University of Illinois Urbana-Champaign

Production of Positive Kaon Negative Kaon and Ppbar Pairs in High Energy Photoproduction (phi-Prime)

Olszewski, Christopher John

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Description

Title
Production of Positive Kaon Negative Kaon and Ppbar Pairs in High Energy Photoproduction (phi-Prime)
Author(s)
Olszewski, Christopher John
Issue Date
1985
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Elementary Particles and High Energy
Language
eng
Abstract
  • Using the Fermilab broad-band neutral beam and a multi-particle spectrometer, we have investigated the channels: (UNFORMATTED TABLE FOLLOWS)
  • K('+)K('-)
  • photon + d (IMPLIES) (n, p, d, or X)
  • ppbar(TABLE ENDS)
  • In K('+)K('-) production, we make precise measurements of the elastic phi photoproduction cross section between 35 GeV and 85 GeV. Between these limits, we see the elastic cross section rise by 25%. At K('+)K('-) masses higher than the phi, we see an enhancement centered at 1.72 (+OR-) .02 GeV, with a width of .12 (+OR-) .05 GeV. We measure the cross section to be 8.0 (+OR-) 2.8 nb/nucleon, with an additional systematic error of 16%. Measurements are made of its production characteristics. The most probable interpretation of this state is a radial excitation of the phi, or phi-prime. Production of ppbar pairs is measured. The ppbar mass spectrum displays no obvious peaks, either in elastic or inelastic photoproduction. Limits are set for previously reported possible states in ppbar electropro- duction, which are significantly below the reported cross sections.
Graduation Semester
1985
Type of Resource
text
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http://hdl.handle.net/2142/77378

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