157 citations · 288 across the 14 of their papers we have counts for
9 papers · 1 filter
QCD Sum Rules and the Pi(1300) Resonance
T. G. Steele, J. C. Breckenridge, M. Benmerrouche +2
Global fits to the shape of the first QCD Laplace sum rule exhibiting sensitivity to pion-resonance [] parameters are performed, leading to predictions for the pion-resona…
QCD Laplace Sum Rules and the Resonance
T. G. Steele, J. C. Breckenridge, M. Benmerrouche +2
A global fit to the shape of the first QCD Laplace sum rule exhibiting sensitivity to pion-resonance [] parameters is performed, leading to predictions for the pion-resona…
Lower Bound on the Pion Polarizability from QCD Sum Rules
M. Benmerrouche, G. Orlandini, T. G. Steele
Making use of QCD sum rules a lower bound is found which relates the electromagnetic polarizability and mean-square radius of charged pions through…
Extraction of the Ratio of the N^*(1535) Electromagnetic Helicity Amplitudes from Eta Photoproduction off Neutrons and Protons
Nimai C. Mukhopadhyay, J. -F. Zhang, M. Benmerrouche
Using the recent precise measurements of eta photopro- duction in proton and deuteron targets, we extract the ratio of the helicity amplitudes A^n_1/2 / A^p_1/2, for the excitation…
Photoproduction of the Etas near Threshold
Nimai C. Mukhopadhyay, J. -F. Zhang, M. Benmerrouche
We extract a parameter , a characteristic product of the strong and electromagnetic amplitudes for the N^*(1535), to be (2.20+-0.15) in unit of 10^(-4)MeV^(-1) from the new data…
Photo- and electroproduction of the eta and eta-prime mesons
Nimai C. Mukhopadhyay, J. -F. Zhang, M. Benmerrouche
We discuss the eta and eta prime photo- and electroproduction as a way to probe the nucleon resonance structure.
Constraints on QCD Sum-rules from the Hölder Inequalities
M. Benmerrouche, G. Orlandini, T. G. Steele
A new technique based on Hölder's integral inequality is applied to QCD sum-rules to provide fundamental constraints on the sum-rule parameters. These constraints must be satisfied…
Photoproduction of the Eta-Prime Mesons as a New Tool to Probe Baryon Resonances
J. -F. Zhang, Nimai C. Mukhopadhyay, M. Benmerrouche
We examine eta prime photoproduction, as a novel tool to study baryon resonances around 2 GeV, of particular interest to the quark shell model, which predicts a number of them. We…
Effective Lagrangian Approach to the Theory of Eta Photoproduction in the Region
M. Benmerrouche, N. C. Mukhopadhyay, J. F. Zhang
We investigate eta photoproduction in the resonance region within the effective Lagrangian approach (ELA), wherein leading contributions to the amplitude at the tree…