2025/08/29 by Ya-Rong Wang, Cheng-Qun Pang, Pang, Cheng-Qun +5 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics
paper · pdf · doi:10.48550/arxiv.2508.21442
openalex publication_date 2025/08/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
The COMPASS Collaboration recently reported the observation of a new resonance, a4(2610), which has sparked our interest in studying the a4 family with IGJPC=1-4++. In this work, we investigate the mass spectra and Okubo-Zweig-Iizuka-allowed two-body strong decays of the a4 family using the modified Godfrey-Isgur quark model and the quark-pair creation model. We also explore the possibility of identifying a4(2610) as a 4F or 2H state, and our numerical results suggest that it could be a promising candidate for the a4(2H) state. In addition, we predict the masses and the widths of the a4(1H) and a4(3F) states.