Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Physics Letters B Année : 2013

Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector

G. Aad , S. Albrand (1) , Q. Buat (1) , B. Clement (1) , J. Collot (1) , S. Crépé-Renaudin (1) , B. Dechenaux (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) , J. Stark (1) , X. Sun (1) , B. Trocmé (1) , J. Wang (1) , C. Weydert (1) , C. Biscarat (2) , E. Cogneras (2) , G. Rahal (2) , S. Aoun (3) , C. P. Bee (3) , C. Bertella (3) , N. Bousson (3) , J. C. Clémens (3) , Y. Coadou (3) , F. Djama (3) , F. Etienne (3) , L. Feligioni (3) , D. Hoffmann (3) , F. Hubaut (3) , E. B. F. G. Knoops (3) , E. Le Guirriec (3) , B. Li (3) , J. Maurer (3) , E. Monnier (3) , J. Odier (3) , P. Pralavorio (3) , A. Rozanov (3) , M. Talby (3) , N. Tannoury (3) , S. Tisserant (3) , J. Toth (3) , F. Touchard (3) , L. Vacavant (3) , F. Vannucci (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) , A. Jérémie (5) , S. Jézéquel (5) , M. Kataoka (5) , J. Labbe (5) , R. Lafaye (5) , J. Leveque (5) , V.P. Lombardo (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. Abdel Khalek (6) , H. Abreu (6) , N. Andari (6) , C. Arnault (6) , E. Augé (6) , P. Barrillon (6) , M. Benoit (6) , S. Binet (6) , C. Bourdarios (6) , C. de La Taille (6) , J.B. de Vivie de Regie (6) , L. Duflot (6) , M. Escalier (6) , L. Fayard (6) , D. Fournier (6) , J.-F. Grivaz (6) , S. Henrot-Versillé (6) , J. Hrivnac (6) , L. Iconomidou-Fayard (6) , J. Idarraga (6) , M. Kado (6) , N. Lorenzo Martinez (6) , A. Lounis (6) , N. Makovec (6) , P. Matricon (6) , F. Niedercorn (6) , L. Poggioli (6) , P. Puzo (6) , A. Renaud (6) , D. Rousseau (6) , G. Rybkin (6) , J.B. Sauvan (6) , J. Schaarschmidt (6) , A.C. Schaffer (6) , L. Serin (6) , S. Simion (6) , R. Tanaka (6) , M. Teinturier (6) , J.J. Veillet (6) , I. Vukotic (6) , F. Wicek (6) , D. Zerwas (6) , D. Boumediene (7) , Emmanuel Busato (7) , D. Calvet (7) , S. Calvet (7) , Reina Coromoto Camacho Toro (7) , Diane Cinca (7) , J. Donini (7) , R. Febbraro (7) , N. Ghodbane (7) , C. Guicheney (7) , H. Liao (7) , D. Pallin (7) , Daniela Paredes Hernández (7) , F. Podlyski (7) , C. Santoni (7) , F. Vazeille (7)
G. Aad
E. Cogneras
Y. Coadou
J. Odier
  • Fonction : Auteur
  • PersonId : 1433897
F. Vannucci
  • Fonction : Auteur
N. Berger
C. Goy
T. Hryn'Ova
E. Augé
D. Rousseau

Résumé

Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at sqrt(s) = 2.76 TeV corresponding to an integrated luminosity of approximately 7 inverse microbarns, ATLAS has measured jets with a calorimeter over the pseudorapidity interval |eta| < 2.1 and over the transverse momentum range 38 < pT < 210 GeV. Jets were reconstructed using the anti-kt algorithm with values for the distance parameter that determines the nominal jet radius of R = 0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet "central-to-peripheral ratio," Rcp. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. Rcp varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC.

Dates et versions

in2p3-00723484 , version 1 (10-08-2012)

Identifiants

Citer

G. Aad, S. Albrand, Q. Buat, B. Clement, J. Collot, et al.. Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead-lead collisions at sqrt(s(NN)) = 2.76 TeV with the ATLAS detector. Physics Letters B, 2013, 719, pp.220-241. ⟨10.1016/j.physletb.2013.01.024⟩. ⟨in2p3-00723484⟩
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