Aubert, B;
Barate, R;
Boutigny, D;
Couderc, F;
Gaillard, JM;
Hicheur, A;
Karyotakis, Y;
... BaBar Collaboration; + view all
(2004)
Bound on the ratio of decay amplitudes for (B)over-bar(0)-> J/psi K*(0) and B-0 -> J/psi K*(0).
PHYS REV LETT
, 93
(8)
, Article 081801. 10.1103/PhysRevLett.93.081801.
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Abstract
We have measured the time-dependent decay rate for the process B-->J/psiK(*0)(892) in a sample of about 88x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. In this sample we study flavor-tagged events in which one neutral B meson is reconstructed in the J/psiK(*0) or J/psi(K) over bar (*0) final state. We measure the coefficients of the cosine and sine terms in the time-dependent asymmetries for J/psiK(*0) and J/psi(K) over bar (*0), find them to be consistent with the standard model expectations, and set upper limits at 90% confidence level (C.L.) on the decay amplitude ratios \A((B) over bar (0)-->J/psiK(*0))//\A(B-0-->J/psiK(*0))\<0.26 and \A(B-0-->J/psi(K) over bar (*0))\/\A((B) over bar (0)-->J/psi(K) over bar (*0))\<0.32. For a single ratio of wrong-flavor to favored amplitudes for B-0 and (B) over bar (0) combined, we obtain an upper limit of 0.25 at 90% C.L.
| Type: | Article |
|---|---|
| Title: | Bound on the ratio of decay amplitudes for (B)over-bar(0)-> J/psi K*(0) and B-0 -> J/psi K*(0) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.93.081801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.93.081801 |
| Language: | English |
| Additional information: | The American Physical Society |
| Keywords: | CP-VIOLATION |
| 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/1303676 |
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