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Investigation of the Resonance-like a1(1420) Signal and First Partial-Wave Decomposition of the π -KS0KS0 Final State at COMPASS
(2024-04-26)
In 2014, a supernumerous light-meson state was found by the COMPASS collaboration. This discovery bore similarities to some of the XYZ states in the heavy-meson sector, discovered at e+e - ......