| Thème(s) : |
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Physique/Physique des Hautes Energies - Expérience
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| Titre : |
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Search for light scalar top quark pair production in final states with two leptons with the ATLAS detector in sqrt(s) = 7 TeV proton-proton collisions |
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| Auteur : |
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G. Aad, S. Aoun1, C. P. Bee1, C. Bertella1, N. Bousson1, J. C. Clémens1, Y. Coadou1, F. Djama1, F. Etienne1, L. Feligioni1, D. Hoffmann1, F. Hubaut1, E. B. F. G. Knoops1, E. Le Guirriec1, B. Li1, J. Maurer1, E. Monnier1, J. Odier1, P. Pralavorio1, A. Rozanov1, M. Talby1, N. Tannoury1, S. Tisserant1, J. Toth1, F. Touchard1, L. Vacavant1, L. Aperio Bella2, B. Aubert2, N. Berger2, J. Colas2, M. Delmastro2, L. Di Ciaccio2, T.K.O. Doan2, S. Elles2, C. Goy2, T. Hryn'Ova2, S. Jézéquel2, M. Kataoka2, J. Labbe2, R. Lafaye2, J. Leveque2, V.P. Lombardo2, N. Massol2, P. Perrodo2, E. Petit2, H. Przysiezniak2, G. Sauvage2, E. Sauvan2, M. Schwoerer2, T. Todorov2, D. Tsionou2, I. Wingerter-Seez2, R. Zitoun2, S. Albrand3, M.L. Andrieux3, Q. Buat3, B. Clement3, J. Collot3, S. Crépé-Renaudin3, B. Dechenaux3, T. Delemontex3, P.A. Delsart3, M.H. Genest3, J.Y. Hostachy3, E. Laisne3, F. Ledroit-Guillon3, A. Lleres3, A. Lucotte3, F. Malek3, J. Stark3, X. Sun3, B. Trocmé3, J. Wang3, C. Weydert3, F. Vannucci4, 5, S. Abdel Khalek6, H. Abreu6, N. Andari6, C. Arnault6, E. Augé6, P. Barrillon6, M. Benoit6, S. Binet6, C. Bourdarios6, C. de La Taille6, J.B. De Vivie De Regie6, L. Duflot6, M. Escalier6, L. Fayard6, D. Fournier6, J.-F. Grivaz6, S. Henrot-Versillé6, J. Hrivnac6, L. Iconomidou-Fayard6, J. Idarraga6, M. Kado6, N. Lorenzo Martinez6, A. Lounis6, N. Makovec6, P. Matricon6, F. Niedercorn6, L. Poggioli6, P. Puzo6, A. Renaud6, D. Rousseau6, G. Rybkin6, J.B. Sauvan6, J. Schaarschmidt6, A.C. Schaffer6, L. Serin6, S. Simion6, R. Tanaka6, M. Teinturier6, J.J. Veillet6, I. Vukotic6, F. Wicek6, D. Zerwas6, Z. Zhang6, D. Boumediene7, E. Busato7, D. Calvet7, S. Calvet7, R. Camacho Toro7, D. Cinca7, J. Donini7, R. Febbraro7, N. Ghodbane7, C. Guicheney7, H. Liao7, D. Pallin7, D. Paredes Hernandez7, F. Podlyski7, C. Santoni7, F. Vazeille7 |
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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 is presented for the pair production of light scalar top quarks in sqrt(s) = 7 TeV proton-proton collisions recorded with the ATLAS detector at the Large Hadron Collider. This analysis uses the full data sample collected during 2011 that corresponds to a total integrated luminosity of 4.7 fb-1. Light scalar top quarks are searched for in events with two opposite-sign leptons (e, mu), large missing transverse momentum and at least one jet in the final state. No excess over Standard Model expectations is found, and the results are interpreted under the assumption that the light scalar top decays to a b-quark in addition to an on-shell chargino whose decay occurs through a virtual W boson. If the chargino mass is 106 GeV, light scalar top quark masses up to 130 GeV are excluded for neutralino masses below 70 GeV. |
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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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| European Physical Journal C: Particles and Fields (Eur. Phys. J. C) |
| Publisher |
EDP Sciences: EPJ |
| ISSN |
1434-6044 (eISSN : 1434-6052) |
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| Volume : |
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72 |
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| Page/Article : |
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2237 |
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| Identifiant local : |
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CERN-PH-EP-2012-211 , LPSC12247 |
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| Commentaire : |
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See paper for full list of authors (21 pages total), 2 figures, 2 tables, submitted to European Physical Journal C |
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