Accession Number:

ADA053297

Title:

A Study of the Reaction pi(+)p yields Delta (++)rho(0), with Incoming Pion Momentum of 5.8 GeV/c.

Descriptive Note:

Master's thesis,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF PHYSICS

Personal Author(s):

Report Date:

1977-06-01

Pagination or Media Count:

64.0

Abstract:

A sample of 2613 events of the type pip yields pipipi- were extracted, using the bubble chamber photographs measured by the PEPR Precision Encoding and Pattern Recognition point guidance system. The data was reduced using the standard TVGP, SQUAW, and ARROW programs. The sample of four-prong four-constraint events was analyzed under two separate processes, a cluster analysis using the rapidity variable, and a modified Prism Plot analysis using longitudinally Lorentz invariant parameters. Results of the two analyses in obtaining a sample of pip yields Deltarho0 events were compared. Total cross sections for the reactions pi or -p yields pi or -pipi- and the partial cross section for the Deltarho0 channel were given. Comparisons between the Prism Plot data and the predictions of the Dar- Watts-Weisskopf Absorption Model were made. Spin density matrix elements were calculated and studied. The absorption parameters Rs and ds were determined. Evidence that these absorption radii are not independent of the exchange mechanism is introduced.

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE