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Title: Measurement of dijet k T in p–Pb collisions at s NN = 5.02 TeV

Abstract

A measurement of dijet correlations in p–Pb collisions at √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 corrections 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+nesin(Δ φdijet) with Δ φdijet 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 modification in p–Pb collisions with respect to pp collisions. Here, 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 tomore » the event multiplicity or a PYTHIA8 reference is observed.« less

Authors:
 [1]
  1. Czech Technical Univ. in Prague, Prague (Czech Republic). et al.
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Alice Collaboration
OSTI Identifier:
1213882
Alternate Identifier(s):
OSTI ID: 1338514
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Volume: 746; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Adam, J. Measurement of dijet kT in p–Pb collisions at sNN=5.02 TeV. United States: N. p., 2015. Web. doi:10.1016/j.physletb.2015.05.033.
Adam, J. Measurement of dijet kT in p–Pb collisions at sNN=5.02 TeV. United States. doi:10.1016/j.physletb.2015.05.033.
Adam, J. Tue . "Measurement of dijet kT in p–Pb collisions at sNN=5.02 TeV". United States. doi:10.1016/j.physletb.2015.05.033.
@article{osti_1213882,
title = {Measurement of dijet kT in p–Pb collisions at sNN=5.02 TeV},
author = {Adam, J.},
abstractNote = {A measurement of dijet correlations in p–Pb collisions at √sNN = 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 corrections for underlying event fluctuations and finite detector resolution are applied on an inclusive basis. A projection of the dijet transverse momentum, kTy = pT,jetch+nesin(Δφdijet) with Δφdijet the azimuthal angle between a full and charged jet and pT,jetch+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 modification in p–Pb collisions with respect to pp collisions. Here, measurements of the dijet kTy as a function of the transverse momentum of the full and recoil charged jet, and the event multiplicity are presented. No significant modification of kTy due to nuclear matter effects in p–Pb collisions with respect to the event multiplicity or a PYTHIA8 reference is observed.},
doi = {10.1016/j.physletb.2015.05.033},
journal = {Physics Letters B},
issn = {0370-2693},
number = C,
volume = 746,
place = {United States},
year = {2015},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.physletb.2015.05.033

Citation Metrics:
Cited by: 10 works
Citation information provided by
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Figures / Tables:

Fig. 1 Fig. 1: Dijet |kTy| distributions in p–Pb collisions in the 0–40% V0A multiplicity event class for several kinematic intervals of the full jet ($p^{ch+ne}_{T,jet}$). The measurement is compared to PYTHIA8 (tune 4C, $K$ = 0.7) with and without initial state radiation. The lower panels show the ratio between the measurementmore » and PYTHIA8 including initial state radiation.« less

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Works referencing / citing this record:

Measurement of inclusive jet production and nuclear modifications in pPb collisions at $$\sqrt{s_{_\mathrm {NN}}} =5.02\,\mathrm{TeV} $$ s NN = 5.02 TeV
journal, July 2016


    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.