Exotic decays of heavy B quarks

Patrick J. Fox, David Tucker-Smith
2016 Journal of High Energy Physics  
Heavy vector-like quarks of charge -1/3, B, have been searched for at the LHC through the decays B→ bZ, bh, tW. In models where the B quark also carries charge under a new gauge group, new decay channels may dominate. We focus on the case where the B is charged under a U(1)^' and describe simple models where the dominant decay mode is B→ bZ^'→ b (bb̅). With the inclusion of dark matter such models can explain the excess of gamma rays from the Galactic center. We develop a search strategy for
more » ... rch strategy for this decay chain and estimate that with integrated luminosity of 300 fb^-1 the LHC will have the potential to discover both the B and the Z' for B quarks with mass below ∼ 1.6 TeV, for a broad range of Z' masses. A high-luminosity run can extend this reach to 2 TeV.
doi:10.1007/jhep01(2016)038 fatcat:kurvrzeeozcf7biuw7kidgllue