Introduction

Professor Ball's research interests lie in the area of theoretical high energy physics. Recent work has been an investigation of the infrared behavior of quantum chromodynamics (QCD). It has been shown that the long range behavior of this theory is very similar to that of a dual superconductor in which electric flux is confined. This description of QCD has been used to derive the effective interaction potential between heavy quarks, which for the first time allows the calculation of the masses of heavy quark bound states directly from QCD. In all of this work, extensive use is made of the computer employing both numerical and algebraic methods.

Selected Publications:

• "Dual QCD Fits to the Masses of the cc and bb systems," (with M. Baker and F. Zachariasen) Phys. Rev. D45, 910 (1992).
• "QCD Based Spin-Orbit Potential Between Heavy Quarks," (with M. Baker and F. Zachariasen), Physics Letters B283 (1992) 360.
• "Dual magnetic mass of a hot gluon plasma",(with M. Baker and F. Zachariasen) Phys. Rev. D47,2151 (1993).
• "The L² part of the Heavy Quark Potential from Dual QCD and Heavy Quark Spectroscopy", (with M. Baker and F. Zachariasen) Phys. Rev. D47,3021 (1993)
• "An Effective Quark-Antiquark Potential for the Constituent Quark Model", (with M. Baker and F. Zachariasen) Phys. Rev. D51, 1968 (1995)
• "Dual QCD and the Determination of Quarkonium Masses", in Proceedings of the Workshop on Quantum Infarared Physics, Ed. H. M. Fried and B. Mueller (World Scientific, Singapore, 1995, pp. 363-371.
• "Quarkonium Masses Determined by the Dual QCD Effective Quark-Antiquark Potential", in Proceedings of the International Conference on Quark Confinement and the Hadron Spectrum, Ed. N. Brambilla and G. M. Prosperi (World Scientific, Singapore, 1995, pp. 66-75.
• "An Effective Constituent Quark-Antiquark Lagrangian Based on the Dual Superconducting Model of Long Distance QCD", (with M. Baker and F. Zachariasen) Int. J. Mod. Phys. A, vol.11 (1996) 343.
• "High Energy Hadon-Nucleus Cross Sections and Their Extrapolation to Cosmic Ray Energies", James S. Ball and Anthony Pantziris, Phys. Rev. D, vol. 53, 1224 (1996).
• "Critical Statistical Charge for Anyonic Superconductivity", James Ball and Wei Chen, Phys. Rev. B, vol. 54, 3499 (1996).
• "Confinement: Understanding the Relation Between the Wilson Loop and Dual Theories of Long Distance Yang Mills Theory", (with M. Baker, N. Brambilla, G.M. Prosperi and F. Zachariasen) Phys. Rev. D, vol. 54, 2829 (1996).
• "Nonperturbative Evalution of a Field Correlator Appearing in the Heavy Quarkonium System", (with M. Baker, N. Brambilla and A. Vairo) Phys. Letters B, vol. 389, 577 (1996).