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Search for new phenomena in photon+jet events collected in proton--proton collisions at sqrt(s) = 8 TeV with the ATLAS detector

G. Aad L. Alio 1 M. Barbero 1 C. P. Bee 1 C. Bertella 1 N. Bousson 1 J. C. Clémens 1 Y. Coadou 1 F. Djama 1 F. Etienne 1 L. Feligioni 1 D. Hoffmann 1 F. Hubaut 1 E. B. F. G. Knoops 1 E. Le Guirriec 1 B. Li 1 J. Maurer 1 E. Monnier 1 Y. Nagai J. Odier 1 P. Pralavorio 1 A. Rozanov 1 T. Serre 1 M. Talby 1 N. Tannoury 1 E. Tiouchichine 1 S. Tisserant 1 J. Toth 1 F. Touchard 1 M. Ughetto 1 L. Vacavant 1 S. Abdel Khalek 2 E. Augé 2 A. Bassalat 2 S. Binet 2 C. Bourdarios 2 C. de la Taille 2 J.B. de Vivie de Regie 2 L. Duflot 2 M. Escalier 2 L. Fayard 2 D. Fournier 2 J.-F. Grivaz 2 T. Guillemin 2 S. Henrot-Versillé 2 J. Hrivnac 2 L. Iconomidou-Fayard 2 J. Idarraga 2 M. Kado 2 N. Lorenzo Martinez 2 A. Lounis 2 N. Makovec 2 L. Poggioli 2 P. Puzo 2 A. Renaud 2 D. Rousseau 2 G. Rybkin 2 J.B. Sauvan 2 J. Schaarschmidt 2 A.C. Schaffer 2 E. Scifo 2 L. Serin 2 S. Simion 2 R. Tanaka 2 M. Teinturier 2 H.L. Tran 2 D. Zerwas 2 Zhiqing Zhang 2 D. Boumediene 3 Emmanuel Busato 3 D. Calvet 3 S. Calvet 3 J. Donini 3 E. Dubreuil 3 N. Ghodbane 3 Ph. Gris 3 C. Guicheney 3 H. Liao 3 D. Pallin 3 Daniela Paredes Hernández 3 F. Podlyski 3 C. Santoni 3 Timothée Theveneaux-Pelzer 3 Loïc Valery 3 F. Vazeille 3 S. Albrand 4 J. Brown 4 Q. Buat 4 B. Clement 4 J. Collot 4 S. Crépé-Renaudin 4 B. Dechenaux 4 T. Delemontex 4 P.A. Delsart 4 C. Gabaldon 4 M.H. Genest 4 J.Y. Hostachy 4 E. Laisne 4 B.T. Le 4 F. Ledroit-Guillon 4 A. Lleres 4 A. Lucotte 4 F. Malek 4 C. Monini 4 J. Stark 4 X. Sun 4 B. Trocmé 4 N. Berger 5 M. Delmastro 5 L. Di Ciaccio 5 T.K.O. Doan 5 S. Elles 5 C. Goy 5 T. Hryn'Ova 5 S. Jézéquel 5 H. Keoshkerian 5 R. Lafaye 5 J. Leveque 5 V.P. Lombardo 5 N. Massol 5 E. Petit 5 H. Przysiezniak 5 G. Sauvage 5 E. Sauvan 5 M. Schwoerer 5 T. Todorov 5 I. Wingerter-Seez 5 R. Zitoun 5 O. Simard 5
Abstract : This Letter describes a model-independent search for the production of new resonances in photon + jet events using 20 inverse fb of proton--proton LHC data recorded with the ATLAS detector at a centre-of-mass energy of sqrt(s) = 8 TeV. The photon + jet mass distribution is compared to a background model fit from data; no significant deviation from the background-only hypothesis is found. Limits are set at 95% credibility level on generic Gaussian-shaped signals and two benchmark phenomena beyond the Standard Model: non-thermal quantum black holes and excited quarks. Non-thermal quantum black holes are excluded below masses of 4.6 TeV and excited quarks are excluded below masses of 3.5 TeV.
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G. Aad, L. Alio, M. Barbero, C. P. Bee, C. Bertella, et al.. Search for new phenomena in photon+jet events collected in proton--proton collisions at sqrt(s) = 8 TeV with the ATLAS detector. Physics Letters B, Elsevier, 2014, 728, pp.562-578. ⟨10.1016/j.physletb.2013.12.029⟩. ⟨in2p3-00861676⟩

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