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16–21 Aug 2019
Guilin Bravo Hotel, Guilin, China
Asia/Shanghai timezone

Study of phi(2170) at BESIII

20 Aug 2019, 09:35
20m
Golden Cassia (Guilin Bravo Hotel, Guilin, China)

Golden Cassia

Guilin Bravo Hotel, Guilin, China

14 South Ronghu Road, Xiangshan, Guilin 541002, Guangxi, China
Parallel Session 1: Meson spectroscopy Session 1: Meson spectroscopy

Speaker

Wenbiao Yan (University of Science and Technology of China)

Description

The nature of phi(2170) is still unclear. phi(2170) is proposed to be 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 state. The predicted decay width of the individual explanations is quite different. Information from experiments on the known decay modes of phi(2170) is limited, and the measured values of mass and width of phi(2170) are inconsistent. With 500 pb^-1 data collected by the BESIII detector between 2.0GeV and 3.08GeV, we measure the line-shape of e+e- -> K+K-/2(K+K-)/phi eta/phi eta’/omega pi0/omega eta/K+K-pi0pi0, and extract resonance parameters by fitting the Born cross sections of the exclusive decay modes

Primary author

Wenbiao Yan (University of Science and Technology of China)

Presentation materials