TY - JOUR AU - ATLAS Collaboration (Aad, G. et al AU - Cabrera Urban, S. AU - Castillo Gimenez, V. AU - Costa, M. J. AU - Fassi, F. AU - Ferrer, A. AU - Fiorini, L. AU - Fuster, J. AU - Garcia, C. AU - Garcia Navarro, J. E. AU - Gonzalez de la Hoz, S. AU - Hernandez Jimenez, Y. AU - Higon-Rodriguez, E. AU - Irles Quiles, A. AU - Kaci, M. AU - King, M. AU - Lacasta, C. AU - Lacuesta, V. R. AU - March, L. AU - Marti-Garcia, S. AU - Mitsou, V. A. AU - Moles-Valls, R. AU - Oliver Garcia, E. AU - Pedraza Lopez, S. AU - Perez Garcia-Estañ, M. T. AU - Romero Adam, E. AU - Ros, E. AU - Salt, J. AU - Sanchez Martinez, V. AU - Soldevila, U. AU - Sanchez, J. AU - Torro Pastor, E. AU - Valero, A. AU - Valladolid Gallego, E. AU - Valls Ferrer, J. A. AU - Vos, M. PY - 2015 DA - 2015// TI - Search for Higgs Boson Pair Production in the gamma gamma b(b)over-bar Final State Using pp Collision Data at root s=8 TeV from the ATLAS Detector T2 - Phys. Rev. Lett. JO - Physical Review Letters SP - 081802 EP - 19pp VL - 114 IS - 8 PB - Amer Physical Soc AB - Searches are performed for resonant and nonresonant Higgs boson pair production in the gamma gamma b (b) over bar final state using 20 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section times branching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The difference derives from a modest excess of events, corresponding to 2.4 standard deviations from the background-only hypothesis. The limit observed in the search for a narrow X -> hh resonance ranges between 0.7 and 3.5 pb as a function of the resonance mass. SN - 0031-9007 UR - http://arxiv.org/abs/1406.5053 UR - https://doi.org/10.1103/PhysRevLett.114.081802 DO - 10.1103/PhysRevLett.114.081802 LA - English N1 - WOS:000350210600004 ID - ATLASCollaborationAad_etal2015 ER -