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Quark mass dependence of the pion vector form factor
Feng-Kun Guo, Christoph Hanhart, Felipe J. Llanes-Estrada +1
We examine the quark mass dependence of the pion vector form factor, particularly the curvature (mean quartic radius). We focus our study on the consequences of assuming that the c…
Mass splittings within heavy baryon isospin multiplets in chiral perturbation theory
Feng-Kun Guo, Christoph Hanhart, Ulf-G. Meißner
We calculate the mass splittings within the heavy baryon isospin multiplets Σ_{c(b)} and Ξ_{c(b)}' in chiral perturbation theory to leading one-loop order. The pattern of the mass…
Subleading contributions to the width of the D_{s0}*(2317)
Feng-Kun Guo, Christoph Hanhart, Siegfried Krewald +1
We construct the effective chiral Lagrangian involving the D--mesons and Goldstone bosons at next-to-leading order taking into account strong as well as electromagnetic interaction…
Chiral extrapolation of the sigma and rho mesons from dispersion relations and Chiral Perturbation Theory
G. Ríos, A. Gómez Nicola, C. Hanhart +1
We review our recent study of the pion mass dependence of the rho and sigma resonances, generated from one-loop SU(2) Chiral Perturbation Theory (ChPT) with the Inverse Amplitude M…
Evidence that the Y(4660) is a f_0(980)psi' bound state
Feng-Kun Guo, Christoph Hanhart, Ulf-G. Meißner
We demonstrate that the experimental information currently available for the Y(4660) is consistent with its being a f_0(980)psi' molecule. Possible experimental tests of our hypoth…