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New limits on coloured three jet resonances
Journal of High Energy Physics ( IF 5.4 ) Pub Date : 2020-09-01 , DOI: 10.1007/jhep09(2020)131
Hassan Easa , Thomas Gregoire , Daniel Stolarski

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.

中文翻译:

彩色三射流共振的新限制

我们考虑了彩色三线态费米子的实验限制,这些费米子通过可以在壳上或壳外的标量介体主要衰变为三个射流。这些费米子出现在可以解决层次问题的顶级模型中,并且由于具有显着背景的杂乱全强子最终状态,因此对这种情况的限制比传统顶级模型的限制要弱。然而,我们确实发现,虽然没有针对这种情况进行专门的搜索,尤其是在壳上调解器的情况下,但 LHC 全强子搜索套件仍然限制了参数空间的很大一部分。特别是,我们发现对双射流和三射流共振的对产生的搜索是互补的,涵盖了参数空间的不同区域。我们还发现,如果最终状态富含 b-jets,
更新日期:2020-09-01
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