Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at root s(NN)=5.02 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2015.07.054

Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at root s(NN)=5.02 TeV

ALICE Collaboration

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Charged jet production cross sections in p–Pb collisions at √sNN = 5.02 TeV measured with the ALICE
detector at the LHC are presented. Using the anti-kT algorithm, jets have been reconstructed in the central
rapidity region from charged particles with resolution parameters R = 0.2 and R = 0.4. The reconstructed
jets have been corrected for detector effects and the underlying event background. To calculate the
nuclear modification factor, RpPb, of charged jets in p–Pb collisions, a pp reference was constructed
by scaling previously measured charged jet spectra at √s = 7 TeV. In the transverse momentum range
20 ≤ pT, ch jet ≤ 120 GeV/c, RpPb is found to be consistent with unity, indicating the absence of strong
nuclear matter effects on jet production. Major modifications to the radial jet structure are probed via
the ratio of jet production cross sections reconstructed with the two different resolution parameters. This
ratio is found to be similar to the measurement in pp collisions at √s = 7 TeV and to the expectations
from PYTHIA pp simulations and NLO pQCD calculations at √sNN = 5.02 TeV

Original language	English
Pages (from-to)	68-81
Number of pages	14
Journal	Physics Letters B
Volume	749
DOIs	https://doi.org/10.1016/j.physletb.2015.07.054
Publication status	Published - 7 Oct 2015

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@article{55a42c2e62244eddb57795e4d9db24aa,

title = "Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at root s(NN)=5.02 TeV",

abstract = "Charged jet production cross sections in p–Pb collisions at √sNN = 5.02 TeV measured with the ALICE detector at the LHC are presented. Using the anti-kT algorithm, jets have been reconstructed in the central rapidity region from charged particles with resolution parameters R = 0.2 and R = 0.4. The reconstructed jets have been corrected for detector effects and the underlying event background. To calculate the nuclear modification factor, RpPb, of charged jets in p–Pb collisions, a pp reference was constructed by scaling previously measured charged jet spectra at √s = 7 TeV. In the transverse momentum range 20 ≤ pT, ch jet ≤ 120 GeV/c, RpPb is found to be consistent with unity, indicating the absence of strong nuclear matter effects on jet production. Major modifications to the radial jet structure are probed via the ratio of jet production cross sections reconstructed with the two different resolution parameters. This ratio is found to be similar to the measurement in pp collisions at √s = 7 TeV and to the expectations from PYTHIA pp simulations and NLO pQCD calculations at √sNN = 5.02 TeV",

author = "\{ALICE Collaboration\} and J. Adam and D. Adamova and Aggarwal, \{M. M.\} and Rinella, \{G. Aglieri\} and M. Agnello and N. Agrawal and Z. Ahammed and Ahn, \{S. U.\} and I. Aimo and S. Aiola and M. Ajaz and A. Akindinov and Alam, \{S. N.\} and C. Bedda and Bertens, \{R. A.\} and C. Bianchin and S. Bjelogrlic and M. Botje and A. Caliva and M. Chojnacki and P. Christakoglou and T. Chujo and A. Dobrin and A. Dubla and L. Fabbietti and A. Grelli and Keijdener, \{D. L. D.\} and M. Krzewicki and Kuijer, \{P. G.\} and \{La Pointe\}, \{S. L.\} and E. Leogrande and Lodato, \{D. F.\} and G. Luparello and J. Margutti and A. Mischke and N. Mohammadi and S. Muhuri and G. Nooren and \{Oliveira Da Silva\}, \{A. C.\} and T. Peitzmann and N. Poljak and S. Rajput and M. Reicher and T. Richert and E. Rocco and \{Rodriguez Manso\}, A. and Snellings, \{R. J. M.\} and D. Thomas and \{Van Der Maarel\}, J. and Veen, \{A. M.\}",

year = "2015",

month = oct,

day = "7",

doi = "10.1016/j.physletb.2015.07.054",

language = "English",

volume = "749",

pages = "68--81",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at root s(NN)=5.02 TeV

AU - ALICE Collaboration

AU - Adam, J.

