Aaltonen, T;
Adelman, J;
Akimoto, T;
Alvarez Gonzalez, B;
Amerio, S;
Amidei, D;
Anastassov, A;
... CDF Collaboration; + view all
(2009)
Evidence for a Narrow Near-Threshold Structure in the J/psi phi Mass Spectrum in B+ -> J/psi phi K+ Decays.
Physical Review Letters
, 102
(24)
, Article 242002. 10.1103/PhysRevLett.102.242002.
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Abstract
Evidence is reported for a narrow structure near the J/psi phi threshold in exclusive B+ -> J/psi phi K+ decays produced in (p) over barp collisions at root s = 1.96 TeV. A signal of 14 +/- 5 events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of 2.7 fb(-1), collected by the CDF II detector. The mass and natural width of the structure are measured to be 4143.0 +/- 2.9(stat) +/- 1.2(syst) MeV/c(2) and 11.7(-5.0)(+8.3)(stat) +/- 3.7(stat) Mev/c(2).
| Type: | Article |
|---|---|
| Title: | Evidence for a Narrow Near-Threshold Structure in the J/psi phi Mass Spectrum in B+ -> J/psi phi K+ Decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.102.242002 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.102.242002 |
| 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: | MESONS, QCD |
| 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/152381 |
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