Study of ϕ(2170) at BESIII

¹ University of Science and Technology of China, Hefei, 230026, China
² State Key Laboratory of Particle Detection and Electronics, Hefei, 230026, China

^* e-mail: gaoxinl@mail.ustc.edu.cn

Published online: 1 February 2019

Abstract

After the first observation of ϕ(2170) in the process $e^{+}{e}^{-}\to {\gamma }_{ISR}\varphi f_0(980)$, several theoretical interpretations have been proposed to explain the nature of ϕ(2170). Aspects of ϕ(2170) are still not fully understood until now. Large J/ψ events and energy scan data samples collected by the BESIII detector provide the opportunity to perform the further study to ϕ(2170). In this presentation, $J/\psi \to \eta \varphi (2170)$ and $e^{+}{e}^{-}\to \eta \varphi (2170)$ are studied to improve the measurements of mass and width of ϕ(2170). e⁺e⁻ → K⁺K⁻, $\varphi K^{+}{K}^{-}$ and K⁺K⁻K⁺K⁻ are investigated to search for the new decay mode of ϕ(2170). Those studies would be useful for improving the understanding of the nature of ϕ(2170).