Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC
| dc.WoS.categories | Physics, Multidisciplinary | en_US |
| dc.authorid | 0000-0001-5050-8441 | en_US |
| dc.contributor.author | Çetin, Serkant Ali | |
| dc.date.accessioned | 2020-12-18T06:10:12Z | |
| dc.date.available | 2020-12-18T06:10:12Z | |
| dc.date.issued | 2017-09 | |
| dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
| dc.description.abstract | Light-by-light scattering (gamma gamma -> gamma gamma) is a quantum-mechanical process that is forbidden in the classical theory of electrodynamics. This reaction is accessible at the Large Hadron Collider thanks to the large electromagnetic field strengths generated by ultra-relativistic colliding lead ions. Using 480 mu b(-1) of lead-lead collision data recorded at a centre-of-mass energy per nucleon pair of 5.02 TeV by the ATLAS detector, here we report evidence for light-by-light scattering. A total of 13 candidate events were observed with an expected background of 2.6 +/- 0.7 events. After background subtraction and analysis corrections, the fiducial cross-section of the process Pb + Pb (gamma gamma) -> Pb-(center dot) + Pb-(center dot) gamma gamma, for photon transverse energy E-T > 3 GeV, photon absolute pseudorapidity vertical bar eta vertical bar < 2.4, diphoton invariant mass greater than 6 GeV, diphoton transverse momentum lower than 2 GeV and diphoton acoplanarity below 0.01, is measured to be 70 +/- 24 (stat.) +/- 17 (syst.) nb, which is in agreement with the standard model predictions. | en_US |
| dc.fullTextLevel | Full Text | en_US |
| dc.identifier.doi | 10.1038/NPHYS4208 | |
| dc.identifier.scopus | 2-s2.0-85028933316 | en_US |
| dc.identifier.scopusquality | Q1 | en_US |
| dc.identifier.uri | https://hdl.handle.net/11411/2913 | |
| dc.identifier.uri | https://doi.org/10.1038/NPHYS4208 | |
| dc.identifier.wos | WOS:000409235100017 | en_US |
| dc.identifier.wosquality | Q1 | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.issue | 9 | en_US |
| dc.language.iso | en | en_US |
| dc.national | International | en_US |
| dc.numberofauthors | 200+ | en_US |
| dc.pages | 852-+ | en_US |
| dc.publisher | NATURE PUBLISHING GROUP | en_US |
| dc.relation.ispartof | NATURE PHYSICS | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.title | Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC | |
| dc.type | Article | |
| dc.volume | 13 | en_US |
