Single production of excited spin-3/2 neutrinos at linear colliders

TL;DR

This paper investigates the potential of future high-energy electron-positron colliders to detect excited spin-3/2 neutrinos through their production and decay channels, analyzing cross sections, decay widths, and backgrounds.

Contribution

It provides a detailed analysis of excited spin-3/2 neutrino production, decay, and detection prospects, comparing them with spin-1/2 neutrinos at linear colliders.

Findings

Calculated production cross sections and decay widths for spin-3/2 neutrinos.

Identified accessible mass and coupling limits at future colliders.

Compared signals of spin-3/2 and spin-1/2 neutrinos.

Abstract

We study the potential of future high energy e+e- colliders to probe excited neutrino signals in different channels coming from the single production process via gauge interactions. We calculate the production cross section, decay widths and branching ratios of excited spin-3/2 neutrinos according to their effective currents and we compare them with that of the spin-1/2 ones. The signals and corresponding backgrounds are examined in detail to get accessible limits on the masses and couplings of excited spin-3/2 neutrinos.