Strange-particle production in 8 BeV/c proton-proton interactions
Firebaugh, Morris William
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https://hdl.handle.net/2142/23996
Description
Title
Strange-particle production in 8 BeV/c proton-proton interactions
Author(s)
Firebaugh, Morris William
Issue Date
1966
Doctoral Committee Chair(s)
Goldwasser, E.L.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
strange-particle production
proton-proton interactions
Brookhaven hydrogen bubble chamber
strange particle events
Language
en
Abstract
An experiment has been performed in which 37,000
pictures were obtained of the 80 Ii Brookhaven hydrogen
bubble chamber exposed to 8 BeV/c protons. All 2, 4, 6,
and 8 prong events with one or more associated kinks or V's
were scanned for and 7,300 candidates for strange particle
events were found. Of these, 3,600 were successfully measured
and3 of these, 1,260 strange particle events were identified.
A fiducial region was selected and the partial cross
section for 33 different final states calculated; This
corresponds to a corrected cross sec~ion for identified
strange particle events of 950 ± 95 ~b. The total strange
particle production cross section is estimated to be 1.8 robe
Evidence for N (1236), Yl (138S), Yo (140S), and Yl (1660)
formation is presented 0 Data concerning the existence of
reported di-baryon resonances in the AN final state is
presented, and the conclusion is drawn that no such resonances
appear in the A Nand ZN mass distributions of this experiment 0.
Finally,.,the .3 body final states are examined in detail.
An anomalous peaking is observed in the K+1\.. invariant mass
in the K+P J\ final state. The simple one pion exchange
model does not seem to predi.ct adequately the distribution
observed. The OEEM also predicts a cross section for this
final state a factor of 2 larger than the measured value of
54 ± 7 ~b if no cutoff in 4-momentum transfer to the proton
is imposed.
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