Observation of Light-by-Light Scattering in Ultraperipheral Pb plus Pb Collisions with the ATLAS Detector
dc.WoS.categories | Physics, Multidisciplinary | en_US |
dc.authorid | 0000-0001-5050-8441 | en_US |
dc.contributor.author | Çetin, Serkant Ali | |
dc.date.accessioned | 2020-12-21T07:49:56Z | |
dc.date.available | 2020-12-21T07:49:56Z | |
dc.date.issued | 2019-07-31 | |
dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
dc.description.abstract | This Letter describes the observation of the light-by-light scattering process, gamma gamma -> gamma gamma, in Pb + Pb collisions at root S-NN = 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 E-T(gamma) > 3 GeV and pseudorapidity vertical bar eta(gamma)vertical bar < 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. | en_US |
dc.fullTextLevel | Full Text | en_US |
dc.identifier.doi | 10.1103/PhysRevLett.123.052001 | en_US |
dc.identifier.issn | 1079-7114 | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.pmid | 31491300 | en_US |
dc.identifier.scopus | 2-s2.0-85071896312 | en_US |
dc.identifier.uri | https://hdl.handle.net/11411/2925 | |
dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.123.052001 | |
dc.identifier.wos | WOS:000479003100006 | en_US |
dc.identifier.wosquality | Q1 | en_US |
dc.indekslendigikaynak | Web of Science | en_US |
dc.indekslendigikaynak | Scopus | en_US |
dc.indekslendigikaynak | PubMed | en_US |
dc.issue | 5 | en_US |
dc.language.iso | en | en_US |
dc.national | International | en_US |
dc.numberofauthors | 200+ | en_US |
dc.publisher | AMER PHYSICAL SOC | en_US |
dc.relation.ispartof | PHYSICAL REVIEW LETTERS | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | ULTRARELATIVISTIC HEAVY-ION | en_US |
dc.subject | DELBRUCK SCATTERING | en_US |
dc.subject | PHYSICS | en_US |
dc.title | Observation of Light-by-Light Scattering in Ultraperipheral Pb plus Pb Collisions with the ATLAS Detector | en_US |
dc.type | Article | en_US |
dc.volume | 123 | en_US |