Properties of L=1 B1 and B2 mesons

Abazov, V. M. ; Mondal, N. K. ; et., al (2007) Properties of L=1 B1 and B2 mesons Physical Review Letters, 99 (17). 172001_1-172001_7. ISSN 0031-9007

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This Letter presents the first strong evidence for the resolution of the excited B mesons B1 and B2 as two separate states in fully reconstructed decays to B+π-. The mass of B1 is measured to be 5720.6v2.4±1.4 MeV/c2 and the mass difference ΔM between B2 and B1 is 26.2±3.1±0.9 MeV/c2, giving the mass of the B2 as 5746.8±2.4v1.7 MeV/c2. The production rate for B1 and B2 mesons is determined to be a fraction (13.9±1.9±3.2)% of the production rate of the B+ meson.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:92559
Deposited On:01 Jun 2012 11:38
Last Modified:01 Jun 2012 11:38

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