Cairo University

MTPR Journal

 

PRODUCTION NEUTRALINO AND TWO HIGGS BOSONS FROM ELECTRON-POSITRON ANNIHELATION VIA H0 AND Z 0 PROPAGATORS

2019-04-22
M. M. Ahmed, and Zainab. A.H.
Physics Department, Helwan University Cairo, Egypt
Vol./Issue: 19 , id: 267

The cross-sections σ (pb), in electron (e-) - positron (e+) annihelation, are calculated over range of center of mass energy S (Gev) for the process: ( ) ( ) ( ) ( ) ~ ( ) 5 0 4 0 2 0 1 3 e P e P H P H P P i j         .There are two groups of Feynman diagrams are taken into consideration depending on the types of the propagators, Group (a) Production of 0 i H , 0j H and ~0   , when and H0 are the propagators, and Group (b) Production of 0 i H , 0j H and ~0   , when H0 and are the propagators, where i, j  1,2,3, and  1,2,3,4 . There are(288) different possible situations. The cross sections for this process are calculated carefully according to a selected set of parameters. then graphed and tabulated, The production cross-sections values mechanisms can be detected as: ( ) ( ) ( ) ( ) ( ) 4 0 2 0 2 4 0 1 3 e P e P H P P H P H P i j        . ( ) ( ) ( ) ( ) ( ) 4 0 2 0 2 4 0 1 3 e P e P Z P P H P H P i j        . At S interval (1200 - 1600) Gev, the best value of σ is (28x10-2) Pb in group (a) . when each masses of Higss bosons ( 125 / 2 0 , m Gev c Hi j  ) and the Neutralino mass ( 700 / 2. ~0 m  Gev c   )