Abulencia, A;
Acosta, D;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Ambrose, D;
... Zucchelli, S; + view all
(2006)
Evidence for the exclusive decay B-c(+/-)-> J/psi pi(+/-) and measurement of the mass of the B-c(+/-) meson.
Physical Review Letters
, 96
(8)
, Article 082002. 10.1103/PhysRevLett.96.082002.
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Abstract
We report the first evidence for a fully reconstructed decay mode of the B-c(+/-) meson in the channel B-c(+/-)-> J/psi pi(+/-), with J/psi ->mu(+)mu(-). The analysis is based on an integrated luminosity of 360 pb(-1) in p (p) over bar collisions at 1.96 TeV center of mass energy collected by the Collider Detector at Fermilab. We observe 14.6 +/- 4.6 signal events with a background of 7.1 +/- 0.9 events, and a fit to the J/psi pi(+/-) mass spectrum yields a B-c(+/-) mass of 6285.7 +/- 5.3(stat)+/- 1.2(syst) MeV/c(2). The probability of a peak of this magnitude occurring by random fluctuation in the search region is estimated as 0.012%.
| Type: | Article |
|---|---|
| Title: | Evidence for the exclusive decay B-c(+/-)-> J/psi pi(+/-) and measurement of the mass of the B-c(+/-) meson |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.082002 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.96.082002 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | B-C MESON, HADRONIC PRODUCTION, SEARCH, DETECTOR, UPGRADE, STATES |
| 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/132016 |
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