- Main
Search for diphoton events with large missing transverse energy with 36 pb-1 of 7 TeV proton-proton collision data with the ATLAS detector
- Aad, G;
- Abbott, B;
- Abdallah, J;
- Abdelalim, AA;
- Abdesselam, A;
- Abdinov, O;
- Abi, B;
- Abolins, M;
- Abramowicz, H;
- Abreu, H;
- Acerbi, E;
- Acharya, BS;
- Adams, DL;
- Addy, TN;
- Adelman, J;
- Aderholz, M;
- Adomeit, S;
- Adragna, P;
- Adye, T;
- Aefsky, S;
- Aguilar-Saavedra, JA;
- Aharrouche, M;
- Ahlen, SP;
- Ahles, F;
- Ahmad, A;
- Ahsan, M;
- Aielli, G;
- Akdogan, T;
- Åkesson, TPA;
- Akimoto, G;
- Akimov, AV;
- Akiyama, A;
- Alam, MS;
- Alam, MA;
- Albert, J;
- Albrand, S;
- Aleksa, M;
- Aleksandrov, IN;
- Alessandria, F;
- Alexa, C;
- Alexander, G;
- Alexandre, G;
- Alexopoulos, T;
- Alhroob, M;
- Aliev, M;
- Alimonti, G;
- Alison, J;
- Aliyev, M;
- Allport, PP;
- Allwood-Spiers, SE;
- Almond, J;
- Aloisio, A;
- Alon, R;
- Alonso, A;
- Alviggi, MG;
- Amako, K;
- Amaral, P;
- Amelung, C;
- Ammosov, VV;
- Amorim, A;
- Amorós, G;
- Amram, N;
- Anastopoulos, C;
- Andari, N;
- Andeen, T;
- Anders, CF;
- Anderson, KJ;
- Andreazza, A;
- Andrei, V;
- Andrieux, ML;
- Anduaga, XS;
- Angerami, A;
- Anghinolfi, F;
- Anjos, N;
- Annovi, A;
- Antonaki, A;
- Antonelli, M;
- Antonov, A;
- Antos, J;
- Anulli, F;
- Aoun, S;
- Aperio Bella, L;
- Apolle, R;
- Arabidze, G;
- Aracena, I;
- Arai, Y;
- Arce, ATH;
- Archambault, JP;
- Arfaoui, S;
- Arguin, JF;
- Arik, E;
- Arik, M;
- Armbruster, AJ;
- Arnaez, O;
- Arnault, C;
- Artamonov, A;
- Artoni, G;
- Arutinov, D;
- Asai, S;
- Asfandiyarov, R
- et al.
Abstract
Making use of 36 pb-1 of proton-proton collision data at √s = 7 TeV, the ATLAS Collaboration has performed a search for diphoton events with large missing transverse energy. Observing no excess of events above the Standard Model prediction, a 95% Confidence Level (CL) upper limit is set on the cross section for new physics of σ < 0.38-0.65 pb in the context of a generalised model of gauge-mediated supersymmetry breaking (GGM) with a bino-like lightest neutralino, and of σ < 0.18-0.23 pb in the context of a specific model with one universal extra dimension (UED). A 95% CL lower limit of 560 GeV, for bino masses above 50 GeV, is set on the GGM gluino mass, while a lower limit of 1/R > 961 GeV is set on the UED compactification radius R. These limits provide the most stringent tests of these models to date.
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