Measurement of singly Cabibbo-suppressed decays D → ωππ

Date Issued
09-09-2020
Author(s)
Ablikim, M.
Achasov, M. N.
Adlarson, P.
Ahmed, S.
Albrecht, M.
Amoroso, A.
An, Q.
Anita,
Bai, Y.
Bakina, O.
Ferroli, R. Baldini
Balossino, I.
Ban, Y.
Begzsuren, K.
Bennett, J. V.
Berger, N.
Bertani, M.
Bettoni, D.
Bianchi, F.
Biernat, J.
Bloms, J.
Bortone, A.
Boyko, I.
Briere, R. A.
Cai, H.
Cai, X.
Calcaterra, A.
Cao, G. F.
Cao, N.
Cetin, S. A.
Chang, J. F.
Chang, W. L.
Chelkov, G.
Chen, D. Y.
Chen, G.
Chen, H. S.
Chen, M. L.
Chen, S. J.
Chen, X. R.
Chen, Y. B.
Cheng, W. S.
Cibinetto, G.
Cossio, F.
Cui, X. F.
Dai, H. L.
Dai, J. P.
Dai, X. C.
Dbeyssi, A.
de Boer, R. B.
Dedovich, D.
Deng, Z. Y.
Denig, A.
Denysenko, I.
Destefanis, M.
de Mori, F.
Ding, Y.
Dong, C.
Dong, J.
Dong, L. Y.
Dong, M. Y.
Du, S. X.
Fang, J.
Fang, S. S.
Fang, Y.
Farinelli, R.
Fava, L.
Feldbauer, F.
Felici, G.
Feng, C. Q.
Fritsch, M.
Fu, C. D.
Fu, Y.
Gao, X. L.
Gao, Y.
Gao, Y.
Gao, Y. G.
Garzia, I.
Gersabeck, E. M.
Gilman, A.
Goetzen, K.
Gong, L.
Gong, W. X.
Gradl, W.
Greco, M.
Gu, L. M.
Gu, M. H.
Gu, S.
Gu, Y. T.
Guan, C. Y.
Guo, A. Q.
Guo, L. B.
Guo, R. P.
Guo, Y. P.
Guo, Y. P.
Guskov, A.
Han, S.
Han, T. T.
Han, T. Z.
Hao, X. Q.
Harris, F. A.
DOI
Abstract
Using 2.93 fb-1 of e+e- collision data taken at a center-of-mass energy of 3.773 GeV by the BESIII detector at the BEPCII, we measure the branching fractions of the singly Cabibbo-suppressed decays D→ωππ to be B(D0→ωπ+π-)=(1.33±0.16±0.12)×10-3 and B(D+→ωπ+π0)=(3.87±0.83±0.25)×10-3, where the first uncertainties are statistical and the second ones systematic. The statistical significances are 12.9σ and 7.7σ, respectively. The precision of B(D0→ωπ+π-) is improved by a factor of 2.1 over prior measurements, and B(D+→ωπ+π0) is measured for the first time. No significant signal for D0→ωπ0π0 is observed, and the upper limit on the branching fraction is B(D0→ωπ0π0)<1.10×10-3 at the 90% confidence level. The branching fractions of D→ηππ are also measured and consistent with existing results.
Volume
102