%0 Journal Article %T Motivic Donaldson-Thomas invariants of the conifold and the refined topological vertex %A Andrew Morrison %A Sergey Mozgovoy %A Kentaro Nagao %A Balazs Szendroi %J Mathematics %D 2011 %I arXiv %X We compute the motivic Donaldson-Thomas theory of the resolved conifold, in all chambers of the space of stability conditions of the corresponding quiver. The answer is a product formula whose terms depend on the position of the stability vector, generalizing known results for the corresponding numerical invariants. Our formulae imply in particular a motivic form of the DT/PT correspondence for the resolved conifold. The answer for the motivic PT series is in full agreement with the prediction of the refined topological vertex formalism. %U http://arxiv.org/abs/1107.5017v1