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Article Dans Une Revue Physics Letters B Année : 2012

Search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

G. Aad , S. Albrand (1) , M.L. Andrieux (1) , Q. Buat (1) , B. Clement (1) , J. Collot (1) , S. Crépé-Renaudin (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) , P. Martin (1) , F. Polci (1) , J. Stark (1) , X. Sun (1) , B. Trocmé (1) , J. Wang (1) , C. Weydert (1) , C. Biscarat (2) , E. Cogneras (2) , G. Rahal (2) , H. Abreu (3) , N. Andari (3) , C. Arnault (3) , E. Augé (3) , P. Barrillon (3) , M. Benoit , S. Binet (3) , J.-B. Blanchard (3) , C. Bourdarios (3) , D. Breton (3) , C. Collard (3) , C. de La Taille (3) , J.B. de Vivie de Regie (3) , Sara Diglio (3) , L. Duflot (3) , M. Escalier (3) , A.C. Falou (3) , L. Fayard (3) , D. Fournier (3) , J.-F. Grivaz (3) , M. Heller (3) , S. Henrot-Versillé (3) , J. Hrivnac (3) , L. Iconomidou-Fayard (3) , J. Idarraga (3) , M. Kado (3) , A. Lounis (3) , N. Makovec (3) , P. Matricon (3) , F. Niedercorn (3) , L. Poggioli (3) , P. Puzo (3) , A. Renaud (3) , D. Rousseau (3) , X. Ruan (3) , G. Rybkin (3) , J.B. Sauvan (3) , J. Schaarschmidt (3) , A.C. Schaffer (3) , L. Serin (3) , S. Simion (3) , R. Tanaka (3) , J.J. Veillet (3) , I. Vukotic (3) , F. Wicek (3) , D. Zerwas (3) , Zhiqing Zhang (3) , L. Aperio Bella (4) , B. Aubert (4) , N. Berger (4) , J. Colas (4) , M. Delmastro (4) , L. Di Ciaccio (4) , T.K.O. Doan (4) , S. Elles (4) , C. Goy (4) , L. Helary (4) , T. Hryn'Ova (4) , A. Jérémie (4) , S. Jézéquel (4) , M. Kataoka (4) , J. Labbe (4) , R. Lafaye (4) , J. Leveque (4) , V.P. Lombardo (4) , N. Massol (4) , P. Perrodo (4) , E. Petit (4) , H. Przysiezniak (4) , G. Sauvage (4) , E. Sauvan (4) , M. Schwoerer (4) , T. Todorov (4) , D. Tsionou (4) , I. Wingerter-Seez (4) , R. Zitoun (4) , Y. Zolnierowski (4) , D. Boumediene (5) , Emmanuel Busato (5) , D. Calvet (5) , S. Calvet (5) , Reina Coromoto Camacho Toro (5) , Diane Cinca (6) , J. Donini (5) , R. Febbraro (5) , N. Ghodbane (5) , C. Guicheney (5) , H. Liao (5) , D. Pallin (5) , F. Podlyski (5) , C. Santoni (5) , L. P. Says (5) , F. Vazeille (5) , S. Aoun (7) , S. Arfaoui (7) , C. P. Bee (7) , C. Benchouk (7) , C. Bertella (7) , N. Bousson (7) , J. C. Clémens (7) , Y. Coadou (7) , F. Djama (7) , F. Etienne (7) , L. Feligioni (7) , F. Henry-Couannier (7) , D. Hoffmann (7) , F. Hubaut (7) , E.B.F.G. Knoops (7) , E. Le Guirriec (7) , B. Li (7) , J. Maurer (7) , E. Monnier (7) , J. Odier (7) , P. Pralavorio (7) , Z. Qian (7) , A. Rozanov (7) , M. Talby (7) , N. Tannoury (7) , S. Tisserant (7) , J. Toth (7) , F. Touchard (7) , L. Vacavant (7) , T. Beau (8) , S. Bordoni (8) , G. Calderini (8) , A. Camard (8) , P. Cavalleri (8) , E. Chareyre (8) , S. de Cecco (8) , F. Derue (8) , D. Imbault (8) , M.W. Krasny (8) , D. Lacour (8) , B. Laforge (8) , O. Le Dortz (8) , J. Lellouch (8) , G. Marchiori (8) , I. Nikolic-Audit (8) , J. Ocariz (8) , M. Ridel (8) , L. Roos (8) , Ph. Schwemling (8) , Timothée Theveneaux-Pelzer (8) , S. Trincaz-Duvoid (8) , T.N. Trinh (8) , F. Vannucci (9)
G. Aad
E. Cogneras
E. Augé
M. Benoit
  • Fonction : Auteur
C. Collard
Sara Diglio
D. Rousseau
Zhiqing Zhang
  • Fonction : Auteur
  • PersonId : 829631
N. Berger
C. Goy
T. Hryn'Ova
S. Calvet
Diane Cinca
Y. Coadou
F. Vannucci
  • Fonction : Auteur

Résumé

This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at sqrt(s) = 7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb^-1 in the e+ e- and mu+ mu- channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Lambda^2, the following 95% CL lower limits are placed on the energy scale of llqq contact interactions: Lambda^- > 10.1 TeV (Lambda^+ > 9.4 TeV) in the electron channel and Lambda^- > 8.0 TeV (Lambda^+ > 7.0 TeV) in the muon channel for constructive (destructive) interference in the left-left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Lambda^4.

Dates et versions

in2p3-00653696 , version 1 (20-12-2011)

Identifiants

Citer

G. Aad, S. Albrand, M.L. Andrieux, Q. Buat, B. Clement, et al.. Search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector. Physics Letters B, 2012, 712, pp.40-58. ⟨10.1016/j.physletb.2012.04.026⟩. ⟨in2p3-00653696⟩
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