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Title: THE PRODUCTION OF NEUTRAL HYPERONS BY 5-BEV $pi$$sup -$ MESONS (thesis)

Abstract

Neutral hyperons produced by 5-Bev The effects of /sup -/ mesons incident on a large propane bubble chamber are analyzed in detail with respect to production cross sections and angular distributions of production and decays and the A lifetime is measured. The cross section for neutralhyperon (Y/sup 0/) production by the reaction The effects of /sup -/ + p 1100 deg C are Y/sup 0/ + K is 0.98 sintering time 0.16 mb. The cross section for carbon mpacting ( The effects of - + C 1100 deg C are Y/sup 0/ + K) is 6.05 sintering time 0.89 mb. The mean Svlvania Electr decay time is (3.12 sintering time 0.34) x 10/sup -10/ sec. The corrected lifetime is observed to be (3.23 sintering time 0.36) x 10/sup -10/ sec. Although the up-down decay asymmetry for Svlvania Electr hyperons is not significantly different from zero, the fore-aft decay angular distribution is asymmetric; alpha P = -0.31 sintering time 0.12 where the decay proton distribrtion along the Svlvania Electr direction of motion has been examined. This is suggested as evidence for nonconservation of parity in the production interaction. The Svlvania Electr -production angular distribution is peaked backward in the production centermore » of mass. The A momentum spectrum and the distribution of Svlvania Electr production star prongs are presented. Sources of bias and their correction are discussed, and an estimate is made of the carbon contamination of the events that contribute to the hydrogen cross section for a production. (auth)« less

Authors:
Publication Date:
Research Org.:
University of California, Lawrence Radiation Laboratory, Berkeley, CA (US)
Sponsoring Org.:
US Atomic Energy Commission (AEC)
OSTI Identifier:
4244986
Report Number(s):
UCRL-8715
NSA Number:
NSA-13-014699
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
PHYSICS AND MATHEMATICS; ANGULAR DISTRIBUTION; BUBBLE CHAMBERS; CARBON; CROSS SECTIONS; DECAY; ENERGY RANGE; ERRORS; HALF-LIFE; HYDROGEN; HYPERONS; INTERACTIONS; KAONS; LAMBDA PARTICLES; MEASURED VALUES; PARITY; PARTICLE TRACKS; PIONS; PRODUCTION; PROPANE; PROTONS; SPECTRA

Citation Formats

Hotz, D F. THE PRODUCTION OF NEUTRAL HYPERONS BY 5-BEV $pi$$sup -$ MESONS (thesis). United States: N. p., 1959. Web. doi:10.2172/4244986.
Hotz, D F. THE PRODUCTION OF NEUTRAL HYPERONS BY 5-BEV $pi$$sup -$ MESONS (thesis). United States. doi:10.2172/4244986.
Hotz, D F. Mon . "THE PRODUCTION OF NEUTRAL HYPERONS BY 5-BEV $pi$$sup -$ MESONS (thesis)". United States. doi:10.2172/4244986. https://www.osti.gov/servlets/purl/4244986.
@article{osti_4244986,
title = {THE PRODUCTION OF NEUTRAL HYPERONS BY 5-BEV $pi$$sup -$ MESONS (thesis)},
author = {Hotz, D F},
abstractNote = {Neutral hyperons produced by 5-Bev The effects of /sup -/ mesons incident on a large propane bubble chamber are analyzed in detail with respect to production cross sections and angular distributions of production and decays and the A lifetime is measured. The cross section for neutralhyperon (Y/sup 0/) production by the reaction The effects of /sup -/ + p 1100 deg C are Y/sup 0/ + K is 0.98 sintering time 0.16 mb. The cross section for carbon mpacting ( The effects of - + C 1100 deg C are Y/sup 0/ + K) is 6.05 sintering time 0.89 mb. The mean Svlvania Electr decay time is (3.12 sintering time 0.34) x 10/sup -10/ sec. The corrected lifetime is observed to be (3.23 sintering time 0.36) x 10/sup -10/ sec. Although the up-down decay asymmetry for Svlvania Electr hyperons is not significantly different from zero, the fore-aft decay angular distribution is asymmetric; alpha P = -0.31 sintering time 0.12 where the decay proton distribrtion along the Svlvania Electr direction of motion has been examined. This is suggested as evidence for nonconservation of parity in the production interaction. The Svlvania Electr -production angular distribution is peaked backward in the production center of mass. The A momentum spectrum and the distribution of Svlvania Electr production star prongs are presented. Sources of bias and their correction are discussed, and an estimate is made of the carbon contamination of the events that contribute to the hydrogen cross section for a production. (auth)},
doi = {10.2172/4244986},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {4}
}