Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS
Autor(a) principal: | |
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Data de Publicação: | 2011 |
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/1822/48757 |
Resumo: | A measurement of the cross-section for ϒ(1S)→μ+μ−ϒ(1S)→μ+μ− production in proton–proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the ϒ(1S)ϒ(1S) transverse momentum in two bins of rapidity, |yϒ(1S)|<1.2|yϒ(1S)|<1.2 and 1.2<|yϒ(1S)|<2.41.2<|yϒ(1S)|<2.4. The measurement requires that both muons have transverse momentum View the MathML sourcepTμ>4 GeV and pseudorapidity |ημ|<2.5|ημ|<2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb−1, collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in Pythia while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model. |
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Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLASCiências Naturais::Ciências FísicasCiências Naturais::Ciências FísicasScience & TechnologyA measurement of the cross-section for ϒ(1S)→μ+μ−ϒ(1S)→μ+μ− production in proton–proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the ϒ(1S)ϒ(1S) transverse momentum in two bins of rapidity, |yϒ(1S)|<1.2|yϒ(1S)|<1.2 and 1.2<|yϒ(1S)|<2.41.2<|yϒ(1S)|<2.4. The measurement requires that both muons have transverse momentum View the MathML sourcepTμ>4 GeV and pseudorapidity |ημ|<2.5|ημ|<2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb−1, collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in Pythia while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model.We acknowledge the support of ANPCyT, Argentina; YerPhl, 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; ARTEMIS, 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; MEXT and 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; DOE and NSF, United States of America.info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoOnofre, A.Castro, Nuno Filipe Silva FernandesATLAS Collaboration20112011-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/48757engAad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., . . . Collaboration, A. (2011). Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS. Physics Letters B, 705(1-2), 9-27. doi: 10.1016/j.physletb.2011.09.0920370-26931873-244510.1016/j.physletb.2011.09.092http://www.sciencedirect.com/science/article/pii/S0370269311011920info: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:RCAAP2023-07-21T12:15:50ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS |
title |
Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS |
spellingShingle |
Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS Onofre, A. Ciências Naturais::Ciências Físicas Ciências Naturais::Ciências Físicas Science & Technology |
title_short |
Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS |
title_full |
Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS |
title_fullStr |
Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS |
title_full_unstemmed |
Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS |
title_sort |
Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS |
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 Ciências Naturais::Ciências Físicas Science & Technology |
topic |
Ciências Naturais::Ciências Físicas Ciências Naturais::Ciências Físicas Science & Technology |
description |
A measurement of the cross-section for ϒ(1S)→μ+μ−ϒ(1S)→μ+μ− production in proton–proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the ϒ(1S)ϒ(1S) transverse momentum in two bins of rapidity, |yϒ(1S)|<1.2|yϒ(1S)|<1.2 and 1.2<|yϒ(1S)|<2.41.2<|yϒ(1S)|<2.4. The measurement requires that both muons have transverse momentum View the MathML sourcepTμ>4 GeV and pseudorapidity |ημ|<2.5|ημ|<2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb−1, collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in Pythia while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011 2011-01-01T00:00:00Z |
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/1822/48757 |
url |
http://hdl.handle.net/1822/48757 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., . . . Collaboration, A. (2011). Measurement of the gamma(1S) production cross-section in pp collisions at root s=7 TeV in ATLAS. Physics Letters B, 705(1-2), 9-27. doi: 10.1016/j.physletb.2011.09.092 0370-2693 1873-2445 10.1016/j.physletb.2011.09.092 http://www.sciencedirect.com/science/article/pii/S0370269311011920 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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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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