PT Journal
AU LHCb Collaboration (Aaij, Rea
   Martinez-Vidal, F
   Oyanguren, A
   Ruiz Valls, P
   Sanchez Mayordomo, C
TI Measurement of the track reconstruction efficiency at LHCb
SO Journal of Instrumentation
JI J. Instrum.
PY 2015
BP P02007 - 23pp
VL 10
DI 10.1088/1748-0221/10/02/P02007
LA English
DE Large detector-systems performance; Pattern recognitio; cluster finding; calibration and fitting methods; Performance of High Energy Physics Detectors
AB The determination of track reconstruction efficiencies at LHCb using J/psi -> mu(+)mu(-) decays is presented. Efficiencies above 95% are found for the data taking periods in 2010, 2011, and 2012. The ratio of the track reconstruction efficiency of muons in data and simulation is compatible with unity and measured with an uncertainty of 0.8% for data taking in 2010, and at a precision of 0.4% for data taking in 2011 and 2012. For hadrons an additional 1.4% uncertainty due to material interactions is assumed. This result is crucial for accurate cross section and branching fraction measurements in LHCb.
ER