Forward tracking at the next e+ e- collider part I: the physics case

TL;DR

This paper discusses the importance of forward tracking detectors in future electron-positron colliders, emphasizing their role in enhancing physics measurements, especially for electron reconstruction at small angles.

Contribution

It analyzes the physics potential of forward tracking regions, highlighting their significance for improving experimental outcomes at future colliders.

Findings

Forward detectors can significantly boost physics output.

Excellent electron reconstruction at small angles is crucial.

Forward tracking enhances sensitivity to key physics processes.

Abstract

In a series of notes we explore the detector requirements of the forward tracking region for a future $ e^+ e^- $ collider with a center-of-mass energy in the range from 500 GeV to 3 TeV. In this first part we investigate the relevance of the forward region for a range of physics processes that are likely to be relevant in such a machine. We find that many examples can be found where excellent performance of the forward detector system may lead to a considerable increase of the physics output of the experiment. A particularly clear physics case can be made for the reconstruction of electrons at small polar angle.