Centrality dependence of charged jet production in p-Pb collisions at root(NN)-N-S=5.02 TeV

J. Adam; D. Adamova; M.M. Aggarwal; G.A. Rinella; Maria Agnello; N. Agrawal; Z. Ahammed; Shamim Ahmad; S. U. Ahn; S. Aiola; A. Akindinov; S. Alam; Ian Bearden; Hans Bøggild; Christian Holm Christensen; Kristjan Herlache Gulbrandsen; Jens Jørgen Gaardhøje; Hans Hjersing Dalsgaard; Børge Svane Nielsen; Alexander Colliander Hansen; Ante Bilandzic; Marek Chojnacki; Valentina Zaccolo; You Zhou; Christian Alexander Bourjau

doi:10.1140/epjc/s10052-016-4107-8

Centrality dependence of charged jet production in p-Pb collisions at root(NN)-N-S=5.02 TeV

J. Adam, D. Adamova, M.M. Aggarwal, G.A. Rinella, Maria Agnello, N. Agrawal, Z. Ahammed, Shamim Ahmad, S. U. Ahn, S. Aiola, A. Akindinov, S. Alam, Ian Bearden, Hans Bøggild, Christian Holm Christensen, Kristjan Herlache Gulbrandsen, Jens Jørgen Gaardhøje, Hans Hjersing Dalsgaard, Børge Svane Nielsen, Alexander Colliander HansenAnte Bilandzic, Marek Chojnacki, Valentina Zaccolo, You Zhou, Christian Alexander Bourjau

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Abstract

Measurements of charged jet production as a function of centrality are presented for p–Pb collisions recorded at √sNN = 5.02 TeV with the ALICE detector. Centrality classes are determined via the energy deposit in neutron calorimeters at zero degree, close to the beam direction, to minimise dynamical biases of the selection. The corresponding number of participants or binary nucleon–nucleon collisions is determined based on the particle production in the Pb-going rapidity region. Jets have been reconstructed in the central rapidity region from charged particles with the anti-k_T algorithm for resolution parameters R= 0.2 and R= 0.4 in the transverse momentum range 20 to 120 GeV/c. The reconstructed jet momentum and yields have been corrected for detector effects and underlying-event background. In the five centrality bins considered, the charged jet production in p–Pb collisions is consistent with the production expected from binary scaling from pp collisions. The ratio of jet yields reconstructed with the two different resolution parameters is also independent of the centrality selection, demonstrating the absence of major modifications of the radial jet structure in the reported centrality classes.

Originalsprog	Engelsk
Tidsskrift	European Physical Journal C
Vol/bind	76
Udgave nummer	5
ISSN	1434-6044
DOI	https://doi.org/10.1140/epjc/s10052-016-4107-8
Status	Udgivet - 1 maj 2016

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Adam, J., Adamova, D., Aggarwal, M. M., Rinella, G. A., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, S., U. Ahn, S., Aiola, S., Akindinov, A., Alam, S., Bearden, I., Bøggild, H., Christensen, C. H., Gulbrandsen, K. H., Gaardhøje, J. J., Dalsgaard, H. H., Nielsen, B. S., ... Bourjau, C. A. (2016). Centrality dependence of charged jet production in p-Pb collisions at root(NN)-N-S=5.02 TeV. European Physical Journal C, 76(5). https://doi.org/10.1140/epjc/s10052-016-4107-8

Adam, J, Adamova, D, Aggarwal, MM, Rinella, GA, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, U. Ahn, S, Aiola, S, Akindinov, A, Alam, S, Bearden, I , Bøggild, H , Christensen, CH , Gulbrandsen, KH , Gaardhøje, JJ, Dalsgaard, HH, Nielsen, BS, Hansen, AC, Bilandzic, A, Chojnacki, M, Zaccolo, V, Zhou, Y & Bourjau, CA 2016, 'Centrality dependence of charged jet production in p-Pb collisions at root(NN)-N-S=5.02 TeV', European Physical Journal C, bind 76, nr. 5. https://doi.org/10.1140/epjc/s10052-016-4107-8

