Strangeness photoproduction in the gamma proton going to neutral Kaon Sigma(+) reaction
Abstract
The photoproduction reaction gammap → K0Sigma+ was analyzed in the photon energy range from 1.15 to 2.35 GeV. This thesis contains the first high-statistics analysis of K0 photoproduction. Data were taken in Hall B at Jefferson Lab using tagged photons incident on a liquid hydrogen target, with all outgoing charged particles in the final states (pi +pi-) (ppi0) and (pi+pi-) (npi +) detected by the CLAS spectrometer. As the reaction gamma p → K0Sigma+ is a rare process, most of the detected events are due to unwanted background reactions. Careful data fits and cross checks are required to identify the reaction being studied. To determine the acceptance for the desired reaction and the possible contamination by background processes, a detailed Monte Carlo simulation of all of these processes is performed. Data sets at beam energies of 2.445 and 3.115 GeV were studied separately and then averaged into a single data set, with much better statistical precision than previous measurements. Our cross sections are smaller than previous experimental data and theoretical predictions based on those data, especially in the forward angular region, but are similar in shape in the total cross section.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 2003
- Bibcode:
- 2003PhDT.......150C