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Measurement of Resonance Parameters of Orbitally Excited Narrow B-0 Mesons

Author(s)
Xie, Si; Gomez-Ceballos, Guillelmo; Knuteson, Bruce O.; Choudalakis, Georgios; Henderson, C.; Hahn, Kristian Allan; Paus, Christoph M. E.; Makhoul, Khaldoun; Bauer, Gerry P; ... Show more Show less
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Abstract
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[superscript -1] of data collected by the CDF II detector at the Fermilab Tevatron. The mass and width of the B[subscript 2][superscript *0] state are measured to be m(B[subscript 2][superscript *0])=5740.2[subscript -1.8][superscript +1.7](stat)[subscript -0.8][superscript +0.9](syst)  MeV/c[superscript 2] and Γ(B[subscript 2][superscript *0])=22.7[subscript -3.2][superscript +3.8](stat)-10.2[superscript +3.2](syst)  MeV/c[superscript 2]. The mass difference between the B[subscript 2][superscript *0] and B[subscript 1][superscript 0] states is measured to be 14.9[subscript -2.5][superscript +2.2](stat)[subscript -1.4][superscript +1.2](syst)  MeV/c[superscript 2], resulting in a B[subscript 1][superscript 0] mass of 5725.3[subscript -2.2] [superscript +1.6](stat)[subscript -1.5][superscript +1.4](syst)  MeV/c[superscript 2]. This is currently the most precise measurement of the masses of these states and the first measurement of the B[subscript 2][superscript *0] width.
Date issued
2009-03
URI
http://hdl.handle.net/1721.1/50636
Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Measurement of Resonance Parameters of Orbitally Excited Narrow B Mesons.” Physical Review Letters 102.10 (2009): 102003. c2010 American Physical Society
Version: Final published version
ISSN
0031-9007

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