Measurement of dijet k(T) in p-Pb collisions at root s(NN)=5.02 TeV
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M. B. and Zinovjev, G. and Zyzak, M. and ALICE Collaboration... Show more Show less
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Abstract
A measurement of dijet correlations in p-Pb collisions at root s(NN) =
5.02 TeV with the ALICE detector is presented. Jets are reconstructed
from charged particles measured in the central tracking detectors and
neutral energy deposited in the electromagnetic calorimeter. The
transverse momentum of the full jet (clustered from charged and neutral
constituents) and charged jet (clustered from charged particles only) is
corrected event-by-event for the contribution of the underlying event,
while coorrections for underlying event fluctuations and finite detector
resolution are applied on an inclusive basis. A projection of the dijet
transverse momentum, k(Ty) = p(T,jet)(ch+ne) sin(Delta phi(dijet)) with
Delta phi(dijet) the azimuthal angle between a full and charged jet and
p(T,jet)(ch+ne) the transverse momentum of the full jet, is used to
study nuclear matter effects in p-Pb collisions. This observable is
sensitive to the acoplanarity of dijet production and its potential
modificationin p-Pb collisions with respect to pp collisions.
Measurements of the dijet k(Ty) as a function of the transverse momentum
of the full and recoil charged jet, and the event multiplicity are
presented. No significant modification of k(Ty) due to nuclear matter
effects in p-Pb collisions with respect to the event multiplicity or a
PYTHIA8 reference is observed. (C) 2015 CERN for the benefit of the
ALICE Collaboration. Published by Elsevier B.V.... Show more Show less