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Phys. Rev. Lett. 102, 102003 (2009) [7 pages]

Measurement of Resonance Parameters of Orbitally Excited Narrow B0 Mesons

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T. Aaltonen et al. CDF Collaboration
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Received 29 September 2008; published 12 March 2009

We report a measurement of resonance parameters of the orbitally excited (L=1) narrow B0 mesons in decays to B(*)+π- using 1.7  fb-1 of data collected by the CDF II detector at the Fermilab Tevatron. The mass and width of the B2*0 state are measured to be m(B2*0)=5740.2-1.8+1.7(stat)-0.8+0.9(syst)  MeV/c2 and Γ(B2*0)=22.7-3.2+3.8(stat)-10.2+3.2(syst)  MeV/c2. The mass difference between the B2*0 and B10 states is measured to be 14.9-2.5+2.2(stat)-1.4+1.2(syst)  MeV/c2, resulting in a B10 mass of 5725.3-2.2+1.6(stat)-1.5+1.4(syst)  MeV/c2. This is currently the most precise measurement of the masses of these states and the first measurement of the B2*0 width.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.102003
DOI:
10.1103/PhysRevLett.102.102003
PACS:
14.40.Nd, 12.40.Yx