Opposite-side flavour tagging of B mesons at the LHCb experiment

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doi:10.1140/epjc/s10052-012-2022-1

The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B+→J/ψK+, B0→J/ψK∗0 and B0→D∗-μ+ν μ decay modes with 0.37 fb-1 of data collected in pp collisions at [Formula: see text] during the 2011 physics run. The opposite-side tagging power is determined in the B+→J/ψK+ channel to be (2.10±0.08±0.24) %, where the first uncertainty is statistical and the second is systematic.

Aaij, R., Beteta, C.a., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2012). Opposite-side flavour tagging of B mesons at the LHCb experiment. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 72(6), 2022 [10.1140/epjc/s10052-012-2022-1].