The task of B-physics in the ATLAS experiment is the study of hadrons, which include b-quarks, or b-hadrons. For decreasing the events rates are using a trigger system for selecting events. B-physics trigger selects events from two muons with opposite electric charges and threshold values of transverse momentum of 4 or 6 GeV.It is implemented via software algorithms included in the high level trigger(HLT). Monitoring is used to maintain proper operation of the B-physics trigger. There are two types of B-physics trigger monitoring : offline and online monitoring.
07.05.Kf Data analysis: algorithms and implementation; data management
$^1$Department of Nuclear Physics, Faculty of Physics, Lomonosov Moscow State University.\
$^2$P.N. Lebedev Physics Institute, Russian Academy of Sciences.
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