134 citations · 846 across the 56 of their papers we have counts for
33 papers · 1 filter
Chiral Soliton Models and Nucleon Structure Functions
Herbert Weigel, Ishmael Takyi
We outline and review the computations of polarized and unpolarized nucleon structure functions within the bosonized Nambu-Jona-Lasinio chiral soliton model. We focus on a consiste…
Exotic Baryons in Chiral Soliton Models
H. Weigel
We cautiously review the treatment of pentaquark exotic baryons in chiral soliton models. We consider two examples and argue that any consistent and self-contained description must…
Heavy Baryons with Strangeness in a Soliton Model
J. P. Blanckenberg, H. Weigel
We present results from a chiral soliton model calculation for the spectrum of baryons with a single heavy quark (charm or bottom) and non-zero strangeness. We treat the strange co…
On the width of collective excitations in chiral soliton models
H. Weigel
In chiral soliton models for baryons the computation of hadronic decay widths of baryon resonances is a long standing problem. For the three flavor Skyrme model I present a solutio…
Axial current matrix elements and pentaquark decay widths in chiral soliton models
H. Weigel
Here I explain why in chiral soliton models the hadronic transition operator of the pentaquark decay cannot be identified from the axial current.
Collective Resonances in the Soliton Model Approach to Meson--Baryon Scattering
H Weigel
The proper description of hadronic decays of baryon resonances has been a long standing problem in soliton models for baryons. In this talk I present a solution to this problem in…
Reply to Cohen's comment on the rotation--vibration coupling in chiral soliton models
H. Walliser, H. Weigel
In this short note we summarize the main results of our paper [hep-ph/0510055] and reply to a recent comment [hep-ph/0511174] on that paper.
Soliton Picture for Pentaquarks
H. Weigel
In this talk I report on a thorough comparison between the bound state and rigid rotator approaches to generate baryon states with non--zero strangeness in chiral soliton models. T…
Bound State versus Collective Coordinate Approaches in Chiral Soliton Models and the Width of the Pentaquark
H. Walliser, H. Weigel
We thoroughly compare the bound state and rigid rotator approaches to three--flavored chiral solitons. We establish that these two approaches yield identical results for the baryon…
Exotic Baryons and Monopole Excitations in a Chiral Soliton Model
H. Weigel
We compute the spectra of exotic pentaquarks and monopole excitations of the low--lying and baryons in a chiral soliton model. Once the low--lying baryon proper…
Magnetic Moments of Baryons with a Single Heavy Quark
S. Scholl, H. Weigel
We calculate the magnetic moments of heavy baryons with a single heavy quark in the bound-state approach. In this approach the heavy baryons is considered as a heavy meson bound in…
Magnetic Moments of Baryons with a Heavy Quark
H. Weigel, S. Scholl
We compute magnetic moments of baryons with a heavy quark in the bound state approach for heavy baryons. In this approach the heavy baryon is considered as a heavy meson bound to a…
A Bethe--Salpeter Description of Light Mesons
H. Weigel, R. Alkofer, P. Watson
We present a covariant approach to describe the low--lying scalar, pseudoscalar, vector and axialvector mesons as quark--antiquark bound states.This approach is based on an effecti…
The Spin of the Nucleon in Effective Models
Herbert Weigel
The three flavor soliton approach for baryons is utilized to discuss effects of flavor symmetry breaking in the baryon wave--functions on axial current matrix elements. The flavor…
Soliton Models for the Nucleon and Predictions for the Nucleon Spin Structure
Herbert Weigel
In these lectures the three flavor soliton approach for baryons is reviewed. Effects of flavor symmetry breaking in the baryon wave--functions on axial current matrix elements are…
Strongly Distorted Baryon Wave-Functions: Hyperon Beta-Decay and the Spin of the Lambda and the Nucleon
H. Weigel
Within the collective coordinate approach to chiral soliton models we suggest that breaking of SU(3) flavor symmetry mainly resides in the baryon wave-functions while the charge op…
Radial Excitations of low-lying Baryons and the Structure of the Z^+ Penta-QuarK
Herbert Weigel
Within the collective quantization scheme for chiral solitons we discuss states in higher dimensional representations of flavor SU(3) and their relation to radially excited states…
Hyperon Beta-Decay and Axial Charges of the Lambda in view of Strongly Distorted Baryon Wave-Functions
H. Weigel
Within the collective coordinate approach to chiral soliton models we suggest that breaking of SU(3) flavor symmetry mainly resides in the baryon wave-functions while the charge op…
Hadron Structure Functions in a Chiral Quark Model
Leonard Gamberg, Herbert Weigel
We present a consistent regularization procedure for calculating hadron structure functions in a bosonized chiral quark model. We find that the Pauli-Villars regularization scheme…
The Skyrme Model for Baryons
J. Schechter, H. Weigel
We review the Skyrme model approach which treats baryons as solitons of an effective meson theory. We start out with a historical introduction and a concise discussion of the origi…
Hadron Structure Functions in a Chiral Quark Model: Regularization, Scaling and Sum Rules
H. Weigel, E. Ruiz Arriola, L. Gamberg
We provide a consistent regularization procedure for calculating hadron structure functions in a chiral quark model. The structure functions are extracted from the absorptive part…
Nucleon Structure Functions in a Chiral Soliton Model
Herbert Weigel
The computation of nucleon structure functions within the Nambu-Jona-Lasinio chiral soliton model is outlined. After some technical remarks on the issue of regularization numerical…
Hyperons as collective excitations of chiral solitons
Herbert Weigel
According to the large limit of QCD baryons are considered as soliton solutions in effective mesons theories. While the classical solitons dwell in the isospin subgroup of fl…
Generalization of the Bound State Model
Masayasu Harada, Francesco Sannino, Joseph Schechter +1
In the bound state approach the heavy baryons are constructed by binding, with any orbital angular momentum, the heavy meson multiplet to the nucleon considered as a soliton in an…