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


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Abstract

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: gηNN2/4π ≤ 0.01, and a bound on vector meson exchange models is also obtained.

About the authors

V. A. Tryasuchev

National Research Tomsk Polytechnic University

Author for correspondence.
Email: tva@tpu.ru
Russian Federation, Tomsk

B. A. Alekseev

National Research Tomsk Polytechnic University

Email: tva@tpu.ru
Russian Federation, Tomsk

V. S. Yakovleva

National Research Tomsk Polytechnic University

Email: tva@tpu.ru
Russian Federation, Tomsk

A. G. Kondratyeva

National Research Tomsk Polytechnic University

Email: tva@tpu.ru
Russian Federation, Tomsk

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