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Experimental Observation of a Heavy ParticleJ
- Source :
- Physical Review Letters. 33:1404-1406
- Publication Year :
- 1974
- Publisher :
- American Physical Society (APS), 1974.
-
Abstract
- We report the observation of a heavy particle $J$, with mass $m=3.1$ GeV and width approximately zero. The observation was made from the reaction $p+\mathrm{Be}\ensuremath{\rightarrow}{e}^{+}+{e}^{\ensuremath{-}}+x$ by measuring the ${e}^{+}{e}^{\ensuremath{-}}$ mass spectrum with a precise pair spectrometer at the Brookhaven National Laboratory's 30-GeV alternating-gradient synchrotron.
Details
- ISSN :
- 00319007
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi...........68eb6a744dc68a5d651f57ea79ab883f