Aubert, B;
Barate, R;
Boutigny, D;
Couderc, F;
Gaillard, JM;
Hicheur, A;
Karyotakis, Y;
... BABAR Collaboration; + view all
(2004)
Study of B-+/--> J/psi pi(+/-) and B-+/--> J/psi K +/- decays: Measurement of the ratio of branching fractions and search for direct CP violation.
PHYS REV LETT
, 92
(24)
, Article 241802. 10.1103/PhysRevLett.92.241802.
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Abstract
We study B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays in a sample of about 89x10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We observe a signal of 244+/-20 B+/--->J/psipi(+/-) events and determine the ratio B(B+/--->J/psipi(+/-))/B(B+/--->J/psiK(+/-)) to be [5.37+/-0.45(stat)+/-0.11(syst)]%. The charge asymmetries for the B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays are determined to be A(pi)=0.123+/-0.085(stat)+/-0.004(syst) and A(K)=0.030+/-0.015(stat)+/-0.006(syst), respectively.
| Type: | Article |
|---|---|
| Title: | Study of B-+/--> J/psi pi(+/-) and B-+/--> J/psi K +/- decays: Measurement of the ratio of branching fractions and search for direct CP violation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.92.241802 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.92.241802 |
| Language: | English |
| Additional information: | 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.ucl.ac.uk/id/eprint/1303662 |
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