Abstract
Measurements of the associated production of a mathrm{Z} boson with at least one jet originating from a b quark in proton–proton collisions at sqrt{s} = 8,text {TeV} are presented. Differential cross sections are measured with data collected by the CMS experiment corresponding to an integrated luminosity of 19.8,text {fb}^{-1}. mathrm{Z} bosons are reconstructed through their decays to electrons and muons. Cross sections are measured as a function of observables characterizing the kinematics of the mathrm{b} jet and the mathrm{Z} boson. Ratios of differential cross sections for the associated production with at least one mathrm{b} jet to the associated production with any jet are also presented. The production of a mathrm{Z} boson with at least two mathrm{b} jets is investigated, and differential cross sections are measured for the dijet system. Results are compared to theoretical predictions, testing two different flavour schemes for the choice of initial-state partons.
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