Speaker
Liangchen Liu
(Nankai University)
Description
BESIII is a symmetric e+e- collider operating at c.m. energy from 2.0 to 4.95 GeV. With the world’s largest data set of J/psi (10 billion), psi(3686) (2.6 billion), and about 25 fb^-1 scan data from 3.77 to 4.95 GeV, various dark sectors produced in e+e- annihilation and meson decay processes can be searched for at BESIII. Axion-like particles (ALPs) are pseudo-Goldstone bosons arising from some spontaneously broken global symmetry, addressing the strong CP or hierarchy problems. In this talk, we report the search for invisible dark photon decays using initial state radiation, search for invisible muonic Z’ boson decays, and search for axion-like particles with a light scalar or vector particle in the muonic decay of J/psi.
Primary authors
Beijiang Liu
(Institute of High Energy Physics, Chinese Academy of Sicences)
Liangchen Liu
(Nankai University)