“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 15216
School of Particles and Accelerator
  Title:   Study of Higgs Effective Couplings at Electron-Proton Colliders
1.  Hoda Hesari
2.  Hamzeh Khanpour
3.  Mojtaba Mohammadi Najafabadi
  Status:   Published
  Journal: Phys. Rev. D
  No.:  095041
  Vol.:  97
  Year:  2018
  Supported by:  IPM
We perform a search for beyond the standard model dimension-six operators relevant to the Higgs boson at the Large Hadron Electron Collider (LHeC) and the Future Circular Hadron Electron Collider (FCC-he). With a large amount of data (few ab−1) and collisions at TeV scale, both LHeC and FCC-he provide excellent opportunities to search for the BSM effects. The study is done through the process eph j νe where the Higgs boson decays into a pair of b b and we consider the main sources of background processes including a realistic simulation of detector effects. For the FCC-he case, in some signal scenarios to obtain an efficient event reconstruction and to have a good background rejection, jet substructure techniques are employed to reconstruct the boosted Higgs boson in the final state. In order to assess the sensitivity to the dimension-six operators, a shape analysis on the differential cross sections is performed. Stringent bounds are found on the Wilson coefficients of dimension-six operators with the integrated luminosities of 1 ab−1 and 10 ab−1 which in some cases show improvements with respect to the high-luminosity LHC results.

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