Ablikim, M Amplitude Analysis of D_^→π^π^η and First Observation of the W-Annihilation Dominant Decays D_^→a_(980)^π^ and D_^→a_(980)^π^. [electronic resource] - Physical review letters Sep 2019 - 112001 p. digital Publication Type: Journal Article ISSN: 1079-7114 Standard No.: 10.1103/PhysRevLett.123.112001 doi