Observation of the decay Ds+ → ωπ+η

作者：Ablikim, M.; Achasov, M. N.; Adlarson, P.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, C. M. R.; An, Q.; Bai, Y.; Bakina, O.; Ferroli, R. Baldini; Balossino, I.; Ban, Y.; Batozskaya, V.; Becker, D.; Begzsuren, K.; Berger, N.; Bertani, M.; Bettoni, D.; Bianchi, F.; Bianco, E.; Bloms, J.; Bortone, A.; Boyko, I.; Briere, R. A.; Brueggemann, A.; Cai, H.; Cai, X.; Calcaterra, A.; Cao, G. F.; Cao, N.; Cetin, S. A.; Chang, J. F.; Chang, W. L.; Che, G. R.; Chelkov, G.; Chen, C.; Chen, Chao; Chen, G.

来源：Physical Review D, 2023, 107(5): 052010.

DOI：10.1103/PhysRevD.107.052010

Using 7.33 fb(-1) of e(+)e(-) collision data collected by the BESIII detector at c.m. energies between 4.128 GeV and 4.226 GeV, we observe for the first time the decay D-s(+/-) -> omega pi(+/-)eta with a statistical significance of 7.6 sigma. The measured branching fraction of this decay is (0.54 +/- 0.12 +/- 0.04)%, where the first uncertainty is statistical and the second is systematic.