arXiv:hep-ph/9804331·v4·High Energy Physics — Phenomenology
Top-quark pair production via polarized and unpolarized protons in the supersymmetric QCD
Yu Zeng-Hui (1,3)🇦🇹 · Herbert. Pietschmann (1)🇦🇹 · Ma Wen-Gan (2,3)🇨🇳 · Han Liang (3)🇨🇳 · Jiang Yi (3) ((1)Institut fur Theoretische Physik, Universitat Wien (2)CCAST (World Laboratory), Beijing, P.R.China (3)Department of Modern Physics, University of Science and Technology of China (USTC), Hefei, Anhui P.R.China)🇨🇳
Abstract
The QCD corrections to the top-quark pair production via both polarized and unpolarized gluon fusion in collisions are calculated in the Minimal Supersymmetric Model(MSSM). We find the MSSM QCD corrections can reach 4% and may be observable in future precise experiments. Furthermore, we studied the CP violation in the MSSM, our results show that the CP violating parameter is sensitive to the masses of SUSY particles (It becomes zero, when the c.m. energy is less than twice the masses of both gluino and stop quarks.) and may reach .
Comments: 32 pages, 17 figures