European Physical Journal C: Particles and Fields (Feb 2023)
Feasibility of the observation of a heavy scalar through the fully hadronic final state at the LHeC
Abstract
Abstract The proposed future Large Hadron electron collider provides sufficient center of mass energies, $$\sqrt{s}$$ s , to probe heavy particles decaying into $$W^\pm (Z)-$$ W ± ( Z ) - boson of mass $$>2m_W$$ > 2 m W $$(2m_Z)$$ ( 2 m Z ) . In this work we present a study to produce one such heavy CP even scalar H of mass $$2m_h< m_H < 2 m_t$$ 2 m h < m H < 2 m t through charged-current production mode where $$H \rightarrow W^+W^-$$ H → W + W - , where hadronic decay of $$W^\pm -$$ W ± - boson is considered to reconstruct $$m_H$$ m H . Due to the presence of missing energy and forward jet in this channel, it is challenging to reconstruct $$m_H$$ m H with above final state and thus we employed three different reconstruction methods and discuss the significance of each one. For this analysis we consider a benchmark value of $$m_H = 270$$ m H = 270 GeV and $$\sqrt{s} \approx 1.3$$ s ≈ 1.3 TeV with an assumed luminosity of 1 ab $$^{-1}$$ - 1 .