Search for diphoton events with large missing transverse energy in pp collisions at = 1.8 TeV
A search for new physics has been carried out in the channel pp → γγ + ET, as expected in various supersymmetric models. We require two photons with transverse energy EγT > 12 GeV and pseudorapidity |ηγ < 1.1. The distribution of missing transverse energy (ET) is consistent with background and no events have ET > 25 GeV. We set limits on production cross sections for selectron, sneutrino, and neutralino pairs, decaying into photons, which range from about 400 fb to 1 pb depending on the sparticle masses. A general limit of 185 fb (95% C.L.) is set on σ(pp → γγET + X), where eγT > 12 GeV, |ηγ| < 1.1, and ET > 25 GeV. © 1997 The American Physical Society.
Abachi, S; Abbott, B; Abolins, M; Acharya, BS; Adam, I; Adams, DL; Adams, M; Ahn, S; Aihara, H; Álvarez, G; Alves, GA; Amidi, E; Amos, N; Anderson, EW; Aronson, SH; Astur, R; Baarmand, MM; Baden, A; Balamurali, V; Balderston, J; Baldin, B; Banerjee, S; Bantly, J; Bartlett, JF; Bazizi, K; Belyaev, A; Bendich, J; Beri, SB; Bertram, I; Bezzubov, VA; Bhat, PC; Bhatnagar, V; Bhattacharjee, M; Bischoff, A; Biswas, N; Blazey, G; Blessing, S; Bloom, P; Boehnlein, A; Bojko, NI; Borcherding, F; Borders, J; Boswell, C; Brandt, A; Brock, R; Bross, A; Buchholz, D; Burtovoi, VS; Butler, JM; Carvalho, W; Casey, D; Castilla-Valdez, H; Chakraborty, D; Chang, SM; Chekulaev, SV; Chen, LP; Chen, W; Choi, S; Chopra, S; Choudhary, BC; Christenson, JH; Chung, M; Claes, D; Clark, AR; Cobau, WG; Cochran, J; Cooper, WE; Cretsinger, C; Cullen-Vidal, D; Cummings, MAC; Cutts, D; Dahl, OI; De, K; Del-Signore, K; Demarteau, M; Denisov, D; Denisov, SP; Diehl, HT; Diesburg, M; Di Loreto, G; Draper, P; Drinkard, J; Ducros, Y; Dudko, LV; Dugad, SR; Edmunds, D; Ellison, J; Elvira, VD; Engelmann, R; Eno, S; Eppley, G; Ermolov, P; Eroshin, OV; Evdokimov, VN; Fahey, S; Fahland, T; Fatyga, M; Fatyga, MK; Featherly, J; Feher, S
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