Dispersive analysis of omega/phi -> 3 pi, pi gamma*

作者：Danilkin, I. V.^*; Fernandez-Ramirez, C.; Guo, P.; Mathieu, V.; Schott, D.; Shi, M.; Szczepaniak, A. P.

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2015, 91(9): 094029.

DOI：10.1103/PhysRevD.91.094029

• TREIMAN-TYPE EQUATIONS
• EFFECTIVE-FIELD THEORY
• VECTOR-MESONS
• LIGHT VECTOR
• KINEMATICAL CONSTRAINTS
• 3-BODY DECAY
• ISOBAR MODEL
• SCATTERING
• COLLISIONS
• PARTICLES

The decays omega/phi -> 3 pi are considered in the dispersive framework that is based on the isobar decomposition and subenergy unitarity. The inelastic contributions are parametrized by the power series in a suitably chosen conformal variable that properly accounts for the analytic properties of the amplitude. The Dalitz plot distributions and integrated decay widths are presented. Our results indicate that the final-state interactions may be sizable. As a further application of the formalism we also compute the electromagnetic transition form factors of omega/phi -> pi(0)gamma*.

• 出版日期2015-5-27
• 单位北京大学