| Thème(s) : |
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Physique/Physique des Hautes Energies - Expérience
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| Titre : |
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Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at sqrt(s) = 7 TeV |
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| Auteur : |
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G. Aad, S. Albrand1, M.L. Andrieux1, 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, C. Weydert1, C. Biscarat2, E. Cogneras2, G. Rahal2, S. Abdel Khalek3, H. Abreu3, N. Andari3, C. Arnault3, E. Augé3, P. Barrillon3, M. Benoit3, S. Binet3, C. Bourdarios3, C. de La Taille3, J.B. De Vivie De Regie3, L. Duflot3, M. Escalier3, L. Fayard3, D. Fournier3, J.-F. Grivaz3, S. Henrot-Versillé3, J. Hrivnac3, L. Iconomidou-Fayard3, J. Idarraga3, M. Kado3, N. Lorenzo Martinez3, A. Lounis3, N. Makovec3, P. Matricon3, F. Niedercorn3, L. Poggioli3, P. Puzo3, A. Renaud3, D. Rousseau3, G. Rybkin3, J.B. Sauvan3, J. Schaarschmidt3, A.C. Schaffer3, L. Serin3, S. Simion3, R. Tanaka3, M. Teinturier3, J.J. Veillet3, I. Vukotic3, F. Wicek3, D. Zerwas3, Z. Zhang3, D. Boumediene4, E. Busato4, D. Calvet4, S. Calvet4, R. Camacho Toro4, D. Cinca4, J. Donini4, R. Febbraro4, Ph. Gris4, N. Ghodbane4, C. Guicheney4, H. Liao4, D. Pallin4, D. Paredes Hernandez4, F. Podlyski4, C. Santoni4, F. Vazeille4, F. Vannucci5, 6, S. Aoun7, C. P. Bee7, C. Bertella7, N. Bousson7, J. C. Clémens7, Y. Coadou7, F. Djama7, F. Etienne7, L. Feligioni7, D. Hoffmann7, F. Hubaut7, E. B. F. G. Knoops7, E. Le Guirriec7, B. Li7, J. Maurer7, E. Monnier7, J. Odier7, P. Pralavorio7, A. Rozanov7, M. Talby7, N. Tannoury7, E. Tiouchichine7, S. Tisserant7, J. Toth7, F. Touchard7, L. Vacavant7, L. Aperio Bella8, B. Aubert8, N. Berger8, J. Colas8, M. Delmastro8, L. Di Ciaccio8, T.K.O. Doan8, S. Elles8, C. Goy8, T. Hryn'Ova8, S. Jézéquel8, M. Kataoka8, J. Labbe8, R. Lafaye8, J. Leveque8, V.P. Lombardo8, N. Massol8, P. Perrodo8, E. Petit8, H. Przysiezniak8, E. Richter-Was8, G. Sauvage8, E. Sauvan8, M. Schwoerer8, T. Todorov8, D. Tsionou8, I. Wingerter-Seez8, R. Zitoun8 |
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| Laboratoire : |
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| équipe(s) de recherche : |
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APC - Neutrinos |
| Résumé : |
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A search for resonances produced in 7 TeV proton-proton collisions and decaying into top-quark pairs is described. In this Letter events where the top-quark decay produces two massive jets with large transverse momenta recorded with the ATLAS detector at the Large Hadron Collider are considered. Two techniques that rely on jet substructure are used to separate top-quark jets from those arising from light quarks and gluons. In addition, each massive jet is required to have evidence of an associated bottom-quark decay. The data are consistent with the Standard Model, and limits can be set on the production cross section times branching fraction of a Z' boson and a Kaluza-Klein gluon resonance. These limits exclude, at the 95% credibility level, Z' bosons with masses 0.70-1.00 TeV as well as 1.28-1.32 TeV and Kaluza-Klein gluons with masses 0.70-1.62 TeV. |
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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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2013 |
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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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1 |
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| Page/Article : |
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116 |
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| Identifiant local : |
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LPSC12318 |
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| Commentaire : |
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See paper for full list of authors - 35 pages plus author list (57 pages total), 15 figures, 4 tables, submitted to JHEP, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2012-15/ |
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