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https://hdl.handle.net/2440/123588
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DC Field | Value | Language |
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dc.contributor.author | Aad, G. | en |
dc.contributor.author | Abbott, B. | en |
dc.contributor.author | Abbott, D. | en |
dc.contributor.author | Abdinov, O. | en |
dc.contributor.author | Abud, A.A. | en |
dc.contributor.author | Abeling, K. | en |
dc.contributor.author | Abhayasinghe, D. | en |
dc.contributor.author | Abidi, S. | en |
dc.contributor.author | AbouZeid, O. | en |
dc.contributor.author | Abraham, N. | en |
dc.contributor.author | Abramowicz, H. | en |
dc.contributor.author | Abreu, H. | en |
dc.contributor.author | Abulaiti, Y. | en |
dc.contributor.author | Acharya, B. | en |
dc.contributor.author | Achkar, B. | en |
dc.contributor.author | Adachi, S. | en |
dc.contributor.author | Adam, L. | en |
dc.contributor.author | Bourdarios, C.A. | en |
dc.contributor.author | Adamczyk, L. | en |
dc.contributor.author | Adamek, L. | en |
dc.contributor.author | et al. | en |
dc.date.issued | 2019 | en |
dc.identifier.citation | PHYSICAL REVIEW LETTERS, 2019; 123(5) | en |
dc.identifier.issn | 0031-9007 | en |
dc.identifier.issn | 1079-7114 | en |
dc.identifier.uri | http://hdl.handle.net/2440/123588 | - |
dc.description.abstract | This Letter describes the observation of the light-by-light scattering process, γγ→γγ, in Pb+Pb collisions at sqrt[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}^{γ}>3 GeV and pseudorapidity |η_{γ}|<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 |
dc.language.iso | English | en |
dc.publisher | AMER PHYSICAL SOC | en |
dc.subject | ATLAS Collaboration | en |
dc.title | Observation of Light-by-Light Scattering in Ultraperipheral Pb plus Pb Collisions with the ATLAS Detector | en |
dc.type | Journal article | en |
dc.identifier.doi | 10.1103/PhysRevLett.123.052001 | en |
pubs.publication-status | Published | en |
dc.identifier.orcid | Jackson, P. [0000-0002-0847-402X] | en |
Appears in Collections: | Physics publications |
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