Measurement of the effective B0s→J/ψK0S lifetime
ثبت نشده
چکیده
This paper reports the first measurement of the effective B0 s → J/ψK0 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/ψK0 S = 1.75 ± 0.12 (stat)± 0.07 (syst) ps and B(B0 s → J/ψK0 S)= (1.97 ± 0.23)× 10−5. For the latter measurement, the uncertainty includes both statistical and systematic sources. © 2013 CERN. Published by Elsevier B.V. All rights reserved.
منابع مشابه
Measurement of the effective B0s→K+K− lifetime
Article history: Received 2 November 2011 Received in revised form 20 December 2011 Accepted 22 December 2011 Available online 28 December 2011 Editor: W.-D. Schlatter A measurement of the effective Bs → K+K− lifetime is presented using approximately 37 pb−1 of data collected by LHCb during 2010. This quantity can be used to put constraints on contributions from processes beyond the Standard Mo...
متن کاملv 1 1 N ov 1 99 6 HU - SEFT R 1996 - 21 October 31 , 1996 ATLAS sensitivity range for the x s measurement
Previous results for the prospects of B0s mixing measurement in the ATLAS experiment at LHC are updated. The improved analysis method of the studied decay channels B0s → D − s π + and B0s → D − s a + 1 , combined with most recent values for the branching ratios and the B0s lifetime, leads to the new ATLAS sensitivity range for the xs measurement: x max s = 42. An extensive study is done in orde...
متن کاملMeasurement of the effective B0s→K+K− lifetime
Article history: Received 2 November 2011 Received in revised form 20 December 2011 Accepted 22 December 2011 Available online 28 December 2011 Editor: W.-D. Schlatter A measurement of the effective Bs → K+K− lifetime is presented using approximately 37 pb−1 of data collected by LHCb during 2010. This quantity can be used to put constraints on contributions from processes beyond the Standard Mo...
متن کامل