Observation of Associated Near-side and Away-side Long-range Correlations in sqrt(s_NN)=5.02 TeV Proton-lead Collisions with the ATLAS Detector

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

doi:10.1103/PhysRevLett.110.182302

Journal articles

Observation of Associated Near-side and Away-side Long-range Correlations in sqrt(s_NN)=5.02 TeV Proton-lead Collisions 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 C. Weydert ¹ C. Biscarat ² G. Rahal ² D. Boumediene ³ Emmanuel Busato ³ D. Calvet ³ S. Calvet ³ Reina Coromoto Camacho Toro ³ J. Donini ³ E. Dubreuil ³ Ph. Gris ³ N. Ghodbane ³ C. Guicheney ³ H. Liao ³ D. Pallin ³ Daniela Paredes Hernández ³ F. Podlyski ³ C. Santoni ³ Timothée Theveneaux-Pelzer ³ Loïc Valery ³ F. Vazeille ³ S. Abdel Khalek ⁴ N. Andari ⁴ E. Augé ⁴ M. Benoit ⁴ S. Binet ⁴ C. Bourdarios ⁴ C. de la Taille ⁴ J.B. de Vivie de Regie ⁴ L. Duflot ⁴ M. Escalier ⁴ L. Fayard ⁴ D. Fournier ⁴ J.-F. Grivaz ⁴ S. Henrot-Versillé ⁴ J. Hrivnac ⁴ L. Iconomidou-Fayard ⁴ J. Idarraga ⁴ M. Kado ⁴ N. Lorenzo Martinez ⁴ A. Lounis ⁴ N. Makovec ⁴ F. Niedercorn ⁴ L. Poggioli ⁴ P. Puzo ⁴ A. Renaud ⁴ D. Rousseau ⁴ G. Rybkin ⁴ J.B. Sauvan ⁴ J. Schaarschmidt ⁴ A.C. Schaffer ⁴ L. Serin ⁴ S. Simion ⁴ R. Tanaka ⁴ M. Teinturier ⁴ J.J. Veillet ⁴ D. Zerwas ⁴ Z. Zhang 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 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 M. Barbero 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 Y. Nagai ⁶ J. Odier ⁶ P. Pralavorio ⁶ A. Rozanov ⁶ T. Serre ⁶ M. Talby ⁶ N. Tannoury ⁶ E. Tiouchichine ⁶ S. Tisserant ⁶ J. Toth ⁶ F. Touchard ⁶ M. Ughetto ⁶ L. Vacavant ⁶ F. Vannucci ⁷

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

2 CC-IN2P3 - Centre de Calcul de l'IN2P3

3 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

4 LAL - Laboratoire de l'Accélérateur Linéaire

5 LAPP - Laboratoire d'Annecy de Physique des Particules

6 CPPM - Centre de Physique des Particules de Marseille

7 APC - Neutrinos

LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies, APC (UMR_7164) - AstroParticule et Cosmologie

Abstract : Two-particle correlations in relative azimuthal angle (Delta-phi) and pseudorapidity (Delta-eta) are measured in sqrt(s_NN) = 5.02 TeV p+Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1 mub^-1 of data as a function of p_T and the transverse energy (SumE_T) summed over 3.1 < eta < 4.9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2<|Delta-eta|<5) near-side (Delta-phi ~ 0) correlation that grows rapidly with increasing SumE_T. A long-range away-side (Delta-phi ~ pi) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small SumE_T, is found to match the near-side correlation in magnitude, shape (in Delta-eta and Delta-phi) and SumE_T dependence. The resultant Delta-phi correlation is approximately symmetric about pi/2, and is consistent with a cos(2Delta-phi) modulation for all SumE_T ranges and particle p_T. The amplitude of this modulation is comparable in magnitude and p_T dependence to similar modulations observed in heavy-ion collisions, suggestive of final-state collective effects in high multiplicity events.

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Journal articles

Domain :

Physics [physics] / High Energy Physics - Experiment [hep-ex]

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http://hal.in2p3.fr/in2p3-00768613
Contributor : Emmanuelle Vernay <>
Submitted on : Saturday, December 22, 2012 - 11:13:35 AM
Last modification on : Wednesday, September 23, 2020 - 4:36:44 AM

Observation of Associated Near-side and Away-side Long-range Correlations in sqrt(s_NN)=5.02 TeV Proton-lead Collisions with the ATLAS Detector

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Observation of Associated Near-side and Away-side Long-range Correlations in sqrt(s_NN)=5.02 TeV Proton-lead Collisions with the ATLAS Detector

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