Collaboration, D;
Abazov, V;
(2007)
Observation and Properties of L=1 B_1 and B_2* Mesons.
Physical Review Letters
, 99
(17)
, Article 172001. 10.1103/PhysRevLett.99.172001.
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Abstract
Excited B mesons B_1 and B_2* are observed directly for the first time as two separate states in fully reconstructed decays to B+(*) pi-. The mass of B_1 is measured to be (5720.6 +- 2.4 +- 1.4) MeV/c^2 and the mass difference DeltaM between B_2* and B_1 is (26.2 +- 3.1 +- 0.9) MeV/c^2, giving the mass of the B_2* as (5746.8 +- 2.4 +- 1.7) MeV/c^2. The production rate for B_1 and B_2* mesons is determined to be a fraction (13.9 +- 1.9 +- 3.2)% of the production rate of the B+ meson.
| Type: | Article |
|---|---|
| Title: | Observation and Properties of L=1 B_1 and B_2* Mesons |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.99.172001 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.99.172001 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| 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/1374309 |
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