[Guo, Xingyu; Xu, Zhe; Shi, Shuzhe; Zhuang, Pengfei] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
[Guo, Xingyu; Xu, Zhe; Shi, Shuzhe; Zhuang, Pengfei] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China.
[Xu, Nu] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA.
[Xu, Nu] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
[Xu, Nu] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.