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title = "Centrality dependence of charged jet production in p-Pb collisions at root(NN)-N-S=5.02 TeV",

abstract = "Measurements of charged jet production as a function of centrality are presented for p–Pb collisions recorded at √sNN = 5.02 TeV with the ALICE detector. Centrality classes are determined via the energy deposit in neutron calorimeters at zero degree, close to the beam direction, to minimise dynamical biases of the selection. The corresponding number of participants or binary nucleon–nucleon collisions is determined based on the particle production in the Pb-going rapidity region. Jets have been reconstructed in the central rapidity region from charged particles with the anti-kT algorithm for resolution parameters R= 0.2 and R= 0.4 in the transverse momentum range 20 to 120 GeV/c. The reconstructed jet momentum and yields have been corrected for detector effects and underlying-event background. In the five centrality bins considered, the charged jet production in p–Pb collisions is consistent with the production expected from binary scaling from pp collisions. The ratio of jet yields reconstructed with the two different resolution parameters is also independent of the centrality selection, demonstrating the absence of major modifications of the radial jet structure in the reported centrality classes.",

author = "J. Adam and D. Adamova and M.M. Aggarwal and G.A. Rinella and Maria Agnello and N. Agrawal and Z. Ahammed and Shamim Ahmad and {U. Ahn}, S. and S. Aiola and A. Akindinov and S. Alam 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 Dalsgaard, {Hans Hjersing} and Nielsen, {B{\o}rge Svane} and Hansen, {Alexander Colliander} and Ante Bilandzic and Marek Chojnacki and Valentina Zaccolo and You Zhou and Bourjau, {Christian Alexander}",

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T1 - Centrality dependence of charged jet production in p-Pb collisions at root(NN)-N-S=5.02 TeV

AU - Adam, J.

AU - Adamova, D.

AU - Aggarwal, M.M.

AU - Rinella, G.A.

AU - Agnello, Maria

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, Shamim

AU - U. Ahn, S.

AU - Aiola, S.

AU - Akindinov, A.

AU - Alam, S.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Dalsgaard, Hans Hjersing

AU - Nielsen, Børge Svane

AU - Hansen, Alexander Colliander

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

AU - Zhou, You

AU - Bourjau, Christian Alexander

PY - 2016/5/1

Y1 - 2016/5/1

N2 - Measurements of charged jet production as a function of centrality are presented for p–Pb collisions recorded at √sNN = 5.02 TeV with the ALICE detector. Centrality classes are determined via the energy deposit in neutron calorimeters at zero degree, close to the beam direction, to minimise dynamical biases of the selection. The corresponding number of participants or binary nucleon–nucleon collisions is determined based on the particle production in the Pb-going rapidity region. Jets have been reconstructed in the central rapidity region from charged particles with the anti-kT algorithm for resolution parameters R= 0.2 and R= 0.4 in the transverse momentum range 20 to 120 GeV/c. The reconstructed jet momentum and yields have been corrected for detector effects and underlying-event background. In the five centrality bins considered, the charged jet production in p–Pb collisions is consistent with the production expected from binary scaling from pp collisions. The ratio of jet yields reconstructed with the two different resolution parameters is also independent of the centrality selection, demonstrating the absence of major modifications of the radial jet structure in the reported centrality classes.

AB - Measurements of charged jet production as a function of centrality are presented for p–Pb collisions recorded at √sNN = 5.02 TeV with the ALICE detector. Centrality classes are determined via the energy deposit in neutron calorimeters at zero degree, close to the beam direction, to minimise dynamical biases of the selection. The corresponding number of participants or binary nucleon–nucleon collisions is determined based on the particle production in the Pb-going rapidity region. Jets have been reconstructed in the central rapidity region from charged particles with the anti-kT algorithm for resolution parameters R= 0.2 and R= 0.4 in the transverse momentum range 20 to 120 GeV/c. The reconstructed jet momentum and yields have been corrected for detector effects and underlying-event background. In the five centrality bins considered, the charged jet production in p–Pb collisions is consistent with the production expected from binary scaling from pp collisions. The ratio of jet yields reconstructed with the two different resolution parameters is also independent of the centrality selection, demonstrating the absence of major modifications of the radial jet structure in the reported centrality classes.

U2 - 10.1140/epjc/s10052-016-4107-8

DO - 10.1140/epjc/s10052-016-4107-8

M3 - Journal article

C2 - 28280431

SN - 1434-6044

VL - 76

JO - European Physical Journal C

JF - European Physical Journal C

IS - 5

ER -

Centrality dependence of charged jet production in p-Pb collisions at root(NN)-N-S=5.02 TeV

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