6533b861fe1ef96bd12c4a71

RESEARCH PRODUCT

$\eta$-$\eta'$ mixing in large-$N_c$ chiral perturbation theory: discussion, phenomenology, and prospects

Patricia BickertPere MasjuanStefan Scherer

subject

High Energy Physics - PhenomenologyHigh Energy Physics - LatticeNuclear TheoryHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyHigh Energy Physics::Experiment

description

A systematic study of the $\eta$-$\eta'$ 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.

yearjournalcountryeditionlanguage
2015-11-06
http://arxiv.org/abs/1511.01996