Moment-operator expansion for the two-meson, two-photon and fermion–antifermion states

2001/05/31 by A. V. Anisovich, A V Anisovich, V. V. Anisovich +7 · 6 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1088/0954-3899/28/1/302

published as J.Phys.G28:15-32,2002 · 21 pages, Latex, no fugures

arxiv created 2001/09/11 · openalex publication_date 2001/11/30 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

A complete set of formulae in terms of the moment-operator expansion is presented for the two-meson, two-photon and fermion–antifermion states that can be used in the analysis of scalar ( S ) and pseudoscalar ( P ) meson production in p and γγ collisions: p → SS , PP , SP and γγ → SS , PP , SP . The method of generalization of the formulae for the amplitudes of multi-meson production in the two-stage processes: of the type ( spin - j ) resonance + meson → three mesons is also discussed.

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