Leptophilic Gauge Bosons at ILC Beam Dump Experiment

TL;DR

This paper explores the potential of the ILC beam dump experiment to detect light, long-lived leptophilic gauge bosons associated with specific U(1) symmetries, expanding the search for new physics beyond current limits.

Contribution

It demonstrates the ILC beam dump experiment's capability to probe unexplored parameter regions for leptophilic gauge bosons linked to U(1)_{e−μ}, U(1)_{e−τ}, and U(1)_{μ−τ} symmetries.

Findings

ILC beam dump can explore new parameter space for LGBs.

Different models of LGBs can be distinguished at ILC.

Potential to detect long-lived leptophilic gauge bosons.

Abstract

We study the prospects of searching for leptophilic gauge bosons (LGBs) at the beam dump experiment using $e^\pm$ beams of International $e^+e^-$ Linear Collider (ILC). We consider LGBs in association of $U(1)_{e-\mu}$, $U(1)_{e-\tau}$, and $U(1)_{\mu-\tau}$ gauge symmetries, which are assumed to be light and long-lived. Utilizing the energetic electron and positron beams of the ILC, we show that the ILC beam dump experiment can cover the parameter regions which have not been explored before. We also discuss the possibility of distinguishing various models.