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Article: Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment
Title | Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment |
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Authors | |
Keywords | Top Quark Partons Higgs Bosons |
Issue Date | 2020 |
Publisher | Elsevier: SCOAP3. The Journal's web site is located at http://www.elsevier.com/locate/physletb |
Citation | Physics Letters B, 2020, v. 802, p. 135262:1-135262:23 How to Cite? |
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. © 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license. |
Persistent Identifier | http://hdl.handle.net/10722/286259 |
ISSN | 2023 Impact Factor: 4.3 2023 SCImago Journal Rankings: 1.593 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Orlando, N | - |
dc.contributor.author | Paredes Hernandez, D | - |
dc.contributor.author | Salvucci, A | - |
dc.contributor.author | Tu, Y | - |
dc.contributor.author | The ATLAS Collaboration | - |
dc.contributor.author | Pizzimento, L | - |
dc.date.accessioned | 2020-08-31T07:01:25Z | - |
dc.date.available | 2020-08-31T07:01:25Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Physics Letters B, 2020, v. 802, p. 135262:1-135262:23 | - |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.uri | http://hdl.handle.net/10722/286259 | - |
dc.description.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. © 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license. | - |
dc.language | eng | - |
dc.publisher | Elsevier: SCOAP3. The Journal's web site is located at http://www.elsevier.com/locate/physletb | - |
dc.relation.ispartof | Physics Letters B | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Top Quark | - |
dc.subject | Partons | - |
dc.subject | Higgs Bosons | - |
dc.title | Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment | - |
dc.type | Article | - |
dc.identifier.email | Paredes Hernandez, D: dparedes@hku.hk | - |
dc.identifier.email | Tu, Y: yanjuntu@hku.hk | - |
dc.identifier.authority | Tu, Y=rp01971 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1016/j.physletb.2020.135262 | - |
dc.identifier.scopus | eid_2-s2.0-85079047734 | - |
dc.identifier.hkuros | 313086 | - |
dc.identifier.volume | 802 | - |
dc.identifier.spage | 135262:1 | - |
dc.identifier.epage | 135262:23 | - |
dc.identifier.isi | WOS:000515091400074 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0370-2693 | - |