Measurement of transverse momentum relative to dijet systems in PbPb and pp collisions at $ \sqrt{s_{\mathrm{NN}}}=2.76 $ TeV - INSPIRE

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Measurement of transverse momentum relative to dijet systems in PbPb and pp collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV

CMS

Collaboration

Sep 30, 2015

48 pages

Published in:

JHEP 01 (2016) 006

Published: Jan 4, 2016

e-Print:

1509.09029 [nucl-ex]

DOI:

10.1007/JHEP01(2016)006

Report number:

CMS-HIN-14-010,
CERN-PH-EP-2015-260

Experiments:

CERN-LHC-CMS

View in:

reference search128 citations

Citations per year

Abstract: (Springer)

An analysis of dijet events in PbPb and pp collisions is performed to explore the properties of energy loss by partons traveling in a quark-gluon plasma. Data are collected at a nucleon-nucleon center-of-mass energy of 2.76 TeV at the LHC. The distribution of transverse momentum (p

_{T}

) surrounding dijet systems is measured by selecting charged particles in different ranges of p

_{T}

and at different angular cones of pseudorapidity and azimuth. The measurement is performed as a function of centrality of the PbPb collisions, the p

_{T}

asymmetry of the jets in the dijet pair, and the distance parameter R used in the anti-k

_{T}

jet clustering algorithm. In events with unbalanced dijets, PbPb collisions show an enhanced multiplicity in the hemisphere of the subleading jet, with the p

_{T}

imbalance compensated by an excess of low-p

_{T}

particles at large angles from the jet axes.

Note:

Replaced with published version. Added journal reference and DOI

Heavy Ions
Quark gluon plasma
Heavy-ion collision
transverse momentum
dijet
jet: asymmetry
quark gluon
plasma
parton: energy loss
charged particle

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