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Measurement of the Azimuthal Angle Dependence of Inclusive Jet Yields in Pb plus Pb Collisions at root s(NN)=2.76 TeV 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: 2916
2013 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 111, no 15, 152301- p.Article in journal (Refereed) Published
Abstract [en]

Measurements of the variation of inclusive jet suppression as a function of relative azimuthal angle, Delta phi, with respect to the elliptic event plane provide insight into the path-length dependence of jet quenching. ATLAS has measured the Delta phi dependence of jet yields in 0.14 nb(-1) of root s(NN) = 2.76 TeV Pb + Pb collisions at the LHC for jet transverse momenta p(T) > 45 GeV in different collision centrality bins using an underlying event subtraction procedure that accounts for elliptic flow. The variation of the jet yield with Delta phi was characterized by the parameter, nu(jet)(2), and the ratio of out-of-plane (Delta phi similar to pi/2) to in-plane (Delta phi similar to 0) yields. Nonzero nu(jet)(2) values were measured in all centrality bins for p(T) < 160 GeV. The jet yields are observed to vary by as much as 20% between in-plane and out-of-plane directions.

Place, publisher, year, edition, pages
2013. Vol. 111, no 15, 152301- p.
Keyword [en]
Transverse-Momentum Dependence, Lead-Lead Collisions, Root-S-Nn=2.76 Tev, Nuclear Collisions, Anisotropic Flow, Plasma
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-135980DOI: 10.1103/PhysRevLett.111.152301ISI: 000326050000002Scopus ID: 2-s2.0-84885794810OAI: oai:DiVA.org:kth-135980DiVA: diva2:669194
Funder
Swedish Research Council
Note

QC 20131203. Author count: 2916

Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2017-12-06Bibliographically approved

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