New limits on coloured three jet resonances

Journal of High Energy Physics

Thomas Gregoire¹  Hassan Easa¹  Daniel Stolarski¹ 

[1] Ottawa-Carleton, Institute for Physics, Carleton University, 1125 Colonel By Drive, K1S 5B6, Ottawa, ON, Canada;

关键词: Jets;    Phenomenological Models;   

DOI  :  10.1007/JHEP09(2020)131

来源: Springer

【 摘 要 】

We consider experimental limits on colour triplet fermions that decay dominantly to three jets via a scalar mediator that can be on- or off-shell. These fermions arise in top-partner models that can solve the hierarchy problem, and limits on this scenario are weaker than those on traditional top-partner models because of the messy all-hadronic final state with significant backgrounds. We do find, however, that while there are no dedicated searches for this scenario, especially in case of an on-shell mediator, the suite of LHC all- hadronic searches still constrains a significant portion of the parameter space. In particular, we find that searches for pair production of di-jet and tri-jet resonances are complementary, covering different regions of parameter space. We also find that if the final state is rich in b- jets, current limits do not change significantly relative to the scenario with all light jets, and we describe how modifications of current search strategies can improve limits in that case.

【 授权许可】

CC BY