Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/10400.26/27671 |
Resumo: | This Letter presents a measurement of γγ→μ+μ- production in Pb+Pb collisions recorded by the ATLAS detector at the Large Hadron Collider at sNN=5.02 TeV with an integrated luminosity of 0.49 nb-1. The azimuthal angle and transverse momentum correlations between the muons are measured as a function of collision centrality. The muon pairs are produced from γγ through the interaction of the large electromagnetic fields of the nuclei. The contribution from background sources of muon pairs is removed using a template fit method. In peripheral collisions, the muons exhibit a strong back-to-back correlation consistent with previous measurements of muon pair production in ultraperipheral collisions. The angular correlations are observed to broaden significantly in central collisions. The modifications are qualitatively consistent with rescattering of the muons while passing through the hot matter produced in the collision. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detectorThis Letter presents a measurement of γγ→μ+μ- production in Pb+Pb collisions recorded by the ATLAS detector at the Large Hadron Collider at sNN=5.02 TeV with an integrated luminosity of 0.49 nb-1. The azimuthal angle and transverse momentum correlations between the muons are measured as a function of collision centrality. The muon pairs are produced from γγ through the interaction of the large electromagnetic fields of the nuclei. The contribution from background sources of muon pairs is removed using a template fit method. In peripheral collisions, the muons exhibit a strong back-to-back correlation consistent with previous measurements of muon pair production in ultraperipheral collisions. The angular correlations are observed to broaden significantly in central collisions. The modifications are qualitatively consistent with rescattering of the muons while passing through the hot matter produced in the collision.Repositório ComumATLAS collaboration (2913 authors)Aguilar Saavedra, Juan AntonioAmor Dos Santos, Susana PatriciaAraque Espinosa, Juan PedroCastro, Nuno FilipeConde Muino, PatriciaDa Cunha Sargedas De Sousa, Mario JoseDias do vale, TiagoFaisca Rodrigues Pereira, Rui MiguelFiolhais, MiguelGalhardo, BrunoGomes, AgostinhoGoncalo, RicardoJorge, PedroMachado Miguens, JoanaMaio, AmeliaManeira, JoseMendes Gouveia, Emanuel DemetrioOleiro Seabra, Luis FilipeOnofre, AntonioCosta Batalha Pedro, RutePereira Peixoto, Ana PaulaSantos, HelenaSaraiva, JoaoSilva, Jose ManuelTavares Delgado, AdemarVeloso, FilipeWolters, Helmut2019-02-05T16:36:21Z2018-11-202019-02-05T16:36:21Z2018-11-20T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.26/27671enghttp://dx.doi.org/10.1103/PhysRevLett.121.212301info: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:RCAAP2024-05-16T07:39:29Zoai:comum.rcaap.pt:10400.26/27671Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-16T07:39:29Repositório 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 centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector |
title |
Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector |
spellingShingle |
Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector ATLAS collaboration (2913 authors) |
title_short |
Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector |
title_full |
Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector |
title_fullStr |
Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector |
title_full_unstemmed |
Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector |
title_sort |
Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector |
author |
ATLAS collaboration (2913 authors) |
author_facet |
ATLAS collaboration (2913 authors) Aguilar Saavedra, Juan Antonio Amor Dos Santos, Susana Patricia Araque Espinosa, Juan Pedro Castro, Nuno Filipe Conde Muino, Patricia Da Cunha Sargedas De Sousa, Mario Jose Dias do vale, Tiago Faisca Rodrigues Pereira, Rui Miguel Fiolhais, Miguel Galhardo, Bruno Gomes, Agostinho Goncalo, Ricardo Jorge, Pedro Machado Miguens, Joana Maio, Amelia Maneira, Jose Mendes Gouveia, Emanuel Demetrio Oleiro Seabra, Luis Filipe Onofre, Antonio Costa Batalha Pedro, Rute Pereira Peixoto, Ana Paula Santos, Helena Saraiva, Joao Silva, Jose Manuel Tavares Delgado, Ademar Veloso, Filipe Wolters, Helmut |
author_role |
author |
author2 |
Aguilar Saavedra, Juan Antonio Amor Dos Santos, Susana Patricia Araque Espinosa, Juan Pedro Castro, Nuno Filipe Conde Muino, Patricia Da Cunha Sargedas De Sousa, Mario Jose Dias do vale, Tiago Faisca Rodrigues Pereira, Rui Miguel Fiolhais, Miguel Galhardo, Bruno Gomes, Agostinho Goncalo, Ricardo Jorge, Pedro Machado Miguens, Joana Maio, Amelia Maneira, Jose Mendes Gouveia, Emanuel Demetrio Oleiro Seabra, Luis Filipe Onofre, Antonio Costa Batalha Pedro, Rute Pereira Peixoto, Ana Paula Santos, Helena Saraiva, Joao Silva, Jose Manuel Tavares Delgado, Ademar Veloso, Filipe Wolters, Helmut |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório Comum |
dc.contributor.author.fl_str_mv |
ATLAS collaboration (2913 authors) Aguilar Saavedra, Juan Antonio Amor Dos Santos, Susana Patricia Araque Espinosa, Juan Pedro Castro, Nuno Filipe Conde Muino, Patricia Da Cunha Sargedas De Sousa, Mario Jose Dias do vale, Tiago Faisca Rodrigues Pereira, Rui Miguel Fiolhais, Miguel Galhardo, Bruno Gomes, Agostinho Goncalo, Ricardo Jorge, Pedro Machado Miguens, Joana Maio, Amelia Maneira, Jose Mendes Gouveia, Emanuel Demetrio Oleiro Seabra, Luis Filipe Onofre, Antonio Costa Batalha Pedro, Rute Pereira Peixoto, Ana Paula Santos, Helena Saraiva, Joao Silva, Jose Manuel Tavares Delgado, Ademar Veloso, Filipe Wolters, Helmut |
description |
This Letter presents a measurement of γγ→μ+μ- production in Pb+Pb collisions recorded by the ATLAS detector at the Large Hadron Collider at sNN=5.02 TeV with an integrated luminosity of 0.49 nb-1. The azimuthal angle and transverse momentum correlations between the muons are measured as a function of collision centrality. The muon pairs are produced from γγ through the interaction of the large electromagnetic fields of the nuclei. The contribution from background sources of muon pairs is removed using a template fit method. In peripheral collisions, the muons exhibit a strong back-to-back correlation consistent with previous measurements of muon pair production in ultraperipheral collisions. The angular correlations are observed to broaden significantly in central collisions. The modifications are qualitatively consistent with rescattering of the muons while passing through the hot matter produced in the collision. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-20 2018-11-20T00:00:00Z 2019-02-05T16:36:21Z 2019-02-05T16:36:21Z |
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/10400.26/27671 |
url |
http://hdl.handle.net/10400.26/27671 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://dx.doi.org/10.1103/PhysRevLett.121.212301 |
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.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 |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
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1817545427820478464 |