R-parity violation in (t+t̄)g̃ production at LHC and Tevatron

We study the production of (t+t̄)g̃ at the hadron colliders in an R-parity (Rp) violating supersymmetric model. This process provides us with information not only about Rp violation, but may also help us in detecting the supersymmetry itself. It is possible to detect an Rp violating signal (with single gluino production) at the future hadron colliders, such as Fermilab Tevatron Run II or CERN Large Hadron Collider (LHC), if the parameters in the supersymmetric R/p interactions are not too small, e.g. for mg̃=1 TeV, λ′′=0.1, still hundreds of events are produced at LHC with luminosity 30 fb−1. Even if we could not detect a signal of R/p in the experiment, we get stringent constraints on the heavy flavour R/p couplings. In addition to the minimal supersymmetric standard model we have also considered some models with a heavy gluino as the lightest supersymmetric particle.