Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/194919 |
Resumo: | The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at √sNN=5.02TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-ppratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) >RAA(ϒ(2S)) >RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN=2.76TeV, although the two are compatible within uncertainties. The upper limit on the RAAof ϒ(3S)integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date. |
id |
UFRGS-2_829eed22f975c2b10636870994cc2199 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/194919 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Sirunyan, A. M.Silveira, Gustavo Gil daCMS Collaboration2019-06-01T02:39:46Z20190370-2693http://hdl.handle.net/10183/194919001091084The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at √sNN=5.02TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-ppratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) >RAA(ϒ(2S)) >RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN=2.76TeV, although the two are compatible within uncertainties. The upper limit on the RAAof ϒ(3S)integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date.application/pdfengPhysics letters. B. Amsterdam. Vol. 790 (Mar. 2019), p. 270-293Aceleradores de partículasColisao de ions pesadosMeasurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeVEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001091084.pdf.txt001091084.pdf.txtExtracted Texttext/plain94795http://www.lume.ufrgs.br/bitstream/10183/194919/2/001091084.pdf.txt2d26f70eecbd0ef43a8c5963ee2c7583MD52ORIGINAL001091084.pdfTexto completo (inglês)application/pdf1056475http://www.lume.ufrgs.br/bitstream/10183/194919/1/001091084.pdfa099ec6df1ce00a340477564ec6f15b4MD5110183/1949192023-08-03 03:32:37.788739oai:www.lume.ufrgs.br:10183/194919Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-03T06:32:37Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV |
title |
Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV |
spellingShingle |
Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV Sirunyan, A. M. Aceleradores de partículas Colisao de ions pesados |
title_short |
Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV |
title_full |
Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV |
title_fullStr |
Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV |
title_full_unstemmed |
Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV |
title_sort |
Measurement of nuclear modification factors of ϒ(1S), ϒ(2S), and ϒ(3S) mesons in PbPb collisions at √sNN = 5.02 TeV |
author |
Sirunyan, A. M. |
author_facet |
Sirunyan, A. M. Silveira, Gustavo Gil da CMS Collaboration |
author_role |
author |
author2 |
Silveira, Gustavo Gil da CMS Collaboration |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Sirunyan, A. M. Silveira, Gustavo Gil da CMS Collaboration |
dc.subject.por.fl_str_mv |
Aceleradores de partículas Colisao de ions pesados |
topic |
Aceleradores de partículas Colisao de ions pesados |
description |
The cross sections for ϒ(1S), ϒ(2S), and ϒ(3S) production in lead–lead (PbPb) and proton–proton (pp) collisions at √sNN=5.02TeV have been measured using the CMS detector at the LHC. The nuclear modification factors, RAA, derived from the PbPb-to-ppratio of yields for each state, are studied as functions of meson rapidity and transverse momentum, as well as PbPb collision centrality. The yields of all three states are found to be significantly suppressed, and compatible with a sequential ordering of the suppression, RAA(ϒ(1S)) >RAA(ϒ(2S)) >RAA(ϒ(3S)). The suppression of ϒ(1S) is larger than that seen at √sNN=2.76TeV, although the two are compatible within uncertainties. The upper limit on the RAAof ϒ(3S)integrated over pT, rapidity and centrality is 0.096 at 95% confidence level, which is the strongest suppression observed for a quarkonium state in heavy ion collisions to date. |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-06-01T02:39:46Z |
dc.date.issued.fl_str_mv |
2019 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/194919 |
dc.identifier.issn.pt_BR.fl_str_mv |
0370-2693 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001091084 |
identifier_str_mv |
0370-2693 001091084 |
url |
http://hdl.handle.net/10183/194919 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physics letters. B. Amsterdam. Vol. 790 (Mar. 2019), p. 270-293 |
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 Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/194919/2/001091084.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/194919/1/001091084.pdf |
bitstream.checksum.fl_str_mv |
2d26f70eecbd0ef43a8c5963ee2c7583 a099ec6df1ce00a340477564ec6f15b4 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224967493255168 |