We determine the resummed 1-loop correction to a baryonic thermal screening mass. The calculation is carried out in the framework of a dimensionally reduced effective theory, where quarks are heavy fields due to their non-zero Matsubara frequencies. The correction due to interactions is computed at O(g2) in the coupling constant. In order to solve a 3-body Schr\"odinger equation, we exploit a two-dimensional generalization of the hyperspherical harmonics method. At electroweak scale temperatures, the NLO correction represents a ∼4.6% increase of the free-theory value 3πT of the screening mass.
@article{arxiv.2405.03975,
title = {Baryonic thermal screening mass at NLO},
author = {Leonardo Giusti and M. Laine and Davide Laudicina and Michele Pepe and Pietro Rescigno},
journal= {arXiv preprint arXiv:2405.03975},
year = {2024}
}