Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/108156| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Santos, S. P. Amor dos | - |
| dc.contributor.author | Carvalho, J. | - |
| dc.contributor.author | Fiolhais, M. C. N. | - |
| dc.contributor.author | Galhardo, B. | - |
| dc.contributor.author | Veloso, F. | - |
| dc.contributor.author | Wolters, H. | - |
| dc.contributor.author | ATLAS Collaboration | - |
| dc.date.accessioned | 2023-08-14T08:20:50Z | - |
| dc.date.available | 2023-08-14T08:20:50Z | - |
| dc.date.issued | 2017 | - |
| dc.identifier.uri | https://hdl.handle.net/10316/108156 | - |
| dc.description.abstract | The production of two prompt J/ ψ mesons, each with transverse momenta pT> 8.5 GeV and rapidity |y| < 2.1 , is studied using a sample of proton-proton collisions at s=8 TeV, corresponding to an integrated luminosity of 11.4 fb- 1 collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised J/ ψ production, is measured as a function of the transverse momentum of the lower-pTJ/ ψ meson, di-J/ ψpT and mass, the difference in rapidity between the two J/ ψ mesons, and the azimuthal angle between the two J/ ψ mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two J/ ψ mesons. The total and double parton scattering cross-sections are compared with predictions. The effective cross-section of double parton scattering is measured to be σeff= 6.3 ± 1.6 (stat) ± 1.0 (syst) mb. | pt |
| dc.description.sponsorship | 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; BMWFWandFWF,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 and DNSRC, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia;BMBF,HGF, and MPG, Germany;GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN,Norway;MNiSWand NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC andWallenberg Foundation, Sweden; SERI, SNSF andCantons of Bern andGeneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, the Canada Council, CANARIE, CRC, Compute Canada, FQRNT, and the Ontario Innovation Trust, Canada; EPLANET, ERC, ERDF, FP7, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union; Investissements d’Avenir Labex and Idex, ANR, RégionAuvergne and Fondation Partager le Savoir, France;DFGandAvHFoundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF; BSF, GIF and Minerva, Israel; BRF, Norway; CERCA Programme Generalitat de Catalunya, Generalitat Valenciana, Spain; the Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, 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), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [87]. | pt |
| dc.language.iso | eng | pt |
| dc.publisher | Springer Nature | pt |
| dc.rights | openAccess | pt |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
| dc.title | Measurement of the prompt J/ ψ pair production cross-section in pp collisions at √s=8 TeV with the ATLAS detector | pt |
| dc.type | article | - |
| degois.publication.firstPage | 76 | pt |
| degois.publication.issue | 2 | pt |
| degois.publication.title | European Physical Journal C | pt |
| dc.peerreviewed | yes | pt |
| dc.identifier.doi | 10.1140/epjc/s10052-017-4644-9 | pt |
| degois.publication.volume | 77 | pt |
| dc.date.embargo | 2017-01-01 | * |
| uc.date.periodoEmbargo | 0 | pt |
| item.fulltext | Com Texto completo | - |
| item.languageiso639-1 | en | - |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.grantfulltext | open | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| crisitem.author.researchunit | CFisUC – Center for Physics of the University of Coimbra | - |
| crisitem.author.researchunit | LIP – Laboratory of Instrumentation and Experimental Particle Physics | - |
| crisitem.author.researchunit | LIP – Laboratory of Instrumentation and Experimental Particle Physics | - |
| crisitem.author.orcid | 0000-0002-3015-7821 | - |
| crisitem.author.orcid | 0000-0002-9588-1773 | - |
| Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais | |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Measurement-of-the-prompt-J--pair-production-crosssection-in-pp-collisions-at-s8-TeV-with-the-ATLAS-detectorEuropean-Physical-Journal-C.pdf | 2.95 MB | Adobe PDF | View/Open |
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