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Search for New Physics in the Dijet Mass Distribution using 1 fb^-1 of pp Collision Data at sqrt(s) = 7 TeV collected by 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 F. Bauer 3 N. Besson 3 N.M. Bolnet 3 M. Boonekamp 3 L. Chevalier 3 J. Ernwein 3 A.I. Etienvre 3 A. Formica 3 L. Gauthier 3 F. Giraud 3 C. Guyot 3 S. Hassani 3 W. Kozanecki 3 E. Lancon 3 J.F. Laporte 3 E. Le Menedeu 3 M. Legendre 3 B. Mansoulie 3 J.-P. Meyer 3 N. Morange 3 E. Mountricha 3 Thi Hong 3 R. Nicolaidou 3 A. Ouraou 3 D.M. Pomarede 3 B. Resende 3 C.R. Royon 3 Ph. Schune 3 J. Schwindling 3 O. Simard 3 M. Virchaux 3 C. Xu 3 J. Yu 3 Emmanuel Busato 4 D. Calvet 4 S. Calvet 4 Reina Coromoto Camacho Toro 4 Diane Cinca 5 R. Febbraro 4 N. Ghodbane 4 C. Guicheney 4 D. Pallin 4 F. Podlyski 4 C. Santoni 4 L. P. Says 4 F. Vazeille 4 L. Aperio Bella 6 B. Aubert 6 N. Berger 6 J. Colas 6 L. Di Ciaccio 6 T.K.O. Doan 6 S. Elles 6 P. Ghez 6 M. Gouanère 6 C. Goy 6 T. Guillemin 6 L. Helary 6 T. Hryn'Ova 6 G. Ionescu 6 A. Jérémie 6 S. Jézéquel 6 M. Kataoka 6 J. Labbe 6 R. Lafaye 6 J. Leveque 6 N. Massol 6 P. Perrodo 6 H. Przysiezniak 6 G. Sauvage 6 E. Sauvan 6 T. Todorov 6 D. Tsionou 6 I. Wingerter-Seez 6 R. Zitoun 6 Y. Zolnierowski 6 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 7 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 9 S. Binet 9 J.-B. Blanchard 9 C. Bourdarios 9 D. Breton 9 C. Collard 10 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 9 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, 11 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 12 C. P. Bee 12 C. Benchouk 12 K. Bernardet 12 N. Bousson 12 J. C. Clémens 12 Y. Coadou 12 P. Delpierre 12 F. Djama 12 F. Etienne 12 L. Feligioni 12 F. Henry-Couannier 12 D. Hoffmann 12 F. Hubaut 12 E.B. F. G. Knoops 12 E. Le Guirriec 12 B. Li 12 E. Monnier 12 J. Odier 12 E. Petit 12 P. Pralavorio 12 Z. Qian 12 A. Rozanov 12 M. Talby 12 N. Tannoury 12 S. Tisserant 12 J. Toth 12 F. Touchard 12 L. Vacavant 12
Abstract : Invariant mass distributions of jet pairs (dijets) produced in LHC proton-proton collisions at a centre-of-mass energy sqrt(s) = 7 TeV have been studied using a data set corresponding to an integrated luminosity of 1.0 fb^-1 recorded in 2011 by ATLAS. Dijet masses up to ~4 TeV are observed in the data, and no evidence of resonance production over background is found. Limits are set at 95% CL for several new physics hypotheses: excited quarks are excluded for masses below 2.99 TeV, axigluons are excluded for masses below 3.32 TeV, and colour octet scalar resonances are excluded for masses below 1.92 TeV.
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Submitted on : Monday, September 5, 2011 - 8:39:52 AM
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G. Aad, S. Albrand, M.L. Andrieux, B. Clement, J. Collot, et al.. Search for New Physics in the Dijet Mass Distribution using 1 fb^-1 of pp Collision Data at sqrt(s) = 7 TeV collected by the ATLAS Detector. Physics Letters B, Elsevier, 2012, 708, pp.37-54. ⟨10.1016/j.physletb.2012.01.035⟩. ⟨in2p3-00618985⟩

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