MSSM corrections to the top–antitop quark forward–backward asymmetry at the Tevatron

We study the effects of the complete supersymmetric QCD and electroweak one-loop corrections to the forward–backward asymmetry at the Fermilab Tevatron collider. We work in the complex Minimal Supersymmetric Standard Model (MSSM), only restricted by the condition of minimal flavor violation (MFV). We perform a comprehensive scan over the relevant parameter space of the complex MFV–MSSM and determine the maximal possible contributions of these MSSM loop corrections to the forward–backward asymmetry in the center-of-mass frame. We find that the SUSY loop-induced asymmetry at the Tevatron with can be at most +2 % for very light SUSY particles, i.e. for and , which reduces to 0.1 % for gluino and squark masses in the range 850 GeV–1000 GeV and a light top squark of .