@article{167b91ebfb804499a9d187eda2aa6bbf,
title = "Observation of the Semileptonic Decay D0 →a0 (980)-e+νe and Evidence for D+ →a0 (980)0e+νe",
abstract = "Using an e+e- collision data sample of 2.93 fb-1 collected at a center-of-mass energy of 3.773 GeV by the BESIII detector at BEPCII, we report the observation of D0→a0(980)-e+νe and evidence for D+→a0(980)0e+νe with significances of 6.4σ and 2.9σ, respectively. The absolute branching fractions are determined to be B(D0→a0(980)-e+νe)×B(a0(980)-→ηπ-)=[1.33-0.29+0.33(stat)±0.09(syst)]×10-4 and B(D+→a0(980)0e+νe)×B(a0(980)0→ηπ0)=[1.66-0.66+0.81(stat)±0.11(syst)]×10-4. This is the first time the a0(980) meson has been measured in a D0 semileptonic decay, which would open one more interesting page in the investigation of the nature of the puzzling a0(980) states.",
author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and S. Ahmed and M. Albrecht and M. Alekseev and A. Amoroso and An, {F. F.} and Q. An and Y. Bai and O. Bakina and {Baldini Ferroli}, R. and Y. Ban and K. Begzsuren and Bennett, {D. W.} and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and E. Boger and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and A. Calcaterra and Cao, {G. F.} and Cetin, {S. A.} and J. Chai and Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and G. Chen and Chen, {H. S.} and Chen, {J. C.} and Chen, {M. L.} and Chen, {S. J.} and Chen, {X. R.} and Chen, {Y. B.} and W. Cheng and Chu, {X. K.} and G. Cibinetto and F. Cossio and Dai, {H. L.} and Dai, {J. P.} and A. Dbeyssi and D. Dedovich and Deng, {Z. Y.} and A. Denig and Hajime Muramatsu and Ron Poling",
note = "Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society.",
year = "2018",
month = aug,
day = "24",
doi = "10.1103/PhysRevLett.121.081802",
language = "English (US)",
volume = "121",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "8",
}