Transverse Polarization for Energy Calibration at the Z peak

TL;DR

This paper explores using transverse polarization in circular colliders like FCC-ee and CEPC for precise energy calibration at the Z peak and WW threshold, discussing methods to reduce polarization time and minimize energy uncertainty.

Contribution

It presents a detailed analysis of transverse polarization techniques for energy calibration and strategies to improve measurement accuracy in future circular colliders.

Findings

Transverse polarization can be used for accurate energy calibration at the Z peak.

Wigglers can significantly reduce polarization times.

Strategies to minimize energy uncertainty errors are proposed.

Abstract

In this paper we deal with aspects of transverse polarization for the purpose of energy calibration of proposed circular colliders like the FCC-ee and the CEPC. The main issues of such a measurement will be discussed. The possibility of using this method to accurately determine the energy at the WW threshold as well as the Z peak will be addressed. The use of wigglers for reducing long polarization times will be discussed and a possible strategy will be presented for minimising the energy uncertainty error in these large machines.