The impact of the X17 boson on particle physics anomalies: muon anomalous magnetic moment, Lamb shift, W mass and dark charges

TL;DR

This paper explores how the hypothetical X17 boson could explain several particle physics anomalies, including the muon magnetic moment, Lamb shift, and W mass, by analyzing its potential interactions and constraints.

Contribution

It introduces a new role for the X17 boson in explaining multiple anomalies and constrains its properties using recent experimental data.

Findings

X17 boson can potentially explain muon g-2 and Lamb shift anomalies.

Constraints on kinetic mixing with Standard Model gauge bosons are derived.

The W boson mass data limits the properties of the X17 boson.

Abstract

We show that the X17 vector boson, introduced to explain the ^8 Be anomalous decay, could play a crucial role in the explanation of the muon's (electron's) anomalous magnetic moment and the muonic Lamb shift. We further constrain the possible kinetic mixing with the U(1)_Y boson of the Standard Model by using the latest available data on the W boson mass.