State mixing and masses of the π<SUP>0</SUP>, η and η′ mesons from <i>n<sub>f</sub></i>=1+1+1 lattice QCD plus QED



Kordov, ZR, Horsley, R, Kamleh, W, Koumi, Z, Nakamura, Y, Perlt, H, Rakow, PEL ORCID: 0000-0003-4486-2158, Schierholz, G, Stueben, H, Young, RD
et al (show 1 more authors) (2021) State mixing and masses of the π<SUP>0</SUP>, η and η′ mesons from <i>n<sub>f</sub></i>=1+1+1 lattice QCD plus QED. PHYSICAL REVIEW D, 104 (11). 114514-.

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Abstract

We present a lattice analysis of the light pseudoscalar mesons with consideration for the mixing between the flavor-neutral states π0, η and η′. We extract the masses and flavor compositions of the pseudoscalar meson nonet in nf=1+1+1 lattice QCD+QED around an SU(3)-flavor symmetric point, and observe flavor-symmetry features of the extracted data, along with preliminary extrapolation results for the flavor compositions at the physical point. A key result of this work is the observed mass splitting between the π0 and η on our ensembles, which is found to exhibit behavior that is simply related to the corresponding flavor compositions.

Item Type: Article
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 12 May 2022 11:38
Last Modified: 15 Mar 2024 07:27
DOI: 10.1103/PhysRevD.104.114514
Open Access URL: https://journals.aps.org/prd/abstract/10.1103/Phys...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3154677