Strange Meson Production in ElectronPositron Annihilation at 29.0 GEV.
Abstract
Neutral kaon and K*('(+OR)) production have been studied using the PEP4 Time Projection Chamber detector facility at a 29 GeV center of mass energy. The data, corresponding to an integrated luminosity of 77 pb('1), was taken at the Stanford Linear Accelerated Center positron electron (PEP) storage ring. Neutral kaons were found by looking for secondary vertices in the weak decay K(,8)('0) (>) (pi)('+)(pi)('). The particle identification and tracking capability of the Time Projection Chamber (TPC) was used to locate secondary vertices. The K*('(+OR)) signal was found by forming the invariant mass of (pi)('(+OR )) with identified K(,8)('0). The resulting inclusive K('0) and K*('(+OR)) cross sections were measured as a function of x where x = E/E(,beam). From the differential cross sections the production rate of K('0) was 1.22 (+OR ) 0.03 (+OR) 0.15 per event. The production rate of K*('(+OR )) was 0.414 (+OR) 0.04 (+OR) 0.08 per event. The differential cross sections are well described by monte carlo hadronization models. Comparison of the measured K(,8)('0) production rate with previously published (pi)('(+OR)) results show that the production of strange mesons relative to nonstrange mesons is suppressed by a factor of 0.32 (+OR) 0.18. The K*('(+OR)) and K('0) production rates indicate that the spin 1 to spin 0 strange meson production ratio is 0.67 (+OR) 0.32.
 Publication:

Ph.D. Thesis
 Pub Date:
 1985
 Bibcode:
 1985PhDT.......154M
 Keywords:

 Physics: Elementary Particles and High Energy