Searching for top flavor violating resonances

We study new top flavor violating resonances that are singly produced in association with a top at the LHC. Such top flavor violating states could be responsible for the Tevatron top forward-backward asymmetry. Since top flavor violating states can directly decay to a top (or antitop) and jet, and are produced in conjunction with another (oppositely charged) top, the direct signature of such states is a tj (or (t) over barj) resonance in t (t) over barj events. In general, these states can be very light and have O(1) couplings to the top sector so that they are copiously produced. We present a search strategy and estimate the discovery potential at the early LHC by implementing the strategy on simulated data. For example, with 1 fb(-1) at 7 TeV, we estimate that a W' coupling to d(R)(t) over bar (R) can be constrained at the 3 sigma level for g(R) = 1 and m(W)' = 200 GeV, weakening to g(R) = 1.75 for m(W)' 600 GeV. With the search we advocate here, a bound at a similar level could be obtained for top flavor violating Z's, as well as triplet and sextet diquarks.