Abulencia, A;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Ambrose, D;
Amerio, S;
... CDF Collaboration; + view all
(2006)
Observation of (BsBs0)-B-0 oscillations.
Physical Review Letters
, 97
(24)
, Article 242003. 10.1103/PhysRevLett.97.242003.
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Abstract
We report the observation of B-s(0)-(B) over bar (0)(s) oscillations from a time-dependent measurement of the B-s(0)-(B) over bar (0)(s) oscillation frequency Delta m(s). Using a data sample of 1 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron, we find signals of 5600 fully reconstructed hadronic B-s decays, 3100 partially reconstructed hadronic B-s decays, and 61 500 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 for B-s(0)-(B) over bar (0)(s) oscillations. The probability that random fluctuations could produce a comparable signal is 8x10(-8), which exceeds 5 sigma significance. We measure Delta m(s)=17.77 +/- 0.10(stat)+/- 0.07(syst) ps(-1) and extract vertical bar V-td/V-ts vertical bar=0.2060 +/- 0.0007(Delta m(s))(-0.0060)(+0.0081)(Delta m(d)+theor).
Type: | Article |
---|---|
Title: | Observation of (BsBs0)-B-0 oscillations |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevLett.97.242003 |
Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.97.242003 |
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: | DETECTOR, PHYSICS |
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/151827 |
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