“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 14684
School of Particles and Accelerator
  Title:   Probing Higgs boson couplings in H+γ production at the LHC
1.  Hamzeh Khanpour
2.  Sara Khatibi
3.  Mojtaba Mohammadi Najafabadi
  Status:   Published
  Journal: Phys. Lett. B
  Vol.:  773
  Year:  2017
  Pages:   462-469
  Supported by:  IPM
In this paper, we examine the potential of Higgs boson production associated with a photon at the LHC to probe the new physics effects in the framework of the standard model effective field theory. It is shown that the differential kinematic distributions such as photon transverse momentum and invariant mass of Higgs+γ in Higgs associated production are powerful variables to explore the coefficients of dimension six operators. The analysis is performed in the decay channel of Higgs boson into a bb pair including the main sources of background processes and a realistic simulation of the detector effects. We provide constraints at 95% confidence level on the Wilson coefficients of dimension-six operators affecting Higgs boson plus a photon production. We show to what extent these limits could be improved at the high luminosity LHC. The effect of these constraints on a well-motivated beyond standard model scenario is presented.

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