activity
19932026
most citedCouplings in coupled channels versus wave functions: application to the X(3872) resonance

325 citations · 6k across the 224 of their papers we have counts for

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Showing 1999Show all

6 papers · 1 filter

hep-th1999

Anomalies for Nonlocal Dirac Operators

E. Ruiz Arriola, L. L. Salcedo

The anomalies of a very general class of non local Dirac operators are computed using the -function definition of the fermionic determinant and an asymmetric version of the Wign…

hep-ph1999★ 1 cited

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…

hep-ph1999

On the Structure Functions of Mesons and Baryons in a Chiral Quark Model

E. Ruiz Arriola

This research summarizes work done by myself (Nucl.Phys.{\bf A641} (1998)461), or in collaboration with R. M. Davidson (Phys.Lett.{\bf B348}(1995)163) and H. Weigel and L. Gamberg…

hep-ph1999★ 206 cited

Bethe-Salpeter Approach for Unitarized Chiral Perturbation Theory

J. Nieves, E. Ruiz Arriola

The Bethe-Salpeter equation restores exact elastic unitarity in the channel by summing up an infinite set of chiral loops. We use this equation to show how a chiral expansion…

hep-ph1999★ 34 cited

Error estimates for pi-pi scattering threshold parameters in Chiral Perturbation Theory to two loops

J. Nieves, E. Ruiz Arriola

Using the analysis of ChPT to two loops, we perform an error analysis of the threshold and low energy parameters, based on the uncertainties for the one loop low energy parameters…

hep-ph1999★ 55 cited

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…