University Endowed Professor of Physics M.S., Instituto Balseiro, Bariloche, Argentina Ph.D., University of Munich, Munich, Germany (1985) Room 102 Olin Engineering Building Phone: 757.727.5827 Fax: 757.269.7002 Email: goity@jlab.org

Research Interests:

I am an experimental nuclear physicist with a joint position both as faculty at HU and as staff scientist at the Thomas Jefferson National Accelerator Facility (Jefferson Lab) - which is about 10 minutes from
campus. I also have an interest in medical applications of nuclear physics, and currently serve as Director of the HU Center for Advanced Medical Instrumentation, and the HU joint medical physics prog

Theory of strong interactions: my main interest is to make progress in understanding the non-perturbative side of QCD. The main focus is in the development and applications of effective theories: chiral perturbation theory, heavy quark effective theory, and 1/Nc expansion of QCD. Particular topics of current work:  i) analyses of excited baryons in the 1/Nc expansion: masses, strong and electromagnetic transitions; ii) meson sector chiral perturbation theory including resonances in the 1/Nc expansion; iii)  isospin breaking and precision tests: p0®gg, heavy mesons masses, etc.

Selected Publications:

•  J.L. Goity and N.N. Scoccola. “Photo-production of Positive Parity Excited Baryons in the 1/Nc Expansion of QCD”. Phys. Rev. Lett. 99, 062002 (2007).
• J.L. Goity  and  N. Matagne, “Baryon Regge Trajectories in the Light of the 1/Nc Expansion”. Phys. Lett. B655, 223 (2007).
• J.L. Goity and Ch.P. Jayalath. “Strong and Electromagnetic Mass Splittings in Heavy Mesons”. Phys. Lett. B650, 22 (2007).
• J.L. Goity. “1 / Nc countings in baryons”. Phys. Atom. Nucl. 68, 624 (2005)
• J.L. Goity, A.M. Bernstein and B.R. Holstein. “The Decay p0®g to next to leading order in chiral perturbation theory”. Phys. Rev. D66, 076014 (2002).
• C.L. Schat, J.L. Goity and  N.N. Scoccola. “Masses of the 70- baryons in large Nc QCD”. Phys. Rev. Lett. 88,102002 (2002).
• J.L. Goity, D. Lehmann, G. Prezeau and J. Saez. “Regularization for effective field theory with two heavy particles”. Phys. Lett. B504, 21 (2001).
• J.L. Goity, R. Lewis, M. Schvellinger and Long-Zhe Zhang. “The Goldberger-Treiman discrepancy in SU(3)”. Phys. Lett. B454, 115 (1999).
• C.E. Carlson, Ch.D. Carone, J.L. Goity and R.F. Lebed. “Operator analysis of l = 1 baryon masses in large Nc QCD”. Phys. Rev. D59, 114008 (1999).
• J.L. Goity and W. Roberts. “A Relativistic chiral quark model for pseudoscalar emission from heavy mesons”. Phys. Rev. D60, 034001 (1999).