Single production of the excited electrons at the future FCC-based lepton-hadron colliders

TL;DR

This paper investigates the potential to produce and detect excited electrons at future FCC-based lepton-hadron colliders, analyzing cross-sections, kinematic distributions, and setting mass discovery limits.

Contribution

It provides the first detailed analysis of excited electron production at FCC-based lepton-hadron colliders, including cross-section calculations and discovery mass limits.

Findings

Discovery mass limit of 22.3 TeV at 31.6 TeV collider energy.

Kinematic cuts identified for excited electron detection.

Cross-section and decay width calculations for excited electrons.

Abstract

We study composite electron production at the FCC-based three electron-proton colliders with the center-of-mass energies of $3.46$, $10$ and $31.6$ TeV. For the signal process of $ep\rightarrow e^{\star}X\rightarrow e\gamma X$ , the production cross-sections and decay widhts of the excited electrons have been calculated. The differences of some kinematical quantities of the final state particles between the signal and background have been analyzed. For this purpose, transverse momentum and pseudorapidity distributions of electron and photon have been obtained and the kinematical cuts for discovery of the excited electrons have been assigned. We have finally determined the mass limits of excited electrons for observation and discovery by applying these cuts. It is shown that the mass limit for discovery obtained from the collider with $\sqrt{s}=31.6$ TeV (called PWFA-LC$\otimes$FCC) is $22.3$ TeV for the integrated luminosity $L_{int}=10$ $fb^{-1}$.