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Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment

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Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment. / Collaboration, ATLAS; Barton, A.E.; Bertram, I.A. et al.
In: Physics Letters B, Vol. 802, 135262, 31.01.2020.

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Collaboration ATLAS, Barton AE, Bertram IA, Borissov G, Bouhova-Thacker EV, Fox H et al. Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment. Physics Letters B. 2020 Jan 31;802:135262. doi: 10.1016/j.physletb.2020.135262

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Bibtex

@article{a5a18027a70f4005a88cab44d78cc605,
title = "Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment",
abstract = "The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at √sNN=5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of 0.49 nb-1 are used for the analysis. The Z boson yield, normalised by the total number of minimum-bias events and the mean nuclear thickness function, is measured as a function of dilepton rapidity and event centrality. The measurements in Pb+Pb collisions are compared with similar measurements made in proton–proton collisions at the same centre-of-mass energy. The nuclear modification factor is found to be consistent with unity for all centrality intervals. The results are compared with theoretical predictions obtained at next-to-leading order using nucleon and nuclear parton distribution functions. The normalised Z boson yields in Pb+Pb collisions lie 1–3σ above the predictions. The nuclear modification factor measured as a function of rapidity agrees with unity and is consistent with a next-to-leading-order QCD calculation including the isospin effect.",
author = "ATLAS Collaboration and A.E. Barton and I.A. Bertram and G. Borissov and E.V. Bouhova-Thacker and H. Fox and R.C.W. Henderson and R.W.L. Jones and V. Kartvelishvili and R.E. Long and P.A. Love and D. Muenstermann and A.J. Parker and M. Smizanska and A.S. Tee and J. Walder and A.M. Wharton and B.W. Whitmore and Izaac Sanderswood and Melissa Yexley",
year = "2020",
month = jan,
day = "31",
doi = "10.1016/j.physletb.2020.135262",
language = "English",
volume = "802",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",

}

RIS

TY - JOUR

T1 - Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment

AU - Collaboration, ATLAS

AU - Barton, A.E.

AU - Bertram, I.A.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Fox, H.

AU - Henderson, R.C.W.

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Long, R.E.

AU - Love, P.A.

AU - Muenstermann, D.

AU - Parker, A.J.

AU - Smizanska, M.

AU - Tee, A.S.

AU - Walder, J.

AU - Wharton, A.M.

AU - Whitmore, B.W.

AU - Sanderswood, Izaac

AU - Yexley, Melissa

PY - 2020/1/31

Y1 - 2020/1/31

N2 - The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at √sNN=5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of 0.49 nb-1 are used for the analysis. The Z boson yield, normalised by the total number of minimum-bias events and the mean nuclear thickness function, is measured as a function of dilepton rapidity and event centrality. The measurements in Pb+Pb collisions are compared with similar measurements made in proton–proton collisions at the same centre-of-mass energy. The nuclear modification factor is found to be consistent with unity for all centrality intervals. The results are compared with theoretical predictions obtained at next-to-leading order using nucleon and nuclear parton distribution functions. The normalised Z boson yields in Pb+Pb collisions lie 1–3σ above the predictions. The nuclear modification factor measured as a function of rapidity agrees with unity and is consistent with a next-to-leading-order QCD calculation including the isospin effect.

AB - The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at √sNN=5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of 0.49 nb-1 are used for the analysis. The Z boson yield, normalised by the total number of minimum-bias events and the mean nuclear thickness function, is measured as a function of dilepton rapidity and event centrality. The measurements in Pb+Pb collisions are compared with similar measurements made in proton–proton collisions at the same centre-of-mass energy. The nuclear modification factor is found to be consistent with unity for all centrality intervals. The results are compared with theoretical predictions obtained at next-to-leading order using nucleon and nuclear parton distribution functions. The normalised Z boson yields in Pb+Pb collisions lie 1–3σ above the predictions. The nuclear modification factor measured as a function of rapidity agrees with unity and is consistent with a next-to-leading-order QCD calculation including the isospin effect.

U2 - 10.1016/j.physletb.2020.135262

DO - 10.1016/j.physletb.2020.135262

M3 - Journal article

VL - 802

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

M1 - 135262

ER -