Abstract
Measurements of differential production cross-sections of a \(Z\) boson in association with \(b\)-jets in \(pp\) collisions at \(\sqrt{s}=7\) TeV are reported. The data analysed correspond to an integrated luminosity of 4.6 fb\(^{-1}\) recorded with the ATLAS detector at the Large Hadron Collider. Particle-level cross-sections are determined for events with a \(Z\) boson decaying into an electron or muon pair, and containing \(b\)-jets. For events with at least one \(b\)-jet, the cross-section is presented as a function of the \(Z\) boson transverse momentum and rapidity, together with the inclusive \(b\)-jet cross-section as a function of \(b\)-jet transverse momentum, rapidity and angular separations between the \(b\)-jet and the \(Z\) boson. For events with at least two \(b\)-jets, the cross-section is determined as a function of the invariant mass and angular separation of the two highest transverse momentum \(b\)-jets, and as a function of the \(Z\) boson transverse momentum and rapidity. Results are compared to leading-order and next-to-leading-order perturbative QCD calculations.