Quark-mass dependence in $$\omega \rightarrow 3\pi $$ decays
| Autor: | Maximilian Dax, Tobias Isken, Bastian Kubis |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | European Physical Journal European Physical Journal C: Particles and Fields, Vol 78, Iss 10, Pp 1-12 (2018) |
| Popis: | We study the quark-mass dependence of $$\omega \rightarrow 3\pi $$ ω→3π decays, based on a dispersion-theoretical framework. We rely on the quark-mass-dependent scattering phase shift for the pion–pion P-wave extracted from unitarized chiral perturbation theory. The dispersive representation then takes into account the final-state rescattering among all three pions. The described formalism may be used as an extrapolation tool for lattice QCD calculations of three-pion decays, for which $$\omega \rightarrow 3\pi $$ ω→3π can serve as a paradigm case. |
| Databáze: | OpenAIRE |
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