FCC-he sensitivity estimates on the anomalous electromagnetic dipole moments of the top-quark

Abstract

In this paper, we study the production of a top-quark in association with a bottom-quark and a electron-neutrino at the Future Circular Collider Hadron Electron (FCC-he) to probe the sensitivity on its magnetic moment $({\hat{a}}_V)$ and its electromagnetic dipole moment $({\hat{a}}_A)$ through the process $e^{-}p\to e^{-}\gamma p\to \bar{t}{\nu }_{e}bp$. Assuming a large amount of collisions, as well as of data with cleaner environments, the FCC-he is an excellent option to study new physics, such as the ${\hat{a}}_V$ and ${\hat{a}}_A$. For our sensitivity study on ${\hat{a}}_V$ and ${\hat{a}}_A$, we consider center-of-mass energies $\sqrt{s}=7.07,10TeV$ and luminosities $\mathcal{L}=50,100,300,500,1000f{b}^{-1}$. In addition, we apply systematic uncertainties ${\delta }_{sys}=0\%,3\%,5\%$ and we consider unpolarized and polarized electron beam. Our results show that the FCC-he is a very good perspective to probe the ${\hat{a}}_V$ and ${\hat{a}}_A$ at high-energy and high-luminosity frontier.

Comments: 19 pages, 14 Figures, 6 Tables; v2: version published in NPB. arXiv admin note: text overlap with arXiv:1811.10462