1. Search for MoreJParticles
- Author
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Mingshui Chen, J. J. Aubert, M. Rohde, J. D. Burger, Samuel C.C. Ting, W. H. Toki, Yonghoon Lee, G. Everhart, J.W. Glenn, John M. Leong, P. J. Biggs, T. Sanford, U. Becker, T. G. Rhoades, and Sau Lan Wu
- Subjects
Physics ,Nuclear physics ,Nuclear reaction ,Particle physics ,Pion ,Meson ,Branching fraction ,TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY ,Antimatter ,General Physics and Astronomy ,Proton Synchrotron ,Elementary particle ,Nucleon - Abstract
We report here on an experiment done at the 30-GeV proton synchrotron at Brookhaven National Laboratory using a large-acceptance ($delta$m=1 GeV) pair spectrometer with a mass resolution of plus-or-minus5 MeV, to search for additional long-lived particles which decay into K$sup -$$pi$$sup +$, K$sup +$$pi$$sup -$, pp, K$sup +$K$sup -$, $pi$$sup +$$pi$$sup -$, K$sup -$p, $pi$$sup - $p, K$sup +$p, or $pi$$sup +$p. The result, based on 2times10$sup 7$ events, shows that, to a sensitivity comparable to or lower than the production of J particles (production) times (decay branching ratio) approx. =10$sup -34$ cm$sup 2$, no additional states were found.
- Published
- 1975