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Study of jet quenching with Z + jet correlations in Pb-Pb and pp collisions at √sNN=5.02TeV

Title	Study of jet quenching with Z + jet correlations in Pb-Pb and pp collisions at √sNN=5.02TeV
Author	Sirunyan, A. M., Işıldak, Bora
Publication Date:	2017-08-23
Publication Place	- American Physical Society
Subject	Heavy-ion collisions, Quark-gluon plasma, Radiative energy-loss, Matter
Type	Periodical
Language	English
Digital	Yes
Manuscript	No
Library:	Özyeğin University
Library Asset ID	0031-9007
Record ID	db1b8f0d-6d73-4f54-9f9f-8996e408fdc9
Library Location	Natural and Mathematical Sciences
Date	2017-08-23
Notes	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text	The production of jets in association with Z bosons, reconstructed via the mu(+)mu(-) and e(+)e(-) decay channels, is studied in pp and, for the first time, in Pb-Pb collisions. Both data samples were collected by the CMS experiment at the LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The Pb-Pb collisions were analyzed in the 0%-30% centrality range. The back-to-back azimuthal alignment was studied in both pp and Pb-Pb collisions for Z bosons with transverse momentum p(T)(Z) > 60 GeV/c and a recoiling jet with p(T)(jet) > 30 GeV/c. The p(T) imbalance x(jZ) = p(T)(jet)/p(T)(Z), as well as the average number of jet partners per Z, R-jZ, was studied in intervals of p(T)(Z). The R-jZ is found to be smaller in Pb-Pb than in pp collisions, which suggests that in Pb-Pb collisions a larger fraction of partons associated with the Z bosons fall below the 30 GeV/c p(T)(jet) threshold because they lose energy.
DOI	10.1103/PhysRevLett.119.082301
Cilt	119

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Study of jet quenching with Z + jet correlations in Pb-Pb and pp collisions at √sNN=5.02TeV

Author Sirunyan, A. M., Işıldak, Bora

Publication Date 2017-08-23

Publication Place - American Physical Society

Subject Heavy-ion collisions, Quark-gluon plasma, Radiative energy-loss, Matter

Type Periodical

Language English

Digital Yes

Manuscript No

Library Özyeğin University

Library Asset ID 0031-9007

Record ID db1b8f0d-6d73-4f54-9f9f-8996e408fdc9

Library Location Natural and Mathematical Sciences

Date 2017-08-23

Notes Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Sample Text The production of jets in association with Z bosons, reconstructed via the mu(+)mu(-) and e(+)e(-) decay channels, is studied in pp and, for the first time, in Pb-Pb collisions. Both data samples were collected by the CMS experiment at the LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The Pb-Pb collisions were analyzed in the 0%-30% centrality range. The back-to-back azimuthal alignment was studied in both pp and Pb-Pb collisions for Z bosons with transverse momentum p(T)(Z) > 60 GeV/c and a recoiling jet with p(T)(jet) > 30 GeV/c. The p(T) imbalance x(jZ) = p(T)(jet)/p(T)(Z), as well as the average number of jet partners per Z, R-jZ, was studied in intervals of p(T)(Z). The R-jZ is found to be smaller in Pb-Pb than in pp collisions, which suggests that in Pb-Pb collisions a larger fraction of partons associated with the Z bosons fall below the 30 GeV/c p(T)(jet) threshold because they lose energy.

DOI 10.1103/PhysRevLett.119.082301

Cilt 119