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Chiral Extrapolation of light resonances from Unitarized Chiral Perturbation Theory
J. R. Pelaez, C. Hanhart, G. Rios
Both scalar and vector light resonances can be generated from the unitarization of one-loop chiral perturbation theory. This amounts to using in a dispersion relation the chiral ex…
The effect of isospin violation on scalar meson production
C. Hanhart, B. Kubis, J. R. Pelaez
We investigate the isospin-violating mixing of the light scalar mesons a0(980) and f0(980) within the unitarized chiral approach. Isospin-violating effects are considered to leadin…
Progress in NN --> NNpi
V. Baru, J. Haidenbauer, C. Hanhart +3
We survey the recent developments in the reaction in effective field theory. We show that the proper construction of the production operator needs a careful separation…
Pion--deuteron scattering length in Chiral Perturbation Theory up to order χ^{3/2}
V. Baru, J. Haidenbauer, C. Hanhart +3
A complete calculation of the corrections to pion-deuteron scattering length up to order with is performed. The calculation includes the dispersive contribu…
The physical meaning of scattering matrix singularities in coupled-channel formalisms
S. Capstick, A. Svarc, L. Tiator +8
The physical meaning of bare and dressed scattering matrix singularities has been investigated. Special attention has been attributed to the role of well known invariance of scatte…
How and when can one identify hadronic molecules in the baryon spectrum
C. Hanhart
A method to identify hadronic molecules in the particle spectrum is reviewed and the conditions for its applicability discussed. Special emphasis is put on the discussion of molecu…