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@ARTICLE{Acharya:225301,
author = {Acharya, Shreyasi and others},
title = {{M}easurement of jet radial profiles in {P}b$–${P}b
collisions at $\sqrt{s_{\rm {NN}}}=$ 2.76 {T}e{V}},
journal = {Physics letters / B B},
volume = {796},
issn = {0370-2693},
address = {Amsterdam},
publisher = {North-Holland Publ.},
reportid = {GSI-2020-00150, arXiv:1904.13118. CERN-EP-2019-079},
pages = {204 - 219},
year = {2019},
note = {30 pages, 5 captioned figures, 4 tables, authors from page
23, published version, figures at
http://alice-publications.web.cern.ch/node/5247 ;
publication: Phys.Lett. B796 (2019) 204-219SCOAP3 ccby4.0},
abstract = {The jet radial structure and particle transverse momentum
($p_{\rm T}$) composition within jets are presented in
centrality-selected Pb–Pb collisions at $\sqrt{s_{\rm
NN}}$ = 2.76 TeV. Track-based jets, which are also called
charged jets, were reconstructed with a resolution parameter
of R=0.3 at midrapidity $|\eta_{\rm ch jet}|$ < 0.6 for
transverse momenta $p_{\rm T, ch jet}$ = 30 –120 GeV/c .
Jet–hadron correlations in relative azimuth and
pseudorapidity space ( Δφ,Δη ) are measured to study the
distribution of the associated particles around the jet axis
for different $p_{\rm T, assoc}$-ranges between 1 and 20
GeV/ c . The data in Pb–Pb collisions are compared to
reference distributions for pp collisions, obtained using
embedded PYTHIA simulations. The number of high-$p_{\rm T}$
associate particles (4 < $p_{\rm T, assoc}$ < 20 GeV/c) in
Pb–Pb collisions is found to be suppressed compared to the
reference by 30 to 10\%, depending on centrality. The radial
particle distribution relative to the jet axis shows a
moderate modification in Pb–Pb collisions with respect to
PYTHIA. High-$p_{\rm T}$ associate particles are slightly
more collimated in Pb–Pb collisions compared to the
reference, while low-$p_{\rm T}$ associate particles tend to
be broadened. The results, which are presented for the first
time down to $p_{\rm T, ch jet}$ = 30 GeV/c in Pb–Pb
collisions, are compatible with both previous
jet–hadron-related measurements from the CMS Collaboration
and jet shape measurements from the ALICE Collaboration at
higher $p_{\rm T}$, and add further support for the
established picture of in-medium parton energy loss.},
keywords = {parton: energy loss (INSPIRE) / hadron: correlation
(INSPIRE) / heavy ion: scattering (INSPIRE) / transverse
momentum (INSPIRE) / PYTHIA (INSPIRE) / suppression
(INSPIRE) / collimator (INSPIRE) / resolution (INSPIRE) /
rapidity (INSPIRE) / ALICE (INSPIRE) / experimental results
(INSPIRE) / 2760 GeV-cms/nucleon (INSPIRE)},
cin = {ALI / DTL / CIT},
ddc = {530},
cid = {I:(DE-Ds200)ALI-20080822OR105 /
I:(DE-Ds200)DTL-20051214OR031 /
I:(DE-Ds200)CIT-20110310OR121},
pnm = {612 - Cosmic Matter in the Laboratory (POF3-612) / HGS-HIRe
- HGS-HIRe for FAIR (HGS-HIRe) / SUC-GSI-Heidelberg -
Strategic university cooperation GSI-U Heidelberg
(SUC-GSI-HE) / SUC-GSI-Frankfurt - Strategic university
cooperation GSI-U Frankfurt/M (SUC-GSI-FR) /
SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
Darmstadt (SUC-GSI-DA) / OAGSI - Open Access Publikation mit
Unterstützung des GSI Helmholtzzentrums für
Schwerionenforschung (OAGSI)},
pid = {G:(DE-HGF)POF3-612 / G:(DE-Ds200)HGS-HIRe /
G:(DE-Ds200)SUC-GSI-HE / G:(DE-Ds200)SUC-GSI-FR /
G:(DE-Ds200)SUC-GSI-DA / G:(DE-Ds200)OAGSI},
typ = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
eprint = {1904.13118},
howpublished = {arXiv:1904.13118},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:1904.13118;\%\%$},
UT = {WOS:000483426200028},
doi = {10.1016/j.physletb.2019.07.020},
url = {https://repository.gsi.de/record/225301},
}