Collinear approach for top quark production at ep colliders

Abstract

An approximately analysis study of the collinear approach for $t\overline{t}$ production at the Future Circular Collider hadron-electron (FCC-he) and the Large Hadron electron Collider (LHeC) is performed. To study heavy quark production processes, the collinear generalized double asymptotic scaling (DAS) approach in a wide rang of $Q^2$ is used. The reduced cross sections for top quark pair production at the FCC-he (for $Q^2\ge m_t^2$) and LHeC (for $Q^2\le m_t^2$) center-of-mass energies at the high inelasticity are derived. These results may be considering for both the future collider experiments at center-of-mass energy frontier and the improvement of the phenomenological models on kinematics of low values of the Bjorken variable $x$. The evolution of the gluon density for heavy-quark production in DIS is obtained at low $x$ to include effects of heavy-quark masses. A nonlinear modification of these results shown that the nonlinear corrections, with respect to the top quark mass, are very small for $Q^2\propto m_t^2$.

References in corpus (14)

• MRST partons generated in a fixed-flavour scheme
• Heavy-quark contributions to the ratio F_L/F_2 at low x
• Dynamical parton distributions from DGLAP equations with nonlinear corrections
• Transverse momentum dependent parton densities in processes with heavy quark generations
• Heavy-flavor PDF evolution and variable-flavor number scheme uncertainties in deep-inelastic scattering
• The ratio of the beauty structure functions $R^b=F_L^b/F_2^b$ at low x
• Geometrical scaling in charm structure function ratios
• Single production of vector-like top partner decaying to $Wb$ in the leptonic channel at $ep$ colliders in the LHT model
• The color dipole model bounds with the gluon-gluon recombination correction
• Nonlinear corrections on the parameterization methods
• Differential distributions for Single Top Quark Production at the LHeC
• Importance of the heavy-quarks longitudinal structure function measurements at future circular collider energies
• Gluon evolution for the Berger-Block-Tan form of the structure function F2
• Top cross section in the LHeC and FCC-he energy range

Cited by in corpus (1)

• Heavy quark structure functions from unifying the color dipole picture and double asymptotic scaling approaches