Top quark pair properties

Top quark pair properties (spincorrelations, charge asymmetry andcomplex final states) at LHC in ATLASContent :In protonprotoncollisions at the Large Hadron Collider, pairs of top and antitopquarks areexpected to be mostly produced through gluon fusion, in contrast to production at the Tevatron,where quark annihilation dominates. Making use of the large number of top quark pairs, wepresent measurements of the spin correlation between top and antitopquarks as well as of thetopquarkcharge asymmetry which constitute important tests of QCD and are sensitive to newphysics. We also discuss top production in association with bosons.