Aaltonen, T;
Adelman, J;
Akimoto, T;
Albrow, MG;
Gonzalez, BA;
Amerio, S;
Amidei, D;
... CDF Collaboration, The; + view all
(2008)
First observation of the decay B-s(0)-> Ds-Ds+ and measurement of its branching ratio.
Physical Review Letters
, 100
(2)
, Article 021803. 10.1103/PhysRevLett.100.021803.
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Abstract
We report the observation of the exclusive decay B-s(0)-> Ds-Ds+ at the 7.5 standard deviation level using 355 pb(-1) of data collected by the CDF II detector in p (p) over bar collisions at root s =1.96 TeV at the Fermilab Tevatron. We measure the relative branching ratio B(B-s(0)-> Ds-Ds+)/B(B-0 -> D-Ds+)=1.44(-0.44)(+0.48). Using the world average value for B(B-0 -> D-Ds+), we find B(B-s(0)-> Ds-Ds+)=(9.4(-4.2)(+4.4))x10(-3). This provides a lower bound Delta Gamma(CP)(s)/Gamma(s)>= 2B(B-s(0)-> Ds-Ds+)> 1.2x10(-2) at 95% C.L.
| Type: | Article |
|---|---|
| Title: | First observation of the decay B-s(0)-> Ds-Ds+ and measurement of its branching ratio |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.100.021803 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.100.021803 |
| Additional information: | © 2008 The American Physical Society |
| Keywords: | HADRONIC COLLISIONS, CROSS-SECTION, CDF |
| 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/131688 |
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