Measurement of the effective B<sup>0</sup><inf>s</inf> → J/ψK<sup>0</sup><inf>S</inf> lifetime
- R. Aaij,
- C. Abellan Beteta,
- B. Adeva,
- M. Adinolfi,
- C. Adrover,
- A. Affolder
- National Institute for Subatomic Physics,
- Ramon Llull University,
- University of Barcelona,
- University of Santiago de Compostela,
- University of Bristol,
- CNRS
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Abstract
This paper reports the first measurement of the effective B 0 s →J/ψK 0 S lifetime and an updated measurement of its time-integrated branching fraction. Both measurements are performed with a data sample, corresponding to an integrated luminosity of 1.0 fb -1 of pp collisions, recorded by the LHCb experiment in 2011 at a centre-of-mass energy of 7 TeV. The results are: τ eff J/ψK 0S = 1.75±0.12 (stat)±0.07 (syst) ps and B(B 0 S →J/ψK 0 S) = (1.97 ± 0.23) × 10 -5. For the latter measurement, the uncertainty includes both statistical and systematic sources.
Publication Information
Output type
Original language
EnglishPages from-to (Number of pages)
Pages 275-292 (18 pages)Journal (Volume, Issue Number)
Nuclear Physics B (Volume 873, Issue 2)Publication milestones
- Published - 11/08/2013
Publication status
ISSN
0550-3213Publication IDs
- Scopus: 84937644691
- WOS: 000320213800001