AEE786EF-8F83-46AA-8842-4E36EA821A11GridPP4+ Tranche-III Northgrid-Lancaster staff grantResearch GrantST/M004821/10FA7FA45-02C9-433E-A750-12A20140208FSTFCINCOME_ACTUAL143869296EB51F-DBAD-47A9-8B2A-B546AD5AEE81Observation of top-quark pair production in association with a photon and measurement of the t t ¯ ? production cross section in p p collisions at s = 7 TeV using the ATLAS detectorPhysical Review D33e0e695ae15d049c8be3a3b2021c593Aad G2015-01-01http://dx.doi.org/10.1103/physrevd.91.0720071550-7998http://dx.doi.org/10.1103/physrevd.91.0720077Journal Article/Review56cca6b7c6a660.37986992