Search for supersymmetry in a final state containing two photons and missing transverse momentum in [Formula: see text] = 13 TeV [Formula: see text] collisions at the LHC using the ATLAS detector

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2016-09, Vol.76 (9), p.517
• Main Authors: Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, O S, Abraham, N L, Abramowicz, H, Abreu, H, Abreu, R, Abulaiti, Y, Acharya, B S, Adachi, S, Adamczyk, L, Adams, D L, Adelman, J, Adomeit, S, Adye, T, Affolder, A A, Agatonovic-Jovin, T, Agricola, J, Aguilar-Saavedra, J A, Ahlen, S P, Ahmadov, F, Aielli, G, Akerstedt, H, Åkesson, T P A, Akimov, A V, Alberghi, G L, Albert, J, Albrand, S, Verzini, M J Alconada, Aleksa, M, Aleksandrov, I N, Alexa, C, Alexander, G, Alexopoulos, T, Alhroob, M, Ali, B, Aliev, M, Alimonti, G, Alison, J, Alkire, S P, Allbrooke, B M M, Allen, B W, Allport, P P, Aloisio, A, Alonso, A, Alonso, F, Alpigiani, C, Alshehri, A A, Alstaty, M, Gonzalez, B Alvarez, Piqueras, D Álvarez, Alviggi, M G, Amadio, B T, Amako, K, Coutinho, Y Amaral, Amelung, C, Amidei, D, Santos, S P Amor Dos, Amorim, A, Amoroso, S, Amundsen, G, Anastopoulos, C, Ancu, L S, Andari, N, Andeen, T, Anders, C F, Anders, G, Anders, J K, Anderson, K J, Andreazza, A, Andrei, V, Angelidakis, S, Angelozzi, I, Anger, P, Angerami, A, Anghinolfi, F, Anisenkov, A V, Anjos, N, Annovi, A, Antel, C, Antonelli, M, Antonov, A, Anulli, F, Aoki, M, Bella, L Aperio, Arabidze, G, Arai, Y, Araque, J P, Arce, A T H, Arduh, F A, Arguin, J-F, Argyropoulos, S, Arik, M, Armbruster, A J, Armitage, L J
• Format: Article
• Language: English
• Subjects: Analysis; Detection equipment; Particle accelerators; Particle collisions
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-016-4344-x

A search has been made for supersymmetry in a final state containing two photons and missing transverse momentum using the ATLAS detector at the Large Hadron Collider. The search makes use of [Formula: see text] of proton-proton collision data collected at a centre-of-mass energy of 13 TeV in 2015. Using a combination of data-driven and Monte-Carlo-based approaches, the Standard Model background is estimated to be [Formula: see text] events. No events are observed in the signal region; considering the expected background and its uncertainty, this observation implies a model-independent 95 % CL upper limit of 0.93 fb (3.0 events) on the visible cross section due to physics beyond the Standard Model. In the context of a generalized model of gauge-mediated supersymmetry breaking with a bino-like next-to-lightest supersymmetric particle, this leads to a lower limit of 1650 GeV on the mass of a degenerate octet of gluino states, independent of the mass of the lighter bino-like neutralino.