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Dispersion-theoretical analysis of ππ and πη rescattering effects in strong three-body decays
(2021-10-08)
Employing dispersion theory to analyse hadronic three-body decays is a classic subject. Based on the fundamental physical principles of analyticity and unitarity, dispersion relations exploit basic theorems of complex ......
A formalism for a consistent treatment of two-pion interactions in heavy meson decays
(2020-10-14)
The best-established theory of particle physics up to now is the Standard Model. The theory of strong interactions called quantum chromodynamics (QCD) is a part of it. QCD leads to a wide range of phenomena, which still ...
Quark-mass dependence of pion scattering amplitudes
(2022-07-11)
We analyze lattice-QCD data of the ππ → ππ P wave obtained at unphysical-high pion masses with the inverse-amplitude method at next-to-leading order and at next-to-next-to-leading order. We then extrapolate to the ...