AU - Adamova, D.

AU - Aggarwal, M. M.

AU - Rinella, G. Aglieri

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S. U.

AU - Aimo, I.

AU - Aiola, S.

AU - Ajaz, M.

AU - Akindinov, A.

AU - Alam, S. N.

AU - Bedda, C.

AU - Bertens, R. A.

AU - Bianchin, C.

AU - Bjelogrlic, S.

AU - Botje, M.

AU - Caliva, A.

AU - Chojnacki, M.

AU - Christakoglou, P.

AU - Chujo, T.

AU - Dobrin, A.

AU - Dubla, A.

AU - Fabbietti, L.

AU - Grelli, A.

AU - Keijdener, D. L. D.

AU - Krzewicki, M.

AU - Kuijer, P. G.

AU - La Pointe, S. L.

AU - Leogrande, E.

AU - Lodato, D. F.

AU - Luparello, G.

AU - Margutti, J.

AU - Mischke, A.

AU - Mohammadi, N.

AU - Muhuri, S.

AU - Nooren, G.

AU - Oliveira Da Silva, A. C.

AU - Peitzmann, T.

AU - Poljak, N.

AU - Rajput, S.

AU - Reicher, M.

AU - Richert, T.

AU - Rocco, E.

AU - Rodriguez Manso, A.

AU - Snellings, R. J. M.

AU - Thomas, D.

AU - Van Der Maarel, J.

AU - Veen, A. M.

PY - 2015/10/7

Y1 - 2015/10/7

N2 - Charged jet production cross sections in p–Pb collisions at √sNN = 5.02 TeV measured with the ALICE detector at the LHC are presented. Using the anti-kT algorithm, jets have been reconstructed in the central rapidity region from charged particles with resolution parameters R = 0.2 and R = 0.4. The reconstructed jets have been corrected for detector effects and the underlying event background. To calculate the nuclear modification factor, RpPb, of charged jets in p–Pb collisions, a pp reference was constructed by scaling previously measured charged jet spectra at √s = 7 TeV. In the transverse momentum range 20 ≤ pT, ch jet ≤ 120 GeV/c, RpPb is found to be consistent with unity, indicating the absence of strong nuclear matter effects on jet production. Major modifications to the radial jet structure are probed via the ratio of jet production cross sections reconstructed with the two different resolution parameters. This ratio is found to be similar to the measurement in pp collisions at √s = 7 TeV and to the expectations from PYTHIA pp simulations and NLO pQCD calculations at √sNN = 5.02 TeV

AB - Charged jet production cross sections in p–Pb collisions at √sNN = 5.02 TeV measured with the ALICE detector at the LHC are presented. Using the anti-kT algorithm, jets have been reconstructed in the central rapidity region from charged particles with resolution parameters R = 0.2 and R = 0.4. The reconstructed jets have been corrected for detector effects and the underlying event background. To calculate the nuclear modification factor, RpPb, of charged jets in p–Pb collisions, a pp reference was constructed by scaling previously measured charged jet spectra at √s = 7 TeV. In the transverse momentum range 20 ≤ pT, ch jet ≤ 120 GeV/c, RpPb is found to be consistent with unity, indicating the absence of strong nuclear matter effects on jet production. Major modifications to the radial jet structure are probed via the ratio of jet production cross sections reconstructed with the two different resolution parameters. This ratio is found to be similar to the measurement in pp collisions at √s = 7 TeV and to the expectations from PYTHIA pp simulations and NLO pQCD calculations at √sNN = 5.02 TeV

U2 - 10.1016/j.physletb.2015.07.054

DO - 10.1016/j.physletb.2015.07.054

M3 - Article

SN - 0370-2693

VL - 749

SP - 68

EP - 81

JO - Physics Letters B

JF - Physics Letters B

ER -

Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at root s(NN)=5.02 TeV

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