Abstract In this note, we briefly review some theory aspects of Quantum Chromodynamics at the future circular lepton collider (FCC-ee).

Abstract Muons provide a clean experimental signature, typically traversing the whole apparatus without decaying. Muon detection systems are therefore usually located at rather large distance from primary interaction vertex after all other sub-detectors. As such, apparatuses FCC-ee will certainly employ very muon systems, covering areas of few thousand square meters. For obvious reasons cost, m...

This article investigates the secure energy efficiency (EE) optimization problem in a cognitive satellite-terrestrial network with capable eavesdropper. The objective is to maximize EE for primary satellite while satisfying allowable signal-to-interference-plus-noise ratio requirements of secondary and users along within transmit power limitation both terrestrial base station. Owing nonconvexit...

It is shown that the experimental data of ψ and ψ are consistent with a −90◦ phase between the strong and eletromagnetic decay amplitudes. The ee → ρπ measured at ψ is also consistent with the branching ratio predicted by Rosner’s scenario on ρπ puzzle in charmonium physics. This scenario leads to a possible large charmless branching ratio in ψ decays. work in collaboration with C. Z. Yuan and ...