The QCD topological charge and its thermal dependence: the role of the η′

The QCD topological charge and its thermal dependence: the role of the η′

Abstract We analyze the contribution of the η′ (958) meson in the first two non-trivial moments of the QCD topological charge distribution, namely, the topological susceptibility and the fourth-order cumulant of the vacuum energy density. We perform our study within U(3) Chiral Perturbation Theory u...

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Bibliographic Details
Main Authors: A. Gómez Nicola, J. Ruiz de Elvira, A. Vioque-Rodríguez
Format: Article
Language:English
Published: SpringerOpen 2019-11-01
Series:Journal of High Energy Physics
Subjects:
Chiral Lagrangians
1/N Expansion
Anomalies in Field and String Theories
Phase Diagram of QCD
Online Access:http://link.springer.com/article/10.1007/JHEP11(2019)086

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