A unified quark-plus-hadronic framework extracts the ρ bare mass from a chiral quark model and its width and bare-state fraction from ππ P-wave phase shifts.
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How to understand the $\rho$ resonance from the quark model and $\pi\pi$ $P$-wave phase shift
A unified quark-plus-hadronic framework extracts the ρ bare mass from a chiral quark model and its width and bare-state fraction from ππ P-wave phase shifts.