| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1853486 | Physics Letters B | 2008 | 5 Pages |
Abstract
We report measurements of the line shapes of D+D−D+D−, D0D¯0 and DD¯ production as well as the line shape of the ratio of the production rates of D+D−D+D− and D0D¯0 in e+e−e+e− annihilation at ψ(3770)ψ(3770) resonance. We find that the line shapes of D+D−D+D−, D0D¯0 and DD¯ production are similar to an anomalous line shape of cross sections for e+e−→hadronse+e−→hadrons observed in the center-of-mass energy range from 3.70 to 3.87 GeV.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
M. Ablikim, J.Z. Bai, Y. Ban, J.G. Bian, X. Cai, H.F. Chen, H.S. Chen, H.X. Chen, J.C. Chen, Jin Chen, Y.B. Chen, S.P. Chi, Y.P. Chu, X.Z. Cui, Y.S. Dai, Z.Y. Deng, L.Y. Dong, Q.F. Dong, S.X. Du, Z.Z. Du, J. Fang, S.S. Fang, C.D. Fu, C.S. Gao, Y.N. Gao,