Nonresonant Background in Isobaric Models of Photoproduction of η-Mesons on Nucleons

V. A. Tryasuchev; B. A. Alekseev; V. S. Yakovleva; A. G. Kondratyeva

doi:10.1007/s11182-016-0780-1

Nonresonant Background in Isobaric Models of Photoproduction of η-Mesons on Nucleons

Autores: Tryasuchev V.A.¹, Alekseev B.A.¹, Yakovleva V.S.¹, Kondratyeva A.G.¹
Afiliações:
1. National Research Tomsk Polytechnic University
Edição: Volume 59, Nº 3 (2016)
Páginas: 359-364
Seção: Article
URL: https://journals.rcsi.science/1064-8887/article/view/237076
DOI: https://doi.org/10.1007/s11182-016-0780-1
ID: 237076

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Resumo

Within the framework of isobaric models of pseudoscalar meson photoproduction, the nonresonant background of photoproduction of η-mesons on nucleons is investigated as a function of energy. A bound on the magnitude of the pseudoscalar coupling constant of the η-meson with a nucleon is obtained: g_ηNN²/4π ≤ 0.01, and a bound on vector meson exchange models is also obtained.