Can New Colored Particles Illuminate the Higgs?
Enrico Bertuzzo, Pedro A. N. Machado, Renata Zukanovich Funchal
TL;DR
This paper investigates how new colored vector-like fermions could affect Higgs boson signals, comparing theoretical predictions with experimental constraints, and exploring potential signatures at the LHC and in quarkonium states.
Contribution
It provides a detailed analysis of the impact of minimal extensions with new colored fermions on Higgs processes and collider phenomenology, including LHC bounds and quarkonium states.
Findings
New colored fermions can significantly modify Higgs to diphoton and gluon-gluon production rates.
LHC bounds constrain the mass and couplings of these new fermions.
Possible formation of quarkonium states offers additional experimental signatures.
Abstract
We analyze the behavior of Higgs to diphoton rate and Higgs gluon-gluon production cross section in minimal extensions of the Standard Model comprising new colored vector-like fermions that do not mix with the ordinary ones. We compare these information with constraints coming from electroweak precision measurements. We compute pair production cross sections for the lightest fermion and discuss the LHC bounds. Finally, we study the phenomenology of possible quarkonium states composed by these new colored fermions.
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