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Exotics decay of heavy bosons in VLQs and extra scalars

People interested: Daniele Barducci, Thomas Flacke, Minho Son, Benjamin Fuks, Devdatta Majumder, Ramona Groeber, Haiying Cai, Tetiana Berger-Hryn'ova , Alexandra Carvalho, Abhishek Iyer Tom Rizzo…

Motivations and goal

  • Exotic decays such as $\rho \to T \bar t$ can eat branching ratio from standard search channels (dilepton, dibosons), rendering these direct searches less sensitive (see e.g. 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, or extra light scalars, e.g. Z' → Z a

Possibile bosons involve

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


  • Categorize the possible decays of the identified resonances. This was done for VLQ in Les Houches 2015

  • Check the sensitivity of SM searches. For example the $\rho \to T \bar t \to Z t \bar t$ has the same final state of the SM $t\bar t Z$ search
  • Check the sensitivity of single production mode. Also in this case the final state can be the same. However single production searches usually exploit a forward jet, which is not present here



  • 20-06-2017


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?
2017/groups/np/zptovlq.txt · Last modified: 2017/09/07 10:32 by daniele.barducci