Analytic continuation of nucleon electromagnetic form factors in the time-like region. (22nd June 2021)

• Record Type: Journal Article
• Authors: Alberto, Pedro; Drago, Alessandro; Mangoni, Alessio; Moretti, Simone; Pacetti, Simone
• Is Part Of: Journal of physics. Volume 48:Number 8(2021)
• Publication Date: 2021-06-22
• Subjects: analytic continuation -- Skyrme model -- nucleon form factors; Nuclear physics -- Periodicals; Particles (Nuclear physics) -- Periodicals; Physique nucléaire -- Périodiques; Particules (Physique nucléaire) -- Périodiques; Kernfysica; Elementaire deeltjes; 539.7
• DOI: 10.1088/1361-6471/abfbc2
• Languages: English
• ISSNs: 0954-3899

Abstract

Abstract: The possibility to compute nucleon electromagnetic form factors in the time-like region by analytic continuation of their space-like expressions, obtained in the framework of a generic model of nucleons, has been explored. We have developed a procedure to analytically solve Fourier transforms of the nucleon electromagnetic current and hence to obtain form factors defined in all kinematic regions and fulfilling the first-principles requirements of analyticity and unitarity. The results obtained in the particular case of the Skyrme model are discussed and compared to data, both in the space-like and time-like region.