Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/32027 |
Resumo: | Two-particle correlations in relative azimuthal angle ( ) and pseudorapidity ( ) are measured in ffiffiffiffiffiffiffiffi sNN p ¼ 5:02 TeV p þ Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1 b 1 of data as a function of transverse momentum (pT) and the transverse energy (EPb T ) summed over 3:1 << 4:9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2 < j j < 5) ‘‘near-side’’ ( 0) correlation that grows rapidly with increasing EPb T . A long-range ‘‘away-side’’ ( ) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small EPb T , is found to match the near-side correlation in magnitude, shape (in and ) and EPb T dependence. The resultant correlation is approximately symmetric about =2, and is consistent with a dominant cos2 modulation for all EPb T ranges and particle pT. |
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Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS DetectorCiências Naturais::Ciências FísicasScience & TechnologyTwo-particle correlations in relative azimuthal angle ( ) and pseudorapidity ( ) are measured in ffiffiffiffiffiffiffiffi sNN p ¼ 5:02 TeV p þ Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1 b 1 of data as a function of transverse momentum (pT) and the transverse energy (EPb T ) summed over 3:1 << 4:9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2 < j j < 5) ‘‘near-side’’ ( 0) correlation that grows rapidly with increasing EPb T . A long-range ‘‘away-side’’ ( ) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small EPb T , is found to match the near-side correlation in magnitude, shape (in and ) and EPb T dependence. The resultant correlation is approximately symmetric about =2, and is consistent with a dominant cos2 modulation for all EPb T ranges and particle pT.We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC, and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST, and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR, and VSC CR, Czech Republic; DNRF, DNSRC, and Lundbeck Foundation, Denmark; EPLANET and ERC, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNAS, Georgia; BMBF, DFG, HGF, MPG, and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP, and Benoziyo Center, Israel; INFN, Italy; MEXTand JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF, and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society, and Leverhulme Trust, United Kingdom; and the DOE and NSF, United States of America. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular, from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK), and BNL (USA), and in the Tier-2 facilities worldwide.American Physical SocietyUniversidade do MinhoOnofre, A.Castro, Nuno Filipe Silva FernandesATLAS Collaboration20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/32027engAad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., Abdelalim, A. A., . . . Collaboration, A. (2013). Observation of Associated Near-Side and Away-Side Long-Range Correlations in root S-NN=5.02 TeV Proton-Lead Collisions with the ATLAS Detector. [Article]. Physical Review Letters, 110(18). doi: 10.1103/PhysRevLett.110.1823020031-90071079-711410.1103/PhysRevLett.110.182302http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.182302info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:47:17Zoai:repositorium.sdum.uminho.pt:1822/32027Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:45:23.396730Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector |
title |
Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector |
spellingShingle |
Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector Onofre, A. Ciências Naturais::Ciências Físicas Science & Technology |
title_short |
Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector |
title_full |
Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector |
title_fullStr |
Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector |
title_full_unstemmed |
Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector |
title_sort |
Observation of associated near-side and away-side long-range correlations in root S-NN=5.02 TeV Proton-Lead collisions with the ATLAS Detector |
author |
Onofre, A. |
author_facet |
Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
author_role |
author |
author2 |
Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
dc.subject.por.fl_str_mv |
Ciências Naturais::Ciências Físicas Science & Technology |
topic |
Ciências Naturais::Ciências Físicas Science & Technology |
description |
Two-particle correlations in relative azimuthal angle ( ) and pseudorapidity ( ) are measured in ffiffiffiffiffiffiffiffi sNN p ¼ 5:02 TeV p þ Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1 b 1 of data as a function of transverse momentum (pT) and the transverse energy (EPb T ) summed over 3:1 << 4:9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2 < j j < 5) ‘‘near-side’’ ( 0) correlation that grows rapidly with increasing EPb T . A long-range ‘‘away-side’’ ( ) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small EPb T , is found to match the near-side correlation in magnitude, shape (in and ) and EPb T dependence. The resultant correlation is approximately symmetric about =2, and is consistent with a dominant cos2 modulation for all EPb T ranges and particle pT. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013 2013-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/32027 |
url |
http://hdl.handle.net/1822/32027 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., Abdelalim, A. A., . . . Collaboration, A. (2013). Observation of Associated Near-Side and Away-Side Long-Range Correlations in root S-NN=5.02 TeV Proton-Lead Collisions with the ATLAS Detector. [Article]. Physical Review Letters, 110(18). doi: 10.1103/PhysRevLett.110.182302 0031-9007 1079-7114 10.1103/PhysRevLett.110.182302 http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.182302 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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