Measurement of the production of neighbouring jets in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector

G. Aad; S. Albrand; J. Brown; J. Collot; S. Crépé-Renaudin; B. Dechenaux; P.A. Delsart; C. Gabaldon; M.H. Genest; J.Y. Hostachy; F. Ledroit-Guillon; A. Lleres; A. Lucotte; F. Malek; C. Monini; J. Stark; B. Trocmé; M. Wu; G. Rahal; M.K. Ayoub; A. Bassalat; C. Becot; S. Binet; C. Bourdarios; J.B. de Vivie De Regie; D. Delgove; L. Duflot; M. Escalier; L. Fayard; D. Fournier; E.L. Gkougkousis; J.-F. Grivaz; T. Guillemin; F. Hariri; S. Henrot-Versillé; J. Hrivnac; L. Iconomidou-Fayard; M. Kado; A. Lounis; N. Makovec; N. Morange; C. Nellist; L. Poggioli; P. Puzo; A. Renaud; D. Rousseau; G. Rybkin; A.C. Schaffer; E. Scifo; L. Serin; S. Simion; R. Tanaka; H.L. Tran; D. Zerwas; Zhongkai Zhang; Y. Zhao; D. Boumediene; Emmanuel Busato; D. Calvet; S. Calvet; J. Donini; E. Dubreuil; N. Ghodbane; G. Gilles; Ph. Gris; C. Guicheney; H. Liao; D. Pallin; D. Paredes Hernandez; F. Podlyski; C. Santoni; Timothée Theveneaux-Pelzer; Loïc Valery; F. Vazeille; Z. Barnovska; N. Berger; M. Delmastro; L. Di Ciaccio; T.K.O. Doan; S. Elles; C. Goy; T. Hryn’ova; S. Jézéquel; I. Koletsou; R. Lafaye; J. Leveque; N. Massol; G. Sauvage; E. Sauvan; O. Simard; T. Todorov; I. Wingerter-Seez; L. Alio; M. Barbero; C. Bertella; J. C. Clémens; Y. Coadou; S. Diglio; F. Djama; L. Feligioni; J. Gao; D. Hoffmann; F. Hubaut; E. B. F. G. Knoops; E. Le Guirriec; B. Li; D. Madaffari; K. Mochizuki; E. Monnier; S. Muanza; Y. Nagai; P. Pralavorio; A. Rozanov; T. Serre; M. Talby; E. Tiouchichine; S. Tisserant; J. Toth; F. Touchard; M. Ughetto; L. Vacavant

doi:10.1016/j.physletb.2015.10.059

Measurement of the production of neighbouring jets in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector

