Measurement of the semileptonic t(t)over-bar + gamma production cross section in pp collisions at root s=8 TeV Universiteit Antwerpen Universiteit Gent Vrije Universiteit Brussel
A measurement of the cross section for top quark-antiquark (t (t) over bar) pairs produced in association with a photon in proton-proton collisions at root s = 8TeV is presented. The analysis uses data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.7 fb(1). The signal is de fined as the production of a t (t) over bar pair in association with a photon having a transverse energy larger than 25 GeV and ...