Abulencia, A;
Acosta, D;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Ambrose, D;
... CDF Collaboration; + view all
(2006)
Observation of B-s(0)-> K+K- and measurements of branching fractions of charmless two-body decays of B-0 and B-s(0) mesons in pp collisions at root s=1.96 TeV.
PHYS REV LETT
, 97
(21)
, Article 211802. 10.1103/PhysRevLett.97.211802.
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Abstract
We search for decays of the type B-(s)(0)-> h(+)h('-) (where h,h(')=K or pi) in 180 pb(-1) of (p) over barp collisions collected at the Tevatron by the upgraded Collider Detector at Fermilab. We report the first observation of the new mode B-s(0)-> K+K- with a yield of 236 +/- 32 events, corresponding to (f(s)/f(d))xB(B-s(0)-> K+K-)/B(B-0 -> K+pi(-))=0.46 +/- 0.08(stat)+/- 0.07(syst), where f(s)/f(d) is the ratio of production fractions of B-s(0) and B-0. We find results in agreement with world averages for the B-0 modes, and set the following new limits at 90% C.L.: B(B-s(0)-> K-pi(+))< 5.6x10(-6) and B(B-s(0)->pi(+)pi(-))< 1.7x10(-6).
| Type: | Article |
|---|---|
| Title: | Observation of B-s(0)-> K+K- and measurements of branching fractions of charmless two-body decays of B-0 and B-s(0) mesons in pp collisions at root s=1.96 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.97.211802 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.97.211802 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | B DECAYS, PHYSICS, GAMMA |
| 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/131690 |
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