$η$-$η'$ mixing in large-$N_c$ chiral perturbation theory: discussion, phenomenology, and prospects
Year: 2015
Type: preprint
Abstract: A systematic study of the $η$-$η'$ mixing in Large-$N_c$ chiral perturbation theory is presented with special emphasis on the role of the next-to-next-to-leading-order contributions in the combined momentum, quark-mass, and $1/N_c$ expansions. At this order, loop corrections as well as OZI-rule-violating pieces need to be included. Mixing angles as well as pseudoscalar decay constants are discussed within this framework. The results are compared with recent phenomenological approaches.
Source: arXiv (Cornell University)
Institution: Johannes Gutenberg University Mainz
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2223409592