New upper limit on the decay {eta}{r_arrow}e{sup +}e{sup {minus}}
Journal Article
·
· Physical Review, D
OSTI ID:543878
We have searched for the rare decay of the {eta} meson {eta}{r_arrow}e{sup +}e{sup {minus}} using the CLEO II detector. The {eta}{close_quote}s were produced in e{sup +}e{sup {minus}} collisions with 10 GeV center-of-mass energy at the Cornell Electron Storage Ring (CESR). We find with 90{percent} confidence the upper limit on the branching fraction B({eta}{r_arrow}e{sup +}e{sup {minus}}){lt}7.7{times}10{sup {minus}5}. The application of conventional elementary particle theory to this decay predicts a branching fraction of about 10{sup {minus}9}. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 543878
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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