Review of ATLAS Heavy-Quark and Quarkonium results

Several recent results from the ATLAS experiment at the Large Hadron Collider are presented, using proton-proton collisions at s = 7 TeV. A new measurement of the differential production cross-section of B + mesons in the region || < 2.25 and 9 < p T < 120 GeV is described, together with the differential cross-sections of b-hadrons via the decay mode D * + -X. Compar- isons with next-to-leading-order and fixed-order-next-to-leading-logarithm predictions are made. Recent studies performed by ATLAS on the production of (nS), n=1, 2, 3, in the region |y| < 2.3 and p T < 70 GeV are shown. Theoretical production models are compared to differential crosssections and cross-section ratios for (nS). Finally, the associated production of quarkonia and vector bosons is discussed as a novel method for comparing colour singlet and colour octet production models. Results on J/ +W production are presented.