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Search for Diphoton Events with Large Missing Transverse Momentum in 1 fb^-1 of 7 TeV Proton-Proton Collision Data with the ATLAS Detector

G. Aad S. Albrand 1 M.L. Andrieux 1 B. Clement 1 J. Collot 1 S. Crépé-Renaudin 1 P.A. Delsart 1 J. Donini 1 J.Y. Hostachy 1 E. Laisne 1 F. Ledroit-Guillon 1 A. Lleres 1 A. Lucotte 1 F. Malek 1 P. Martin 1 F. Polci 1 J. Stark 1 X. Sun 1 B. Trocmé 1 C. Weydert 1 C. Biscarat 2 E. Cogneras 2 G. Rahal 2 H. Bachacou 3 L. Aperio Bella 4 B. Aubert 4 N. Berger 4 J. Colas 4 L. Di Ciaccio 4 T.K.O. Doan 4 S. Elles 4 P. Ghez 4 C. Goy 4 T. Guillemin 4 L. Helary 4 T. Hryn'Ova 4 A. Jérémie 4 S. Jézéquel 4 M. Kataoka 4 J. Labbe 4 R. Lafaye 4 J. Leveque 4 V.P. Lombardo 4 N. Massol 4 P. Perrodo 4 H. Przysiezniak 4 E. Richter-Was 4 G. Sauvage 4 E. Sauvan 4 T. Todorov 4 D. Tsionou 4 I. Wingerter-Seez 4 R. Zitoun 4 Y. Zolnierowski 4 Emmanuel Busato 5 D. Calvet 5 S. Calvet 5 Reina Coromoto Camacho Toro 5 Diane Cinca 6 R. Febbraro 5 N. Ghodbane 5 C. Guicheney 5 H. Liao 5 D. Pallin 5 F. Podlyski 5 C. Santoni 5 L. P. Says 5 F. Vazeille 5 T. Beau 7 S. Bordoni 7 G. Calderini 7 A. Camard 7 P. Cavalleri 7 E. Chareyre 7 S. de Cecco 7 F. Derue 7 D. Imbault 7 M.W. Krasny 7 D. Lacour 7 B. Laforge 7 O. Le Dortz 7 J. Lellouch G. Marchiori 7 I. Nikolic-Audit 7 J. Ocariz 7 M. Ridel 7 L. Roos 7 Ph. Schwemling 7 Timothée Theveneaux-Pelzer 7 S. Trincaz-Duvoid 7 T.N. Trinh 7 F. Vannucci 8 H. Abreu 9 N. Andari 9 C. Arnault 9 E. Augé 9 P. Barrillon 9 M. Benoit S. Binet 9 J.-B. Blanchard 9 C. Bourdarios 9 D. Breton 9 C. Collard C. de la Taille 9 J.B. de Vivie de Regie 9 S. Diglio 9 L. Duflot 9 M. Escalier 9 A.C. Falou 9 L. Fayard 9 D. Fournier 9 J.-F. Grivaz M. Heller 9 S. Henrot-Versillé 9 J. Hrivnac 9 L. Iconomidou-Fayard 9 J. Idarraga 9 M. Kado 9 A. Lounis 9 N. Makovec 9 P. Matricon 9 F. Niedercorn 9 L. Poggioli 9 P. Puzo 9 A. Renaud 9 D. Rousseau 9 X. Ruan 9 G. Rybkin 9 J.B. Sauvan 9 J. Schaarschmidt 9 A.C. Schaffer 9 L. Serin 9 S. Simion 9 R. Tanaka 9 J.J. Veillet 9 I. Vukotic 9 F. Wicek 9 D. Zerwas 9 Zhiqing Zhang 9 S. Aoun 10 C.P. Bee 10 C. Benchouk 10 K. Bernardet 10 N. Bousson 10 J. C. Clemens 10 Y. Coadou 10 F. Djama 10 F. Etienne 10 L. Feligioni 10 F. Henry-Couannier 10 D. Hoffmann 10 F. Hubaut 10 E. B. F. G. Knoops 10 Le Guirriec 10 B. Li 10 E. Monnier 10 J. Odier 10 E. Petit 10 P. Pralavorio 10 Z. Qian 10 A. Rozanov 10 M. Talby 10 N. Tannoury 10 S. Tisserant 10 J. Toth 10 F. Touchard 10
Abstract : A search for diphoton events with large missing transverse momentum has been performed using 1.07 fb^-1 of proton-proton collision data at sqrt{s} = 7 TeV recorded with the ATLAS detector. No excess of events was observed above the Standard Model prediction and 95% Confidence Level (CL) upper limits are set on the production cross section for new physics: sigma < (22-129) fb in the context of a generalised model of gauge-mediated supersymmetry breaking (GGM) with a bino-like lightest neutralino, sigma < (27-91) fb in the context of a minimal model of gauge-mediated supersymmetry breaking (SPS8) and (15-27) fb in the context of a specific model with one universal extra dimension (UED). A 95% CL lower limit of 805 GeV, for bino masses above 50 GeV, is set on the GGM gluino mass. Lower limits of 145 TeV and 1.23 TeV are set on the SPS8 breaking scale Lambda and on the UED compactification scale 1/R, respectively. These limits provide the most stringent tests of these models to date.
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Submitted on : Friday, November 18, 2011 - 9:05:02 AM
Last modification on : Saturday, June 5, 2021 - 3:34:12 AM

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G. Aad, S. Albrand, M.L. Andrieux, B. Clement, J. Collot, et al.. Search for Diphoton Events with Large Missing Transverse Momentum in 1 fb^-1 of 7 TeV Proton-Proton Collision Data with the ATLAS Detector. Physics Letters B, Elsevier, 2012, 710, pp.519-537. ⟨10.1016/j.physletb.2012.02.054⟩. ⟨in2p3-00642465⟩

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