CRYOGENIC SEARCH FOR FRACTIONALLY CHARGED PARTICLES
1984
13 pages
Published in:
- Phys.Rev.D 29 (1984) 791-803
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Abstract: (APS)
An experiment was performed to test the hypothesis of cryogenic trapping of fractionally charged particles, suggested as a possible explanation for the results of LaRue, Fairbank, Hebard, and Phillips at Stanford. A Nb-filament source was built, which could be cooled to 4.2°K and rapidly heated to several hundred °K. The source was operated in the terminal of a 700-kV Cockcroft-Walton accelerator and energy spectra of positively charged particles emerging from the filament were measured under a variety of operating conditions. No events above a background of 10−2 counts/sec were found in the energy regions where one might have expected several hundred particles of charge +13e or +23e as the source was heated. A mass range from 10 MeV/c2 to 100 GeV/c2 was covered in the experiment. Although negative results are rarely unambiguous, our findings exclude one class of hypotheses which might have explained the apparent fractional charges of the Stanford experiments.- PARTICLE: FRACTIONALLY CHARGED
- QUARK: SEARCH FOR
- LOW TEMPERATURE
- NIOBIUM
- ENERGY SPECTRUM: (CHARGED PARTICLE)
- (CHARGED PARTICLE): ENERGY SPECTRUM
- COUNTERS AND DETECTORS: EXPERIMENTAL RESULTS
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