Measurement of the [bar over B][superscript 0][subscript s] Meson Lifetime in D[superscript +][subscript s] π[superscript −] Decays
Name
PhysRevLett.113.172001.pdf
Size
376.92 KB
Format
Adobe PDF
Checksum (MD5)
13664b0aa21f8063a73457195d3a4f6e
Author(s)
Counts, Ian Thomas Hunt
Ilten, Philip J
Date Issued
October 2014
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
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.113.172001
