Aaltonen, T;
Abulencia, A;
Adelman, J;
Akimoto, T;
Albrow, MG;
Gonzalez, BA;
Amerio, S;
... CDF Collaboration; + view all
(2008)
Measurement of lifetime and decay-width difference in B-S(0)-> J/psi phi decays.
Physical Review Letters
, 100
(12)
, Article 121803. 10.1103/PhysRevLett.100.121803.
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Abstract
We measure the mean lifetime tau=2/(Gamma(L)+Gamma(H)) and the decay-width difference Delta Gamma=Gamma(L)-Gamma(H) of the light and heavy mass eigenstates of the B-s(0) meson, B-sL(0) and B-sH(0), in B-s(0)-> J/psi phi decays using 1.7 fb(-1) of data collected with the CDF II detector at the Fermilab Tevatron pp collider. Assuming CP conservation, a good approximation for the B-s(0) system in the standard model, we obtain Delta Gamma=0.076(-0.063)(+0.059)(stat)+/- 0.006(syst) ps(-1) and tau=1.52 +/- 0.04(stat)+/- 0.02(syst) ps, the most precise measurements to date. Our constraints on the weak phase and Delta Gamma are consistent with CP conservation.
| Type: | Article |
|---|---|
| Title: | Measurement of lifetime and decay-width difference in B-S(0)-> J/psi phi decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.100.121803 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.100.121803 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | ANGULAR-DISTRIBUTIONS, DETECTOR |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/131669 |
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