The decay J/ψ → γX(JP) → γϕϕ: Dynamical analysis of the X(JP) → ϕϕ resonance contributions

A.A. Kozhevnikov

doi:10.1051/epjconf/201921203005

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 212, 03005 (2019)
https://doi.org/10.1051/epjconf/201921203005

The decay J/ψ → γX(J^P) → γϕϕ: Dynamical analysis of the X(J^P) → ϕϕ resonance contributions

A.A. Kozhevnikov¹^,2^*

¹ Laboratory of Theoretical Physics, S.L. Sobolev Institute of Mathematics, 630090, Novosibirsk, Russian Federation
² Novosibirsk State University, 630090, Novosibirsk, Russian Federation

^* e-mail: kozhev@math.nsc.ru

Published online: 17 June 2019

Abstract

The dynamics of the J^PC = 0^-+,0⁺⁺, and 2⁺⁺ resonance contributions to the decay $J / ψ \to γ X (J^{P}) \to γ ϕ ϕ$ $J/\psi {\rm{ }} \to {\rm{ }}\gamma X\left( {{J^P}} \right) \to {\rm{ }}\gamma \phi \phi$ is analysed using the data obtained by BESIII collaboration. The effective coupling constants parameterising invariant amplitudes of the transitions $J / ψ \to γ X (J^{P C})$ $J/\psi {\rm{ }} \to {\rm{ }}\gamma X\left( {{J^{PC}}} \right)$ and $X (J^{P}) \to ϕ ϕ$ $X\left( {{J^P}} \right) \to {\rm{ }}\phi \phi$ and masses $X (J^{P})$ $X\left( {{J^P}} \right)$ of found from the fits are used to plot $ϕ ϕ$ $\phi \phi$ the mass spectrum of each J^PC component.

© The Authors, published by EDP Sciences, 2019

This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.