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| Titre : |
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Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC |
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| Auteur : |
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G. Aad, S. Albrand1, Q. Buat1, B. Clement1, J. Collot1, S. Crépé-Renaudin1, B. Dechenaux1, T. Delemontex1, P.A. Delsart1, M.H. Genest1, J.Y. Hostachy1, E. Laisne1, F. Ledroit-Guillon1, A. Lleres1, A. Lucotte1, F. Malek1, J. Stark1, X. Sun1, B. Trocmé1, J. Wang1, C. Weydert1, C. Biscarat2, E. Cogneras2, G. Rahal2, D. Boumediene3, E. Busato3, D. Calvet3, S. Calvet3, R. Camacho Toro3, D. Cinca3, J. Donini3, R. Febbraro3, Ph. Gris3, N. Ghodbane3, C. Guicheney3, H. Liao3, D. Pallin3, D. Paredes Hernandez3, F. Podlyski3, C. Santoni3, F. Vazeille3, S. Abdel Khalek4, H. Abreu4, N. Andari4, C. Arnault4, E. Augé4, P. Barrillon4, M. Benoit4, S. Binet4, C. Bourdarios4, C. de La Taille4, J.B. De Vivie De Regie4, L. Duflot4, M. Escalier4, L. Fayard4, D. Fournier4, J.-F. Grivaz4, S. Henrot-Versillé, J. Hrivnac4, L. Iconomidou-Fayard4, J. Idarraga4, M. Kado4, N. Lorenzo Martinez4, A. Lounis4, N. Makovec4, P. Matricon4, F. Niedercorn4, L. Poggioli4, P. Puzo4, A. Renaud4, D. Rousseau4, G. Rybkin4, J.B. Sauvan4, J. Schaarschmidt4, A.C. Schaffer4, L. Serin4, S. Simion4, R. Tanaka4, M. Teinturier4, J.J. Veillet4, I. Vukotic4, F. Wicek4, D. Zerwas4, Z. Zhang4, F. Vannucci5, 6, L. Aperio Bella7, B. Aubert7, N. Berger7, J. Colas7, M. Delmastro7, L. Di Ciaccio7, T.K.O. Doan7, S. Elles7, C. Goy7, T. Hryn'Ova7, S. Jézéquel7, M. Kataoka7, J. Labbe7, R. Lafaye7, J. Leveque7, V.P. Lombardo7, N. Massol7, P. Perrodo7, E. Petit7, H. Przysiezniak7, E. Richter-Was7, G. Sauvage7, E. Sauvan7, M. Schwoerer7, T. Todorov7, D. Tsionou7, I. Wingerter-Seez7, R. Zitoun7, S. Aoun8, C. P. Bee8, C. Bertella8, N. Bousson8, J. C. Clémens8, Y. Coadou8, F. Djama8, F. Etienne8, L. Feligioni8, D. Hoffmann8, F. Hubaut8, E. B. F. G. Knoops8, E. Le Guirriec8, B. Li8, J. Maurer8, E. Monnier8, J. Odier8, P. Pralavorio8, A. Rozanov8, M. Talby8, N. Tannoury8, S. Tisserant8, J. Toth8, F. Touchard8, L. Vacavant8 |
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| Laboratoire : |
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| équipe(s) de recherche : |
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APC - Neutrinos |
| Résumé : |
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The results of a search for direct pair production of heavy top-quark partners in 4.7 fb-1 of integrated luminosity from pp collisions at sqrt(s) = 7 TeV collected by the ATLAS detector at the LHC are reported. Heavy top-quark partners decaying into a top quark and a neutral non-interacting particle are searched for in events with two leptons in the final state. No excess above the Standard Model expectation is observed. Limits are placed on the mass of a supersymmetric scalar top and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral non-interacting particle lighter than 100 GeV, is excluded at 95% confidence level. |
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| Collaboration/Projet : |
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ATLAS |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication ou d'écriture : |
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2012 |
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| Nom du périodique : |
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| Journal of High Energy Physics |
| Publisher |
Institute of Physics (IOP) |
| ISSN |
1126-6708 (eISSN : 1029-8479) |
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| Volume : |
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11 |
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| Page/Article : |
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94 |
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| Identifiant local : |
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LPSC12269 |
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| Commentaire : |
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See paper for full list of authors - 18 pages plus author list (40 pages total), 2 figures, 5 tables, submitted to Journal of High Energy Physics |
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