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Properties of l=1 B-1 and B*(2) Mesons
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2007 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 99, no 17, 172001-1-172001-7 p.Article in journal (Refereed) Published
Abstract [en]

This Letter presents the first strong evidence for the resolution of the excited B mesons B-1 and B-2(*) 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 Delta M 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.

Place, publisher, year, edition, pages
2007. Vol. 99, no 17, 172001-1-172001-7 p.
Keyword [en]
EXCITED HEAVY MESONS, LIGHT MESONS, B-MESONS, DECAYS, DETECTOR, PHYSICS, SYSTEM
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-35480DOI: 10.1103/PhysRevLett.99.172001ISI: 000250506000019Scopus ID: 2-s2.0-35549002826OAI: oai:DiVA.org:kth-35480DiVA: diva2:428771
Note
QC 20110701Available from: 2011-07-01 Created: 2011-07-01 Last updated: 2017-12-11Bibliographically approved

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Strandberg, Jonas

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