Comments on `Systematics of radial and angular-momentum Regge trajectories of light non-strange $q\bar q$ states', Masjuan, Arriola and Broniowski

TL;DR

This paper critiques a previous analysis of light-quark meson trajectories, identifies data selection issues, and provides a revised average slope consistent with earlier experimental results.

Contribution

It highlights defects in the data choice of prior work and offers a corrected average slope value for light-quark radial trajectories.

Findings

Original claim's slope was affected by data defects.

Revised analysis aligns with Crystal Barrel measurements.

Provides an updated average slope value.

Abstract

Masjuan, Arriola, and Broniowski [Phys. Rev. D85, 094006 (2012)] claim that the slope of the light-quark radial trajectories is 1.35 +- 0.04 GeV^2, disagreeing with the Crystal Barrel value 1.143 +- 0.013 GeV^2. There are defects in their choice of data. When these defects are revised, results come back close to the Crystal Barrel average for the slope. A revised average value is given here.