|
|||||
|
|
D and D meson production near 4 GeV in e+e− annihilation |
|
| Authors: | G. Goldhaber J.E. Wiss G.S. Abrams M.S. Alam A.M. Boyarski M. Breidenbach W. Chinowsky J. Dorfan G.J. Feldman G. Hanson J.A. Jaros A.D. Johnson J.A. Kadyk D. Lüke V. Lüth H.L. Lynch R.J. Madaras H.K. Nguyen G.H. Trilling |
| Affiliation: | 1. Department of Physics and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720, USA;2. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305, USA |
| Abstract: | We have studied momentum spectra for D0 (0) and D± mesons produced near 4 GeV in e+e? annihilation and find that production is dominated by two-body reactions involving D and D1 states where the D1 (charged and neutral) have masses near 2.01 GeV/c2. A detailed study of D momentum spectra near Ecm = 4.028 GeV allows determination of masses and branching ratios of D and D1 states. Lastly we find that events containing a D0 meson conserve strangeness, thus establishing upper limits on D0-0 mixing and on the effects of charm changing neutral currents. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |