Exploring anomalous hbb and hbbγ couplings in the context of the LHC and an e+e- collider.

In light of the 125 GeV Higgs (h) discovery at the Large Hadron Collider (LHC), one of the primary goals of the LHC and possible future colliders is to understand its interactions more precisely. Here we have studied the h-b-b-γ effective interaction terms arising out of gauge-invariant dimension-6 operators in a model-independent setting, as a potential source of new physics. Their role in some detectable final states has been compared with those coming from anomalous h-b-b interactions. We have considered the bounds coming from the existing collider and other low-energy experimental data in order to derive constraints on the potential new physics couplings and predict possible collider signals for the two different new physics scenarios in the context of 14 TeV LHC and a future e + e - machine. We conclude that the anomalous h-b-b-γ coupling can be probed at the LHC at 14 TeV at the 3σ level with an integrated luminosity of ~ 2000 fb-1, which an e+e- collider can probe at the 3σ level with ~ 12 (7)     fb-1 at √s = 250 (500) GeV. It is also found that anomalous h-b-b interactions, subject to the existing LHC constraints, cannot compete with the rates driven by h-b-b-γ effective interactions. [ABSTRACT FROM AUTHOR]