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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…
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…
Investigation of a0-f0 mixing
Christoph Hanhart, Bastian Kubis, Jose 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…
Reconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state
C. Hanhart, Yu. S. Kalashnikova, A. E. Kudryavtsev +1
We investigate the enhancement in the D^0\bar{D}^0π^0 final state with the mass M=3875.2\pm 0.7^{+0.3}_{-1.6}\pm 0.8 MeV found recently by the Belle Collaboration in the B\to K D^0…
Two-photon decays of hadronic molecules
C. Hanhart, Yu. S. Kalashnikova, A. E. Kudryavtsev +1
In many calculations of the two--photon decay of hadronic molecules, the decay matrix element is estimated using the wave function at the origin prescription, in analogy to the two…