Aubert, B;
Barate, R;
Boutigny, D;
Gaillard, JM;
Hicheur, A;
Karyotakis, Y;
Lees, JP;
... BABAR Collaboration; + view all
(2003)
Observation of the decay B-+/- -> pi(+/-)pi(0), study of B-+/- -> K-+/-pi(0), and search for B-0 -> pi(0)pi(0).
PHYS REV LETT
, 91
(2)
, Article 021801. 10.1103/PhysRevLett.91.021801.
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Abstract
We present results for the branching fractions and charge asymmetries in B+/--->h(+/-)pi(0) (where h(+/-)=pi(+/-),K+/-) and a search for the decay B-0-->pi(0)pi(0) using a sample of approximately 88x10(6) B (B) over bar pairs collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure B(B+/--->pi(+/-)pi(0))=(5.5(-0.9)(+1.0)+/-0.6)x10(-6), where the first error is statistical and the second is systematic. The B+/--->pi(+/-)pi(0) signal has a significance of 7.7sigma including systematic uncertainties. We simultaneously measure the K(+/-)pi(0) branching fraction to be B(B+/--->K(+/-)pi(0))=(12.8(-1.1)(+1.2)+/-1.0)x10(-6). The charge asymmetries are A(pi +/- pi 0)=-0.03(-0.17)(+0.18)+/-0.02 and A(K +/- pi 0)=-0.09+/-0.09+/-0.01. We place a 90% confidence-level upper limit on the branching fraction B(B-0-->pi(0)pi(0)) of 3.6x10(-6) .
| Type: | Article |
|---|---|
| Title: | Observation of the decay B-+/- -> pi(+/-)pi(0), study of B-+/- -> K-+/-pi(0), and search for B-0 -> pi(0)pi(0) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.91.021801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.91.021801 |
| Language: | English |
| Additional information: | © 2003 The American Physical Society |
| 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/1303627 |
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