Constraining nonlinear corrections to Maxwell electrodynamics using  γ γ  scattering

Medeiros, Léo Gouvêa; Akmansoy, Pierre Niau

Constraining nonlinear corrections to Maxwell electrodynamics using γ γ scattering

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dc.contributor.author	Medeiros, Léo Gouvêa
dc.contributor.author	Akmansoy, Pierre Niau
dc.date.accessioned	2020-08-26T14:59:07Z
dc.date.available	2020-08-26T14:59:07Z
dc.date.issued	2019-06-06
dc.description.resumo	The recent light-by-light scattering cross section measurement made by the ATLAS Collaboration is used to constrain nonlinear corrections to Maxwell electrodynamics parametrized by the Lagrangian L 1⁄4 F þ 4αF2 þ 4βG2 þ 4δFG. The ion’s radiation is described using the equivalent photon approximation, and the influence of four different nuclear charge distributions is evaluated. Special attention is given to the interference term between the Standard Model and the nonlinear corrections amplitudes. By virtue of the quadratic dependence on α, β, and δ, the nonlinear contribution to the Standard Model γγ cross section is able to delimit a finite region of the parameter’s phase space. The upper values for α and β in this region are of order 10−10 GeV−4, a constraint of at least 12 orders of magnitude more precise when compared to low-energy experiments. An upper value of the same order for δ is obtained for the first time in the LHC energy regime. We also give our predictions for the Standard Model cross section measured at ATLAS for each distribution and analyze the impact of the absorption factor. We finally give predictions for the future measurements to be done with upgraded tracking acceptance jηj < 4 by the ATLAS Collaboration	pt_BR
dc.identifier.citation	AKMANSOY, P.N.; MEDEIROS, L.G.. Constraining nonlinear corrections to Maxwell electrodynamics using γγ scattering. Physical Review D, [s.l.], v. 99, n. 11, p. 115005, 6 jun. 2019. Disponível em: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.115005. Acesso em: 12 ago. 2020. http://dx.doi.org/10.1103/physrevd.99.115005.	pt_BR
dc.identifier.doi	10.1103/physrevd.99.115005
dc.identifier.issn	2470-0010
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29895
dc.language	en	pt_BR
dc.publisher	American Physical Society	pt_BR
dc.subject	Nonlinear corrections	pt_BR
dc.subject	Maxwell electrodynamics	pt_BR
dc.subject	γ γ scattering	pt_BR
dc.title	Constraining nonlinear corrections to Maxwell electrodynamics using γ γ scattering	pt_BR
dc.type	article	pt_BR