G. Aad ¹ S. Albrand ² J. Brown ² J. Collot ² S. Crépé-Renaudin ² B. Dechenaux ² P.A. Delsart ² C. Gabaldon ² M.H. Genest ² J.Y. Hostachy ² F. Ledroit-Guillon ² A. Lleres ² A. Lucotte ² F. Malek ² C. Monini ² J. Stark ² B. Trocmé ² M. Wu ² G. Rahal ³ M.K. Ayoub ⁴ A. Bassalat ⁴ C. Becot ⁴ S. Binet ⁴ C. Bourdarios ⁴ J.B. de Vivie De Regie ⁴ D. Delgove ⁴ L. Duflot ⁴ M. Escalier ⁴ L. Fayard ⁴ D. Fournier ⁴ E.L. Gkougkousis ⁴ J.-F. Grivaz ⁴ T. Guillemin ⁴ F. Hariri ⁴ S. Henrot-Versillé ⁴ J. Hrivnac ⁴ L. Iconomidou-Fayard ⁴ M. Kado ⁴ A. Lounis ⁴ N. Makovec ⁴ N. Morange ⁴ C. Nellist ⁴ L. Poggioli ⁴ P. Puzo ⁴ A. Renaud ⁴ D. Rousseau ⁴ G. Rybkin ⁴ A.C. Schaffer ⁴ E. Scifo ⁴ L. Serin ⁴ S. Simion ⁴ R. Tanaka ⁴ H.L. Tran ⁴ D. Zerwas ⁴ Zhongkai Zhang ⁴ Y. Zhao ⁴ D. Boumediene ⁵ Emmanuel Busato ⁵ D. Calvet ⁵ S. Calvet ⁵ J. Donini ⁵ E. Dubreuil ⁵ N. Ghodbane ⁵ G. Gilles ⁵ Ph. Gris ⁵ C. Guicheney ⁵ H. Liao ⁵ D. Pallin ⁵ D. Paredes Hernandez ⁵ F. Podlyski ⁵ C. Santoni ⁵ Timothée Theveneaux-Pelzer ⁵ Loïc Valery ⁵ F. Vazeille ⁵ Z. Barnovska ⁶ N. Berger ⁶ M. Delmastro ⁶ L. Di Ciaccio ⁶ T.K.O. Doan ⁶ S. Elles ⁶ C. Goy ⁶ T. Hryn’ova ⁶ S. Jézéquel ⁶ I. Koletsou ⁶ R. Lafaye ⁶ J. Leveque ⁶ N. Massol ⁶ G. Sauvage ⁶ E. Sauvan ⁶ O. Simard ⁶ T. Todorov ⁶ I. Wingerter-Seez ⁶ L. Alio ¹ M. Barbero ¹ C. Bertella ¹ J. C. Clémens ¹ Y. Coadou ¹ S. Diglio ¹ F. Djama ¹ L. Feligioni ¹ J. Gao ¹ D. Hoffmann ¹ F. Hubaut ¹ E. B. F. G. Knoops ¹ E. Le Guirriec ¹ B. Li ¹ D. Madaffari ¹ K. Mochizuki ¹ E. Monnier ¹ S. Muanza ¹ Y. Nagai ¹ P. Pralavorio ¹ A. Rozanov ¹ T. Serre ¹ M. Talby ¹ E. Tiouchichine ¹ S. Tisserant ¹ J. Toth ¹ F. Touchard ¹ M. Ughetto ¹ L. Vacavant ¹

1 CPPM - Centre de Physique des Particules de Marseille

2 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

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

4 LAL - Laboratoire de l'Accélérateur Linéaire

5 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

6 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules

Abstract : This Letter presents measurements of correlated production of nearby jets in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV using the ATLAS detector at the Large Hadron Collider. The measurement was performed using 0.14 ${\rm nb}^{-1}$ of data recorded in 2011. The production of correlated jet pairs was quantified using the rate, $R_{\Delta R}$, of "neighbouring" jets that accompany "test" jets within a given range of angular distance, $\Delta R$, in the pseudorapidity--azimuthal angle plane. The jets were measured in the ATLAS calorimeter and were reconstructed using the anti-$k_{t}$ algorithm with radius parameters $d = 0.2$, $0.3$, and $0.4$. $R_{\Delta R}$ was measured in different Pb+Pb collision centrality bins, characterized by the total transverse energy measured in the forward calorimeters. A centrality dependence of $R_{\Delta R}$ is observed for all three jet radii with $R_{\Delta R}$ found to be lower in central collisions than in peripheral collisions. The ratios formed by the $R_{\Delta R}$ values in different centrality bins and the values in the 40-80 % centrality bin are presented.

Type de document :

Article dans une revue

Physics Letters B, Elsevier, 2015, 751, pp.376-395. 〈10.1016/j.physletb.2015.10.059〉

Domaine :

Physique [physics] / Physique des Hautes Energies - Expérience [hep-ex]

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http://hal.in2p3.fr/in2p3-01169684
Contributeur : Emmanuelle Vernay <>
Soumis le : mardi 30 juin 2015 - 08:45:09
Dernière modification le : mercredi 16 mai 2018 - 15:10:07

Measurement of the production of neighbouring jets in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector

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Measurement of the production of neighbouring jets in lead-lead collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector

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