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Measurement of the [bar over B][superscript 0][subscript s] Meson Lifetime in D[superscript +][subscript s] π[superscript −] Decays

Author(s)
Counts, Ian Thomas Hunt; Ilten, Philip J
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Abstract
We present a measurement of the ratio of the [bar over B][superscript 0][subscript s] meson lifetime, in the flavor-specific decay to D[superscript +][subscript s]π[superscript -], to that of the [bar over B][superscript 0] meson. The pp collision data used correspond to an integrated luminosity of 1fb[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][superscript 0][subscript s] lifetime to be τ([bar over B][superscript 0][subscript s]) = 1.535±0.015±0.014ps, 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.
Date issued
2014-10
URI
http://hdl.handle.net/1721.1/116611
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Aaij, R., et al. “Measurement of the [bar over B][superscript 0][subscript s] Meson Lifetime in D[superscript +][subscript s] π[superscript −] Decays.” Physical Review Letters, vol. 113, no. 17, Oct. 2014. © 2014 CERN, for the LHCb Collaboration.
Version: Final published version
ISSN
0031-9007
1079-7114

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