Measurement of the [bar over B][0 over s] Meson Lifetime in D[+ over s]π[superscript −] Decays
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PhysRevLett.113.172001.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Affolder, A.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Date Issued
October 2014
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Measurement of the [bar over B][0 over s] Meson Lifetime in D[+ over s]π[superscript −] Decays.” Physical Review Letters 113, no. 17 (October 2014). © 2014 CERN, for the LHCb Collaboration
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Final published version
Abstract
We present a measurement of the ratio of the [bar over B][0 over s] meson lifetime, in the flavor-specific decay to D[+ over s]π[superscript −], to that of the [bar over B][superscript 0] meson. The pp collision data used correspond to an integrated luminosity of 1 fb[superscript −1], collected with the LHCb detector, at a center-of-mass energy of 7 TeV. Combining our measured value of 1.010 ± 0.010 ± 0.008 for this ratio with the known [bar over B][superscript 0] lifetime, we determine the flavor-specific [bar over B][0 over s] lifetime to be τ([bar over B][0 over s]) = 1.535 ± 0.015 ± 0.014 ps, where the uncertainties are statistical and systematic, respectively. This is the most precise measurement to date, and is consistent with previous measurements and theoretical predictions.
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
http://dx.doi.org/10.1103/PhysRevLett.113.172001
