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 these 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

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

Further questions

• 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?