People interested: Daniele Barducci, Thomas Flacke, Minho Son, Benjamin Fuks, Devdatta Majumder, Ramona Groeber, Haiying Cai …

Motivations and goal

• Exotic decays such as $\rho \to T t$ can eat branching ratio from standard search channels (dilepton, dibosons), rendering direct searches less sensitive (see https://arxiv.org/pdf/1511.01101.pdf Fig. 3
• Investigate the signatures arising from the decay of a heavy bosons (spin 0 and spin 1) in SM quarks and VLQs, e.g. Z'→ VLQ top, ora extra light scalars, e.g. Z' → Z a

• From the polarization of the top arising from the decay is it possible to infer the representation to which the heavy boson belongs, i.e. predict the presence of other states?

Possibile bosons involve

• spin 1 color singlet
• spin 1 color octet
• spin 0 color singlet
• …

Strategies

• Categorize the possible decays

References:

• “Search for a heavy resonance decaying to a top quark and a vector-like top quark at 13 TeV” (arXiv)
• ttZ resonance search https://arxiv.org/pdf/1610.08810.pdf