Analysis of the top-quark charged-current coupling at the LHeC

Understand

In the context of $SU(2)_L\times U(1)$ dimension six operators we study the potential of the LHeC to provide information on top quark effective interactions.

• We focus on single antitop production and how it is affected not only by the effective $tbW$ coupling but also by four-fermion operators.
• Compared to the LHC, the LHeC provides a cleaner environment to make a precise measurement of the top quark production cross section.
• Therefore, this machine would give a much better assesment of $V_{tb}$ in the context of the SM or $V_L$ in the context of higher dimension operators.