Measurement of the [bar over B][0 over s] → D[− over s]D[+ over s] and [bar over B][0 over s] → D[superscript −]D[+ over s] Effective Lifetimes
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Aaij-2014-Measurement of the B.pdf
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Author(s)
Williams, Michael
Ilten, Philip J
Date Issued
March 2014
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, et al. “Measurement of the [bar over B][0 over s] → D[− over s]D[+ over s] and [bar over B][0 over s] → D[superscript −]D[+ over s] Effective Lifetimes.” Physical Review Letters 112, no. 11 (March 2014). © 2014 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
The first measurement of the effective lifetime of the [bar over B][0 over s] meson in the decay[bar over B][0 over s] → D[− over s]D[+ over s] is reported using a proton-proton collision data set, corresponding to an integrated luminosity of 3 fb[superscript −1], collected by the LHCb experiment. The measured value of the [bar over B][0 over s] → D[− over s]D[+ over s] effective lifetime is 1.379 ± 0.026 ± 0.017 ps, where the uncertainties are statistical and systematic, respectively. This lifetime translates into a measurement of the decay width of the light [bar over B][0 over s] mass eigenstate of Γ[subscript L] = 0.725 ± 0.014 ± 0.009 ps[superscript −1]. The [bar over B][0 over s] lifetime is also measured using the flavor-specific [bar over B][0 over s] → D[superscript −]D[+ over s] decay to be 1.52 ± 0.15 ± 0.01 ps.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.112.111802
