THE PRODUCTION CROSS-SECTIONS FOR THE PROCESS e~+(P_1)+e~-(P_3)→H_i~+(P_2)+H_i~-(P_4)+X_l~0(P_5)

摘要

The cross-secti0n, in electron (e~-)positron (e~+) collision, are calculated over range of center of mass energy for the process. e~+ (P_2)+e~-(P_2)→H_i~+(P_2)+H_i~-(P_4)+χ_l~0(P_5) Four different group of Feynman diagrams are taken into consideration depending on the type of the propagator: i - Production of χ~0 and H~±when z~0 andH~0are the propagators exchange. ii - Production of χ~0and H~±when χ~0 is a leg from electron or positron, and γis the propagator. iii - Production of χ~0and H~±when χ~0 is a leg from electron and positron,and Z~o is the propagator. iv - Production of χ~0 and H~±when χ~0 is a leg from electron or positron, and H~0 is the propagator. Where (i, j =1,2,3, and =1,2,3,4) The cross section for each group is calculated according to a carefully selected set of parameters.These different possible (1155) situations are graphed and tabulated. The production mechanisms can be detected as: e~+(P_1)+e~-(P_3-P_5)→γ~0(P_2+P_4)→H_i~+(P_2)+H_i~-(P_4) e~+(P_1)+e~-(P_3-P_5)→Z~0(P_2+H_4)→H_i~+(P_2)+H_i~-(P_4) e~+(P_1)+e~-(P_3-P_5)→H~00(P_2+H_4)→H_i~+(P_2)+H_i~-(P_4) e~+(P_1)+e~-(P_3)→H_i~+(P_2)+H_i~-(P_4)