A search for a mass-550 particle

Technical Report · Sun Jan 01 04:00:00 EST 1961

OSTI ID:6402556

Monnig, G

The following conclusions are drawn on the basis of 228 negative and 291 positive stoppings for which Cerenkov light was recorded: (1) No resolved mass measurement in the 550 region was obtained; (2) If a mass-550 particle had produced Cerenkov light and stopped in the range hodoscope, it is unlikely that it would have had the appearance of one of the observed events; (3) If a mass-550 particle had produced Cerenkov light and stopped in the range hodoscope, it would have been resolved, partially resolved or not resolved depending on its range channel. No information is furnished by the group of 29 events for which no Cerenkov light was recorded. The measurement of Cerenkov light, originally intended as a safeguard against the unusual type of error, which affects only a few measurements, was not used in this manner since no resolved mass-550 measurements were found. The likelihood of obtaining higher-mass measurements than those observed is 88% if mass-550 particles occur with a relative abundance, R, of 1/200 and is plotted vs R.

• Research Organization: Washington Univ., St. Louis, MO (USA)
• OSTI ID: 6402556
• Report Number(s): AD-251806
• Country of Publication: United States
• Language: English

Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHERENKOV RADIATION
CLOUD CHAMBERS
COSMIC RADIATION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
GAS TRACK DETECTORS
HADRONS
IONIZING RADIATIONS
MASS
MEASURING INSTRUMENTS
MESONS
RADIATION DETECTORS
RADIATIONS