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

J Adam; D. Adamova; M.M. Aggarwal; G. Aglieri Rinella; A. Agnello; N. Agrawal; Z. Ahammed; S.U. Ahn; I. Aimo; S. Aiola; Ian Bearden; Hans Bøggild; Christian Holm Christensen; Kristjan Herlache Gulbrandsen; Jens Jørgen Gaardhøje; Børge Svane Nielsen; Alexander Colliander Hansen; Ante Bilandzic; Marek Chojnacki; Valentina Zaccolo

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

J Adam, D. Adamova, M.M. Aggarwal, G. Aglieri Rinella, A. Agnello, N. Agrawal, Z. Ahammed, S.U. Ahn, I. Aimo, S. Aiola, Ian Bearden, Hans Bøggild, Christian Holm Christensen, Kristjan Herlache Gulbrandsen, Jens Jørgen Gaardhøje, Børge Svane Nielsen, Alexander Colliander Hansen, Ante Bilandzic, Marek Chojnacki, Valentina Zaccolo

Experimental Particle Physics

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Abstract

Charged jet production cross sections in p–Pb collisions at s_NN=5.02 TeV measured with the ALICE detector at the LHC are presented. Using the anti-k_T 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, R_pPb, 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≤p_T,chjet≤120 GeV/c, R_pPb 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 s_NN=5.02 TeV.

Original language	English
Journal	Physics Letters B
Volume	749
Pages (from-to)	68-81
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2015.07.054
Publication status	Published - 7 Oct 2015

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Adam, J., Adamova, D., Aggarwal, M. M., Aglieri Rinella, G., Agnello, A., Agrawal, N., Ahammed, Z., Ahn, S. U., Aimo, I., Aiola, S., Bearden, I., Bøggild, H., Christensen, C. H., Gulbrandsen, K. H., Gaardhøje, J. J., Nielsen, B. S., Hansen, A. C., Bilandzic, A., Chojnacki, M., & Zaccolo, V. (2015). Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at root s(NN)=5.02 TeV. Physics Letters B, 749, 68-81. https://doi.org/10.1016/j.physletb.2015.07.054

Adam, J, Adamova, D, Aggarwal, MM, Aglieri Rinella, G, Agnello, A, Agrawal, N, Ahammed, Z, Ahn, SU, Aimo, I, Aiola, S, Bearden, I , Bøggild, H , Christensen, CH , Gulbrandsen, KH , Gaardhøje, JJ , Nielsen, BS, Hansen, AC, Bilandzic, A, Chojnacki, M & Zaccolo, V 2015, 'Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at root s(NN)=5.02 TeV', Physics Letters B, vol. 749, pp. 68-81. https://doi.org/10.1016/j.physletb.2015.07.054

@article{6b4f766c78a2478d8dcef3293e682fc9,

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,chjet≤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 = "J Adam and D. Adamova and M.M. Aggarwal and {Aglieri Rinella}, G. and A. Agnello and N. Agrawal and Z. Ahammed and S.U. Ahn and I. Aimo and S. Aiola and Ian Bearden and Hans B{\o}ggild and Christensen, {Christian Holm} and Gulbrandsen, {Kristjan Herlache} and Gaardh{\o}je, {Jens J{\o}rgen} and Nielsen, {B{\o}rge Svane} and Hansen, {Alexander Colliander} and Ante Bilandzic and Marek Chojnacki and Valentina Zaccolo",

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: Particle Physics, Nuclear Physics and Cosmology",

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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 - Adam, J

AU - Adamova, D.

AU - Aggarwal, M.M.

AU - Aglieri Rinella, G.

AU - Agnello, A.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S.U.

AU - Aimo, I.

AU - Aiola, S.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Nielsen, Børge Svane

AU - Hansen, Alexander Colliander

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

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,chjet≤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,chjet≤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 - Journal article

SN - 0370-2693

VL - 749

SP - 68

EP - 81

JO - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

JF - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

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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