Masses and decay constants of the η and η′ mesons from lattice QCD

Masses and decay constants of the η and η′ mesons from lattice QCD

Abstract We determine the masses, the singlet and octet decay constants as well as the anomalous matrix elements of the η and η′ mesons in N f = 2 + 1 QCD. The results are obtained using twenty-one CLS ensembles of non-perturbatively improved Wilson fermions that span four lattice spacings ranging f...

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Bibliographic Details
Main Authors: The RQCD collaboration, Gunnar S. Bali, Vladimir Braun, Sara Collins, Andreas Schäfer, Jakob Simeth
Format: Article
Language:English
Published: SpringerOpen 2021-08-01
Series:Journal of High Energy Physics
Subjects:
Lattice QCD
Chiral Lagrangians
1/N Expansion
Anomalies in Field and String Theories
Online Access:https://doi.org/10.1007/JHEP08(2021)137

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