Single Top and Higgs Production in e?p collisions

High Energy Particle Physics Workshop 2015

Kumar, Mukesh^1

National Institute for Theoretical Physics, School of Physics, Mandelstam Institute for Theoretical Physics, University of the Witwatersrand, Johannesburg, Wits

2050, South Africa^1

关键词: Anomalous couplings;    Detector parameters;    Lorentz;    Self-couplings;    The standard model;    Top quarks;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/645/1/012005/pdf
DOI  :  10.1088/1742-6596/645/1/012005

来源: IOP

【 摘 要 】

In this proceedings some studies on the prospects of single top production at the Large Hadron Electron Collider (LHeC) and double Higgs production at the Future Circular Hadron Electron Collider (FCC-he) shall be presented. In particular, we investigated the tbW couplings via single top quark production with the introduction of possible anomalous Lorentz structures, and measured the sensitivity of the Higgs self coupling (λ) through double Higgs production. The studies are performed with 60 GeV electrons colliding with 7 (50) TeV protons for the LHeC (FCC-he). For the single top studies a parton level study has been performed, and we find the sensitivity of the anomalous coupling at a 95% C.L, considering 10-1% systematic errors. The double Higgs production has been studied with speculated detector parameters and the sensitivity of λ estimated via the cross section study around the Standard Model Higgs self coupling strength (λSM) considering 5% systematic error in signal and backgrounds. Effects of non-standard CP-even and CP-odd couplings for hhh, hWW and hhWW vertices have been studied and constrained at 95% C.L.