Polarization dependence of the $\phi$ meson mass from finite-temperature QCD sum rules
High Energy Physics - Phenomenology
2026-05-27 v1 High Energy Physics - Experiment
Abstract
We study the meson at finite temperature and finite momentum using QCD sum rules. The presence of medium breaks the Lorentz invariance, and induces distinct in-medium modifications of the transverse and longitudinal modes at finite momentum. We find that, with increasing momentum, the masses of both modes increase and a clear transverse--longitudinal splitting develops. The splitting is found to grow with temperature and to be mainly generated by the dimension-four spin-dependent thermal condensates.
Keywords
Cite
@article{arxiv.2605.27347,
title = {Polarization dependence of the $\phi$ meson mass from finite-temperature QCD sum rules},
author = {Hidefumi Matsuda and Philipp Gubler and Koichi Hattori},
journal= {arXiv preprint arXiv:2605.27347},
year = {2026}
}
Comments
15 pages, 5 figures