First high-statistics partial-wave decomposition of pi-pi-pi-eta at COMPASS finds a prominent 1-+ spin-exotic sector and no clear evidence for the excited pi-1 state claimed by BNL E852.
Haas (for the COMPASS Collaboration), Nuovo Cim.C 47 (2024) 4, 150
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Partial-wave decomposition of the diffractively produced $\pi^-\pi^+\pi^-\eta$ final state at COMPASS
First high-statistics partial-wave decomposition of pi-pi-pi-eta at COMPASS finds a prominent 1-+ spin-exotic sector and no clear evidence for the excited pi-1 state claimed by BNL E852.