Searches for heavy long-lived sleptons and R-Hadrons with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV

G. Aad S. Albrand 1 M.L. Andrieux 1 Q. Buat 1 B. Clement 1 J. Collot 1 S. Crépé-Renaudin 1 B. Dechenaux 1 T. Delemontex 1 P.A. Delsart 1 M.H. Genest 1 J.Y. Hostachy 1 E. Laisne 1 F. Ledroit-Guillon 1 A. Lleres 1 A. Lucotte 1 F. Malek 1 J. Stark 1 X. Sun 1 B. Trocmé 1 J. Wang C. Weydert 1 C. Biscarat 2 E. Cogneras 2 G. Rahal 2 D. Boumediene 3 E. Busato 3 D. Calvet 3 S. Calvet 3 R. Camacho Toro 3 Diane Cinca 4 J. Donini 3 R. Febbraro 3 Ph. Gris 3 N. Ghodbane 3 C. Guicheney 3 H. Liao 3 D. Pallin 3 D. Paredes Hernandez 3 F. Podlyski 3 C. Santoni 3 F. Vazeille 3 S. Abdel Khalek 5 H. Abreu 5 N. Andari 5 C. Arnault 5 E. Augé 5 P. Barrillon 5 M. Benoit 5 S. Binet 5 C. Bourdarios 5 C. De La Taille 5 J.B. De Vivie De Regie 5 L. Duflot 5 M. Escalier 5 L. Fayard 5 D. Fournier 5 J.-F. Grivaz 5 S. Henrot-Versillé 5 J. Hrivnac 5 L. Iconomidou-Fayard 5 J. Idarraga 5 M. Kado 5 N. Lorenzo Martinez 5 A. Lounis 5 N. Makovec 5 P. Matricon 5 F. Niedercorn 5 L. Poggioli 5 P. Puzo 5 A. Renaud 5 D. Rousseau 5 G. Rybkin 5 J.B. Sauvan 5 J. Schaarschmidt 5 A.C. Schaffer 5 L. Serin 5 S. Simion 5 R. Tanaka 5 M. Teinturier 5 J.J. Veillet 5 I. Vukotic 5 F. Wicek 5 D. Zerwas 5 Z. Zhang 5 L. Aperio Bella 6 B. Aubert 6 N. Berger 6 J. Colas 6 M. Delmastro 6 L. Di Ciaccio 6 T.K.O. Doan 6 S. Elles 6 C. Goy 6 T. Hryn'Ova 6 S. Jézéquel 6 M. Kataoka 6 J. Labbe 6 R. Lafaye 6 J. Leveque 6 V.P. Lombardo 6 N. Massol 6 P. Perrodo 6 E. Petit 6 H. Przysiezniak 6 E. Richter-Was 6 G. Sauvage 6 E. Sauvan 6 M. Schwoerer 6 T. Todorov 6 D. Tsionou 6 I. Wingerter-Seez 6 R. Zitoun 6 F. Vannucci 7 S. Aoun 8 C. P. Bee 8 C. Bertella 8 N. Bousson 8 J. C. Clémens 8 Y. Coadou 8 F. Djama 8 F. Etienne 8 L. Feligioni 8 D. Hoffmann 8 F. Hubaut 8 E. B. F. G. Knoops 8 E. Le Guirriec 8 B. Li 8 J. Maurer 8 E. Monnier 8 J. Odier 8 P. Pralavorio 8 A. Rozanov 8 M. Talby 8 N. Tannoury 8 S. Tisserant 8 J. Toth 8 F. Touchard 8 L. Vacavant 8
Abstract : A search for long-lived particles is performed using a data sample of 4.7 fb-1 from proton-proton collisions at a centre-of-mass energy sqrt(s) = 7 TeV collected by the ATLAS detector at the LHC. No excess is observed above the estimated background and lower limits, at 95% confidence level, are set on the mass of the long-lived particles in different scenarios, based on their possible interactions in the inner detector, the calorimeters and the muon spectrometer. Long-lived staus in gauge-mediated SUSY-breaking models are excluded up to a mass of 300 GeV for tan beta = 5-20. Directly produced long-lived sleptons are excluded up to a mass of 278 GeV. R-hadrons, composites of gluino (stop, sbottom) and light quarks, are excluded up to a mass of 985 GeV (683 GeV, 612 GeV) when using a generic interaction model. Additionally two sets of limits on R-hadrons are obtained that are less sensitive to the interaction model for R-hadrons. One set of limits is obtained using only the inner detector and calorimeter observables, and a second set of limits is obtained based on the inner detector alone.
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Journal articles
Physics Letters B, Elsevier, 2013, 720, pp.277-308. <10.1016/j.physletb.2013.02.015>


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Submitted on : Thursday, November 8, 2012 - 8:00:30 AM
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G. Aad, S. Albrand, M.L. Andrieux, Q. Buat, B. Clement, et al.. Searches for heavy long-lived sleptons and R-Hadrons with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV. Physics Letters B, Elsevier, 2013, 720, pp.277-308. <10.1016/j.physletb.2013.02.015>. <in2p3-00749647>

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