Measurement of the branching ratios {psi}{sup {prime}}{r_arrow}e{sup +}e{sup {minus}}, {psi}{sup {prime}}{r_arrow}J/{psi}{pi}{pi}, and {psi}{sup {prime}}{r_arrow}J/{psi}{eta}
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
- Instituto Nazionale di Fisica Nucleare and University of Ferrara, 44100 Ferrara (Italy)
- Instituto Nazionale di Fisica Nucleare and University of Genoa, 16146 Genoa (Italy)
- University of California at Irvine, California 92717 (United States)
- Northwestern University, Evanston, Illinois 60208 (United States)
- Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
- Instituto Nazionale di Fisica Nucleare and University of Turin, 10125 Turin (Italy)
We have observed exclusive decays of the {psi}{sup {prime}} in an experiment where the {psi}{sup {prime}} is formed in antiproton-proton annihilations. We report the branching ratios {ital B}({psi}{sup {prime}}{r_arrow}e{sup +}e{sup {minus}})=(8.3{plus_minus}0.5{sub stat}{plus_minus}0.7{sub syst}){times}10{sup {minus}3}, {ital B}({psi}{sup {prime}}{r_arrow}J/{psi}{pi}{sup +}{pi}{sup {minus}})=0.283{plus_minus}0.021{sub stat}{plus_minus}0.020{sub syst}, {ital B}({psi}{sup {prime}}{r_arrow}J/{psi}{pi}{sup 0}{pi}{sup 0})=0.184{plus_minus}0.019{sub stat}{plus_minus}0.013{sub syst}, {ital B}({psi}{sup {prime}}{r_arrow}J/{psi}{eta})=0.032{plus_minus}0.010{sub stat}{plus_minus}0.002{sub syst}. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 488774
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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