Heavy flavour production in ATLAS: Onia and open flavour hadrons

Proceedings for Beauty 2014 conference. Studies of heavy-flavour production at the LHC are interesting in order to understand the direct heavy-quarkonium production mechanism and test the predictions for $b\bar{b}$ production at the new energy regime. Recent ATLAS results using the charmonium states $\chi_{c1}$, $\chi_{c2}$ and $\psi'$ are presented. The measurements of the direct ($pp \to c\bar{c}\,X$) and indirect ($pp\to B \, X\to c\bar{c}\,X'$) charmonium production extend to higher $p_T$ than earlier measurements from CMS and LHCb, which is important in the comparison of the results with theoretical predictions from various models.