Details

Autor(en) / Beteiligte

• Ablikim, M.
• Achasov, M. N.
• Adlarson, P.
• Ai, X. C.
• Aliberti, R.
• Amoroso, A.
• An, M. R.
• An, Q.
• Bai, Y.
• Bakina, O.
• Balossino, I.
• Ban, Y.
• Bao, H.-R.
• Batozskaya, V.
• Begzsuren, K.
• Berger, N.
• Berlowski, M.
• Bertani, M.
• Bettoni, D.
• Bianchi, F.
• Bianco, E.
• 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, T. T.
• Chang, W. L.
• Che, G. R.
• Chelkov, G.
• Chen, C.
• Chen, Chao
• Chen, G.
• Chen, H. S.
• Chen, M. L.
• Chen, S. J.
• Chen, S. L.
• Chen, S. M.
• Chen, T.
• Chen, X. R.
• Chen, X. T.
• Chen, Y. B.
• Chen, Y. Q.
• Chen, Z. J.
• Choi, S. K.
• Chu, X.
• Cibinetto, G.
• Coen, S. C.
• Cossio, F.
• Cui, J. J.
• Dai, H. L.
• Dai, J. P.
• Dbeyssi, A.
• de Boer, R. E.
• Dedovich, D.
• Deng, Z. Y.
• Denig, A.
• Denysenko, I.
• Destefanis, M.
• De Mori, F.
• Ding, B.
• Ding, X. X.
• Ding, Y.
• Dong, J.
• Dong, L. Y.
• Dong, M. Y.
• Dong, X.
• Du, M. C.
• Du, S. X.
• Duan, Z. H.
• Egorov, P.
• Fan, Y. H.
• Fang, J.
• Fang, S. S.
• Fang, W. X.
• Fang, Y.
• Fang, Y. Q.
• Farinelli, R.
• Fava, L.
• Feldbauer, F.
• Felici, G.
• Feng, C. Q.
• Feng, J. H.
• Feng, Y. T.
• Fischer, K.
• Fritsch, M.
• Fu, C. D.
• Fu, J. L.
• Fu, Y. W.
• Gao, H.
• Gao, Y. N.
• Gao, Yang
• Garbolino, S.

Titel

Observation of D + → K S 0 a 0 ( 980 ) + in the Amplitude Analysis of D + → K S 0 π + η

Ist Teil von

• Physical review letters, 2024-03, Vol.132 (13), Article 131903

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2024

Quelle

APS

Beschreibungen/Notizen

• We perform for the first time an amplitude analysis of the decay D + → K S 0 π + η and report the observation of the decay D + → K S 0 a 0 ( 980 ) + using 2.93 fb − 1 of e + e − collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector. As the only W -annihilation-free decay among D to a 0 ( 980 ) pseudoscalar, D + → K S 0 a 0 ( 980 ) + is the ideal decay in extracting the contributions of the W -emission amplitudes involving a 0 ( 980 ) and to study the final-state interactions. The absolute branching fraction of D + → K S 0 π + η is measured to be ( 1.27 ± 0.0 4 stat ± 0.0 3 syst ) % . The branching fractions of intermediate processes D + → K S 0 a 0 ( 980 ) + with a 0 ( 980 ) + → π + η and D + → π + K ¯ 0 * ( 1430 ) 0 with K ¯ 0 * ( 1430 ) 0 → K S 0 η are measured to be ( 1.33 ± 0.0 5 stat ± 0.0 4 syst ) % and ( 0.14 ± 0.0 3 stat ± 0.0 1 syst ) % , respectively. Published by the American Physical Society 2024