Abulencia, A;
Acosta, D;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Ambrose, D;
... Zucchelli, S; + view all
(2006)
Measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency.
Physical Review Letters
, 97
(6)
, Article 062003. 10.1103/PhysRevLett.97.062003.
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Abstract
We present the first precise measurement of the B-s(0)-(B) over bar (0)(s) oscillation frequency Delta m(s). We use 1 fb(-1) of data from p (p) over bar collisions at root s=1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. The sample contains signals of 3600 fully reconstructed hadronic B-s decays and 37 000 partially reconstructed semileptonic B-s decays. We measure the probability as a function of proper decay time that the B-s decays with the same, or opposite, flavor as the flavor at production, and we find a signal consistent with B-s(0)-(B) over bar (0)(s) oscillations. The probability that random fluctuations could produce a comparable signal is 0.2%. Under the hypothesis that the signal is due to B-s(0)-(B) over bar (0)(s) oscillations, we measure Delta m(s)=17.31(-0.18)(+0.33)(stat)+/- 0.07(syst) ps(-1) and determine vertical bar V-td/V-ts vertical bar=0.208(-0.002)(+0.001)(expt)(-0.006)(+0.008)(theor).
Type: | Article |
---|---|
Title: | Measurement of the B-s(0)-(B)over-bar(s)(0) oscillation frequency |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevLett.97.062003 |
Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.97.062003 |
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: | CP-VIOLATION, DETECTOR, PHYSICS, SEARCH, DECAYS |
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/131789 |
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