B(B- --> D2K-)/B(B- --> D(2)pi(-)) = 0.119 +/- 0.028 +/- 0.006; the index 1 (2) denotes the CP = +1 (-1) eigenstate. We also extract the partial rate asymmetries for B+/- --> DCPK+/-, finding A(1) = 0.29 +/- 0.26 +/- 0.05 and A(2) = -0.22 +/- 0.24 +/- 0.04.

Type: Article
Title: Studies of the decay B-+/--> DCPK +/-
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.90.131803
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.90.131803
Language: English
Additional information: © 2003 The American Physical Society
Keywords: CP VIOLATION, BELLE, MODES
UCL classification: UCL
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.ucl.ac.uk/id/eprint/1308403
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