Aubert, B;
Boutigny, D;
Gaillard, JM;
Hicheur, A;
Karyotakis, Y;
Lees, JP;
Robbe, P;
... BABAR Collaboration, .; + view all
(2002)
Measurements of branching fractions and CP-violating asymmetries in B-0 ->pi(+)pi(-), K+ pi(-), K+K- decays.
PHYS REV LETT
, 89
(28)
, Article 281802. 10.1103/PhysRevLett.89.281802.
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Abstract
We present measurements of branching fractions and CP-violating asymmetries for two-body neutral (B) over bar meson decays to charged pions and kaons based on a sample of about 88x10(6) Y(4S)-->B (B) over bar decays. From a time-independent fit we measure the charge-averaged branching fractions B(B-0-->pi(+)pi(-))=(4.7+/-0.6+/-0.2)x10(-6), B(B-0-->K(+)pi(-))=(17.9+/-0.9+/-0.7)x10(-6), and the direct CP-violating charge asymmetry A(Kpi)=-0.102+/-0.050+/-0.016 [-0.188,-0.016], where the ranges in square brackets indicate the 90% confidence intervals. From a time-dependent fit we measure the B-0-->pi(+)pi(-) CP-violating parameters S-pipi=0.02+/-0.34+/-0.05 [-0.54,+0.58] and C-pipi=-0.30+/-0.25+/-0.04 [-0.72,+0.12].
| Type: | Article |
|---|---|
| Title: | Measurements of branching fractions and CP-violating asymmetries in B-0 ->pi(+)pi(-), K+ pi(-), K+K- decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.89.281802 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.89.281802 |
| Language: | English |
| 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/1303618 |
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