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Measurement of the production of neighbouring jets in lead-lead collisions at root s(NN)=2.76TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2882
2015 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 751, 376-395 p.Article in journal (Refereed) Published
Abstract [en]

This Letter presents measurements of correlated production of nearby jets in Pb+Pb collisions at root s(NN) = 2.76 TeV using the ATLAS detector at the Large Hadron Collider. The measurement was performed using 0.14 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-ktalgorithm with radius parameters d = 0.2, 0.3, and 0.4. R-Delta R was measured in different Pb+Pbcollision centrality bins, characterized by the total transverse energy measured in the forward calorimeters. Acentrality 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.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 751, 376-395 p.
Keyword [en]
Heavy Ions, QCD
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-180355DOI: 10.1016/j.physletb.2015.10.059ISI: 000365384600061ScopusID: 2-s2.0-84946912808OAI: oai:DiVA.org:kth-180355DiVA: diva2:893339
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20160112

Available from: 2016-01-12 Created: 2016-01-12 Last updated: 2016-01-12Bibliographically approved

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Jovicevic, JelenaKuwertz, EmmaLund-Jensen, BengtMorley, AnthonyStrandberg, Jonas
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