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Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K-0

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Gaillard, JM; Hicheur, A; Karyotakis, Y; ... BaBar Collaboration, .; + view all (2004) Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K-0. PHYS REV LETT , 92 (20) , Article 201802. 10.1103/PhysRevLett.92.201802. Green open access

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Abstract

We present measurements of branching fractions and CP-violating asymmetries in decays of B mesons to two-body final states containing a K-0. The results are based on a data sample of approximately 88x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure B(B+-->K(0)pi(+))=(22.3+/-1.7+/-1.1)x10(-6), B(B-0-->K(0)pi(0))=(11.4+/-1.7+/-0.8)x10(-6), B(B+-->(K) over bar K-0(+))<2.5x10(-6), and B(B-0-->K-0(K) over bar (0))<1.8x10(-6), where the first uncertainty is statistical and the second is systematic, and the upper limits are at the 90% confidence level. In addition, the following CP-violating asymmetries have been measured: A(CP)(B+-->K(0)pi(+))=-0.05+/-0.08+/-0.01 and A(CP)(B-0-->K(0)pi(0))=0.03+/-0.36+/-0.11.

Type: Article
Title: Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K-0
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.92.201802
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.92.201802
Language: English
Additional information: The American Physical Society
Keywords: QCD FACTORIZATION, PI-PI
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.ucl.ac.uk/id/eprint/1303656
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