Production of neutral Higgs boson and two charged charginos from electron-positron annihilation via Z0 propagator

Paper ID : 1098-ISCHU

Authors

Sara Abdelrady Abdelmenam Hassan *

Abstract

In the current research, the production of neutral Higgs boson (H_l^°) and two charged Charginos (χ ̃_i^+,χ ̃_j^-) owing to electron-positron annihilation via Z0 propagator and Higgs boson as a leg for the process have been investigated. e^- (p_1 )+e^+ (p_3 )→χ ̃_i^+ (p_2 )+ χ ̃_j^- (p_4 )+H_l^° (p_5 ) The maximum cross section for this interaction were estimated, via H^o as a leg and Z0 propagator where i=j=1,2 and l=1,2,3.This group contain 48 of different probabilities represented by (2) of Feynman diagrams. Taking into consideration selected carefully parameters in the minimal supersymmetric standard model (MSSM). By applying the laws of conservations of charge, lepton number, baryon number, linear and angular momentum, energy, parity and strangeness the reaction is allowed. After studying all possible probabilities for the reaction 〖 e〗^- (p_1 )+e^+ (p_3 )→χ ̃_i^+ (p_2 )+ χ ̃_j^- (p_4 )+H_l^° (p_5 ), we were successful in identifying the scenario with the highest cross section for the reaction. The process's production cross-sections as a function of mass center energy (S) have been calculated, to select the best cross-section. The best value of cross section (σ) has been found which is (27.9689 ) Pb at mass center energy (S= 2488.1 GeV) interval (2000- 2600) Gev and when masses of Charginos are m_(χ ̃_j^- )=900 GeV, m_(χ ̃_i^+ )=700GeV and mass of neutral Higgs boson is〖 m〗_(H_l^° )=140 GeV, via Z^0 boson propagator exchange for the reaction via〖 Z〗^0 propagator when〖 H〗^o,〖 A〗^o,〖 h〗^o are legs from e- or e+ of the reaction e^- (P_1 )+e^+ (P_3 )→Z^o (P_2+P_4)→χ ̃_i^+ (p_2 )+ χ ̃_j^- (p_4 )

Keywords

Keywords: Chargino – Neutralino – Neutral Higgs boson – Supersymmetry – Minimal supersymmetric standard model

Status: Abstract Accepted (Poster Presentation)