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    Adelman, J.; Akerstedt, H.; Alexander, G.; Amor Dos Santos, S. P.; Arce, A. T. H.; Asquith, L.; Bartos, P.; Benekos, N.; Beresford, L.; Bertsche, D.; Besjes, G. J.; Besson, N.; Bloch, I.; Boisvert, V.; Bomben, M.; Brooks, W. K.; Brosamer, J.; Buat, Q.; Calace, N.; Camincher, C.; Capeans Garrido, M. D. M.; Caron, S.; Casper, D. W.; Castelijn, R.; Chelkov, G. A.; Cortiana, G.; De la Torre, H.; Deterre, C.; Doyle, A. T.; Dris, M.; Ernis, G.; Farthouat, P.; Fawcett, W. J.; Ferrari, A.; Frate, M.; Gkialas, I.; Glasman, C.; Grafström, P.; Gul, U.; Gutierrez, P.; Gutschow, C.; Han, L.; Hanke, P.; Heim, T.; Hodgson, P.; Hong, T. M.; Huth, J.; Idrissi, Z.; Iengo, P.; Jeng, G.-Y.; Kaczmarska, A.; Kanjir, L.; King, B. T.; King, S. B.; Kobayashi, A.; Kodys, P.; Kopp, A. K.; Kourkoumeli-Charalampidi, A.; Kowalewski, R.; Kupco, A.; Ladygin, E.; Lai, S.; Li, S.; Lichard, P.; Liu, Y.; Malek, F.; Maxfield, S. J.; Morley, A. K.; Mueller, R. S. P.; Nepomuceno, A. A.; Nisati, A.; Nooney, T.; Odaka, S.; Pagan Griso, S.; Plotnikova, E.; Reale, M.; Riegel, C. J.; Rimoldi, M.; Rizvi, E.; Ruan, X.; Savic, N.; Serin, L.; Shatalov, P. B.; Sickles, A. M.; Son, H.; Spangenberg, M.; Sumida, T.; Tayalati, Y.; Tokár, S.; Tsipolitis, G.; Valkar, S.; Van Nieuwkoop, J.; Viel, S.; Vranjes, N.; Vreeswijk, M.; Wakabayashi, J.; Wyatt, T. R.; Yang, H.; Zaman, A.; Zhuang, X.

    The journal of high energy physics, 1/9, Letnik: 2016, Številka: 9
    Journal Article

    A bstract Searches for new resonances decaying into two photons in the ATLAS experiment at the CERN Large Hadron Collider are described. The analysis is based on proton-proton collision data corresponding to an integrated luminosity of 3.2 fb −1 at s = 13 TeV recorded in 2015. Two searches are performed, one targeted at a spin-2 particle of mass larger than 500 GeV, using Randall-Sundrum graviton states as a benchmark model, and one optimized for a spin-0 particle of mass larger than 200 GeV. Varying both the mass and the decay width, the most significant deviation from the background-only hypothesis is observed at a diphoton invariant mass around 750 GeV with local significances of 3.8 and 3.9 standard deviations in the searches optimized for a spin-2 and spin-0 particle, respectively. The global significances are estimated to be 2.1 standard deviations for both analyses. The consistency between the data collected at 13 TeV and 8 TeV is also evaluated. Limits on the production cross section times branching ratio to two photons for the two resonance types are reported.