Top quark three-body decays in the R-parity violating MSSM

Abstract

In the minimal supersymmetric standard model the R-parity violating interactions can trigger various exotic three-body decays for the top quark, which may be accessible at the LHC. In this work we examine the R-violating decays t-> c X_1 X_2, which include the tree-level processes t-> c l^-_i l^+_j (l_i=e, mu, tau) and t->c d_i \bar{d}_j (d_i=d, s, b), as well as the loop induced processes t->c g X (X=g, γ, Z, h). We find that the hereto weakly constrained R-violating couplings can render the decay branching ratios quite sizable, some of which already reach the sensitivity of the Tevatron collider and can be expored at the LHC with better sensitivity.

version in PRD (Tevatron bounds updated)

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Cited by in corpus (3)

• Searches for anomalous $tqZ$ couplings from the trilepton signal of $tZ$ associated production at the 14 TeV LHC
• Searches for the FCNC couplings from top-Higgs associated production signal with $h\to \gamma \gamma$ at the LHC
• Top quark rare three-body decays in the littlest Higgs model with T-parity