26-30 July 2021
Europe/Berlin timezone

Study of phi(2170) at BESIII (12'+3')

29 Jul 2021, 10:30


Parallel session talk QCD and Hadronic Physics T06: QCD and Hadronic Physics


Dong Liu (HIM, GSI, USTC)


In e+e- collisions between 2 and 3 GeV, excited states of rho, omega and phi can be produced directly. Especially the resonances around 2GeV like rho(2000), rho(2150) and \phi(2170) are not fully understood yet. Theorists describe the phi(2170) as a traditional s s-bar state, an s s-bar g hybrid, a tetraquark state, a Lambda Lambda-bar bound state, or a phi KK resonance. The predicted decay widths vary strongly depending on the assumed nature of phi(2170). With energy scan data collected by the BESIII collaboration between 2.0 GeV and 3.08 GeV, the properties of phi(2170) are studied systematically in PWAs of its expected decay modes, such as e+e- -> K+K-pi0pi0, phi eta', phi eta, K+K-, and eta' pi+pi-.

Collaboration / Activity BESIII

Primary authors

Zhiqing Liu (Shandong University) Dong Liu (HIM, GSI, USTC)

Presentation Materials