Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/63615Registo completo
| Campo DC | Valor | Idioma |
|---|---|---|
| dc.contributor.author | Onofre, A. | por |
| dc.contributor.author | Castro, Nuno Filipe | por |
| dc.contributor.author | ATLAS Collaboration | por |
| dc.date.accessioned | 2020-02-03T01:11:01Z | - |
| dc.date.available | 2020-02-03T01:11:01Z | - |
| dc.date.issued | 2019 | - |
| dc.identifier.citation | Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abed Abud, A., Abeling, K., . . . Zwalinski, L. (2019). Observation of Light-by-Light Scattering in Ultraperipheral Pb+Pb Collisions with the ATLAS Detector. [Article]. Physical Review Letters, 123(5). doi: 10.1103/PhysRevLett.123.052001 | por |
| dc.identifier.issn | 0031-9007 | - |
| dc.identifier.uri | https://hdl.handle.net/1822/63615 | - |
| dc.description.abstract | This Letter describes the observation of the light-by-light scattering process, γγ→γγ, in Pb+Pb collisions at √sNN=5.02 TeV. The analysis is conducted using a data sample corresponding to an integrated luminosity of 1.73 nb−1, collected in November 2018 by the ATLAS experiment at the LHC. Light-by-light scattering candidates are selected in events with two photons produced exclusively, each with transverse energy EγT>3 GeV and pseudorapidity |ηγ|<2.4, diphoton invariant mass above 6 GeV, and small diphoton transverse momentum and acoplanarity. After applying all selection criteria, 59 candidate events are observed for a background expectation of 12±3 events. The observed excess of events over the expected background has a significance of 8.2 standard deviations. The measured fiducial cross section is 78±13(stat)±7(syst)±3(lumi) nb. | por |
| 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; BMWFW and FWF, 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 and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF, and Cantons of Bern and Geneva, 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, CANARIE, CRC, and Compute Canada, Canada; COST, ERC, ERDF, Horizon 2020, and Marie Sklodowska-Curie Actions, European Union; Investissements d' Avenir Labex and Idex, ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales, and Aristeia Programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; CERCA Programme Generalitat de Catalunya, 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 contributo | por |
| dc.language.iso | eng | por |
| dc.publisher | American Physical Society (APS) | por |
| dc.relation | CERN/FIS-PAR/0008/2017 | por |
| dc.rights | openAccess | por |
| dc.title | Observation of Light-by-Light Scattering in Ultraperipheral Pb+Pb Collisions with the ATLAS Detector | por |
| dc.type | article | por |
| dc.peerreviewed | yes | por |
| dc.relation.publisherversion | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.052001 | por |
| oaire.citationIssue | 5 | por |
| oaire.citationVolume | 123 | por |
| dc.identifier.eissn | 1079-7114 | - |
| dc.identifier.doi | 10.1103/PhysRevLett.123.052001 | por |
| dc.identifier.pmid | 31491300 | por |
| dc.subject.fos | Ciências Naturais::Ciências Físicas | por |
| dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | - |
| dc.subject.wos | Science & Technology | por |
| sdum.journal | Physical Review Letters | por |
| oaire.version | VoR | por |
| Aparece nas coleções: | LIP - Artigos/papers | |
Ficheiros deste registo:
| Ficheiro | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| PhysRevLett.123.052001.pdf | 431,75 kB | Adobe PDF | Ver/Abrir |
