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Non-Strange Meson Production with Hadronic Probes
C. Hanhart
Recent progress in the field of meson production in hadron collisions is presented. Special emphasis is put new developments in the application of effective field theory methods to…
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…
Two-Pion Production in Proton-Proton Collisions with Polarized Beam
S. Abd El-Bary, S. Abd El-Samad, R. Bilger +46
The two-pion production reaction was measured with a polarized proton beam at 750 and 800 MeV using the short version of the COSY-TOF spectrome…
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…