PT Journal AU LHCb Collaboration (Aaij, Rea Jashal, BK Martinez-Vidal, F Oyanguren, A Remon Alepuz, C Ruiz Vidal, J TI Identification of charm jets at LHCb SO Journal of Instrumentation JI J. Instrum. PY 2022 BP P02028 - 23pp VL 17 IS 2 DI 10.1088/1748-0221/17/02/P02028 LA English DE Analysis and statistical methods; Pattern recognition; cluster finding; calibration and fitting methods; Performance of High Energy Physics Detectors AB The identification of charm jets is achieved at LHCb for data collected in 2015-2018 using a method based on the properties of displaced vertices reconstructed and matched with jets. The performance of this method is determined using a dijet calibration dataset recorded by the LHCb detector and selected such that the jets are unbiased in quantities used in the tagging algorithm. The charm-tagging efficiency is reported as a function of the transverse momentum of the jet. The measured efficiencies are compared to those obtained from simulation and found to be in good agreement. ER