Measurement of the effective B_s^0 -> J/psi K_S^0 lifetime

The LHCb Collaboration; Matthew Needham; Franz Muheim; Peter Clarke; Yuehong Xie; Stephan Eisenhardt; Greig Cowan

doi:10.1016/j.nuclphysb.2013.04.021

Measurement of the effective B_s^0 -> J/psi K_S^0 lifetime

The LHCb Collaboration, Matthew Needham, Franz Muheim, Peter Clarke, Yuehong Xie, Stephan Eisenhardt, Greig Cowan

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

This paper reports the first measurement of the effective B_s^0 -> J/{\psi} K_S^0 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: tau_J/{\psi}K_S^0 = 1.75 +/- 0.12 (stat) +/- 0.07 (syst) and BR(B_s^0 -> J/{\psi} K_S^0) = (1.97 +/- 0.23) X 10^{-5}. For the latter measurement, the uncertainty includes both statistical and systematic sources.

Original language	English
Pages (from-to)	, pp. 275-292
Journal	Nuclear physics b
Volume	873
Early online date	16 Apr 2013
DOIs	https://doi.org/10.1016/j.nuclphysb.2013.04.021
Publication status	Published - 11 Aug 2013

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title = "Measurement of the effective B_s^0 -> J/psi K_S^0 lifetime",

abstract = "This paper reports the first measurement of the effective B_s^0 -> J/{\psi} K_S^0 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: tau_J/{\psi}K_S^0 = 1.75 +/- 0.12 (stat) +/- 0.07 (syst) and BR(B_s^0 -> J/{\psi} K_S^0) = (1.97 +/- 0.23) X 10^{-5}. For the latter measurement, the uncertainty includes both statistical and systematic sources. ",

author = "Stephen Playfer and {The LHCb Collaboration} and Matthew Needham and Franz Muheim and Peter Clarke and Yuehong Xie and Stephan Eisenhardt and Greig Cowan",

year = "2013",

month = aug,

day = "11",

doi = "10.1016/j.nuclphysb.2013.04.021",

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volume = "873",

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journal = "Nuclear physics b",

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TY - JOUR

T1 - Measurement of the effective B_s^0 -> J/psi K_S^0 lifetime

AU - Playfer, Stephen

AU - The LHCb Collaboration

AU - Needham, Matthew

AU - Muheim, Franz

AU - Clarke, Peter

AU - Xie, Yuehong

AU - Eisenhardt, Stephan

AU - Cowan, Greig

PY - 2013/8/11

Y1 - 2013/8/11

N2 - This paper reports the first measurement of the effective B_s^0 -> J/{\psi} K_S^0 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: tau_J/{\psi}K_S^0 = 1.75 +/- 0.12 (stat) +/- 0.07 (syst) and BR(B_s^0 -> J/{\psi} K_S^0) = (1.97 +/- 0.23) X 10^{-5}. For the latter measurement, the uncertainty includes both statistical and systematic sources.

AB - This paper reports the first measurement of the effective B_s^0 -> J/{\psi} K_S^0 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: tau_J/{\psi}K_S^0 = 1.75 +/- 0.12 (stat) +/- 0.07 (syst) and BR(B_s^0 -> J/{\psi} K_S^0) = (1.97 +/- 0.23) X 10^{-5}. For the latter measurement, the uncertainty includes both statistical and systematic sources.

U2 - 10.1016/j.nuclphysb.2013.04.021

DO - 10.1016/j.nuclphysb.2013.04.021

M3 - Article

VL - 873

SP - , pp. 275-292

JO - Nuclear physics b

JF - Nuclear physics b

SN - 0550-3213

ER -

Measurement of the effective B_s^0 -> J/psi K_S^0 lifetime

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