Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC

G. Aad , S. Abdel Khalek (1) , N. Andari (1) , E. Augé (1) , M. Benoit (1) , S. Binet (1) , C. Bourdarios (1) , C. de La Taille (1) , J.B. de Vivie de Regie (1) , L. Duflot (1) , M. Escalier (1) , L. Fayard (1) , D. Fournier (1) , J.-F. Grivaz (1) , S. Henrot-Versillé (1) , J. Hrivnac (1) , L. Iconomidou-Fayard (1) , J. Idarraga (1) , M. Kado (1) , N. Lorenzo Martinez (1) , A. Lounis (1) , N. Makovec (1) , F. Niedercorn (1) , L. Poggioli (1) , P. Puzo (1) , A. Renaud (1) , D. Rousseau (1) , G. Rybkin (1) , J.B. Sauvan (1) , J. Schaarschmidt (1) , A.C. Schaffer (1) , L. Serin (1) , S. Simion (1) , R. Tanaka (1) , M. Teinturier (1) , J.J. Veillet (1) , D. Zerwas (1) , Z. Zhang (1) , C. Biscarat (2) , G. Rahal (2) , S. Albrand (3) , M.L. Andrieux (3) , Q. Buat (3) , B. Clement (3) , J. Collot (3) , S. Crépé-Renaudin (3) , B. Dechenaux (3) , T. Delemontex (3) , P.A. Delsart (3) , M.H. Genest (3) , J.Y. Hostachy (3) , E. Laisne (3) , F. Ledroit-Guillon (3) , A. Lleres (3) , A. Lucotte (3) , F. Malek (3) , J. Stark (3) , X. Sun (3) , B. Trocmé (3) , J. Wang (3) , C. Weydert (3) , D. Boumediene (4) , Emmanuel Busato (4) , D. Calvet (4) , S. Calvet (4) , Reina Coromoto Camacho Toro (4) , Diane Cinca (4) , J. Donini (4) , Ph. Gris (4) , N. Ghodbane (4) , C. Guicheney (4) , H. Liao (4) , D. Pallin (4) , Daniela Paredes Hernández (4) , F. Podlyski (4) , C. Santoni (4) , F. Vazeille (4) , L. Aperio Bella (5) , B. Aubert (5) , N. Berger (5) , J. Colas (5) , M. Delmastro (5) , L. Di Ciaccio (5) , T.K.O. Doan (5) , S. Elles (5) , C. Goy (5) , T. Hryn'Ova (5) , S. Jézéquel (5) , H. Keoshkerian (5) , R. Lafaye (5) , J. Leveque (5) , V.P. Lombardo (5) , M. Maeno (5) , N. Massol (5) , P. Perrodo (5) , E. Petit (5) , H. Przysiezniak (5) , E. Richter-Was (5) , G. Sauvage (5) , E. Sauvan (5) , M. Schwoerer (5) , T. Todorov (5) , D. Tsionou (5) , I. Wingerter-Seez (5) , R. Zitoun (5) , S. Aoun (6) , C. P. Bee (6) , C. Bertella (6) , N. Bousson (6) , J. C. Clémens (6) , Y. Coadou (6) , F. Djama (6) , F. Etienne (6) , L. Feligioni (6) , D. Hoffmann (6) , F. Hubaut (6) , E. B. F. G. Knoops (6) , E. Le Guirriec (6) , B. Li (6) , J. Maurer (6) , E. Monnier (6) , J. Odier (6) , P. Pralavorio (6) , A. Rozanov (6) , M. Talby (6) , N. Tannoury (6) , S. Tisserant (6) , J. Toth (6) , F. Touchard (6) , L. Vacavant (6)

1 LAL - Laboratoire de l'Accélérateur Linéaire
2 CC-IN2P3 - Centre de Calcul de l'IN2P3
3 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
4 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
5 LAPP - Laboratoire d'Annecy de Physique des Particules
6 CPPM - Centre de Physique des Particules de Marseille

The luminosity calibration for the ATLAS detector at the LHC during pp collisions at sqrt(s) = 7 TeV in 2010 and 2011 is presented. Evaluation of the luminosity scale is performed using several luminosity-sensitive detectors, and comparisons are made of the long-term stability and accuracy of this calibration applied to the pp collisions at sqrt(s) = 7 TeV. A luminosity uncertainty of Delta L/L = +/- 3.4% is obtained for the 48 pb-1 of data delivered to ATLAS in 2010, and an uncertainty of Delta L/L = +/- 1.8% is obtained for the 5.6 fb-1 delivered in 2011.

Domaines: Physique des Hautes Energies - Expérience [hep-ex]

G. Aad, S. Abdel Khalek, N. Andari, E. Augé, M. Benoit, et al.. Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC. European Physical Journal C: Particles and Fields, 2013, 73, pp.2518. ⟨10.1140/epjc/s10052-013-2518-3⟩. ⟨in2p3-00789944⟩