Speaker
Samira Hassani
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
Description
Measurements of the cross sections of the production of pairs of electroweak gauge bosons at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale.
The ATLAS collaboration has performed detailed measurements of integrated and differential cross sections of the production of WW pairs in leptonic final states and no hadronic jets using data corresponding to 20.3 /fb at a centre-of-mass energy of 8 TeV. An extension of the measurement is presented, which covers also the WW+1jet production at 8 TeV. These measurements are compared to predictions at up to NNLO+NNLL in pQCD and provide constraints on new physics, by setting limits on anomalous triple gauge couplings.
In addition new studies of WZ and WW production in the semileptonic lnujj final state at 8 TeV are presented. These extend the measurements to high transverse momenta and are particularly sensitive to anomalous triple gauge couplings.
A first measurement of the WW cross section at a center-of-mass energy of 13 TeV using data corresponding to 3.2 /fb will be presented.
