New structures in the proton-antiproton system

TL;DR

This paper investigates new structures observed in proton-antiproton production, exploring their potential relation to known resonances and threshold effects, and proposing explanations for periodic patterns in the data.

Contribution

It offers a novel analysis of recent experimental data, proposing possible links between observed structures and known particle thresholds or resonances.

Findings

Identification of a peak possibly related to $ ext{Φ}(2170)$

Analysis of threshold effects from nucleon$ar{ ext{Δ}}$ and Δ$ar{ ext{Δ}}$

Suggestion of periodicity in data explained by threshold phenomena

Abstract

In the most recent measurements of the reaction $e^+e^- \rightarrow p\bar{p}$ by the BABAR collaboration, new structures have been found with unknown origin. We examine a possible relation of the most distinct peak to the recently observed $\Phi(2170)$. Alternatively, we analyse possible explanations due to the nucleon$\,\bar{\Delta}$ and $\Delta\bar{\Delta}$ thresholds. The latter could explain a periodicity found in the data.