LHC signatures of a vectorlike b'

Many beyond the standard model extensions predict the existence of heavy vectorlike fermions. We study the LHC signatures of one such heavy vectorlike fermion, called b', with electromagnetic charge -1/3 like the SM b-quark, but which could generically have different SU(2)L and U(1)Y quantum numbers. Our emphasis will be on the phenomenology due to b↔b' mass mixing, present after electroweak symmetry breaking. We focus on aspects which distinguish a vectorlike b' from a chiral b' and include tree-level decays of the b' into tW, bZ and bh final states. While our analysis is largely model independent, we take as a motivating example warped-space models in which a vectorlike b' appears as the custodial partner of the top-quark.