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We have explored the prospect of probing a neutral scalar ($H$) produced inassociation with one $b$-quark and decaying either invisibly or into a pair of$b$-quarks at the LHC with centre of mass energy $\sqrt s = 14$ TeV. In thisregard, we adopt an effective theory approach to parameterize a $Hb\bar bg$vertex arising from a dimension six operator that encompasses the effect ofsome new physics setting in at a high scale. We concentrate solely on thefive-flavor scheme to ascertain the sensitivity of the 14 TeV LHC in probingsuch an effective coupling as a function of the scalar mass at the highestpossible projected luminosity, $3000~{\rm fb}^{-1}$. Through our multivariateanalysis using machine learning algorithm we show that staying within theperturbative limit of the Wilson coefficient of the effective interaction,evidence with statistical significance of $3\sigma$ can be obtained in twodifferent signal regions for $m_H\lesssim 2$ TeV and the scale of new physics$\Lambda = 3$ TeV.

Probing heavy scalars with an effective $Hb\bar bg$ coupling at the LHC