Areas of Research/Interest: Theoretical particle physics, electroweak physics, quantum field theory.

External Affiliations: Convener, Division of Particles and Fields (DPF) Long-Range Planning Study for Physics, 1994; Association of Members of the Institute of Advanced Study (AMIAS), Princeton, NJ; Selection Committee for the Apker Award (APS) for the best undergraduate research project in the United States, 1991-1994; Committee of Selection, Guggenheim Foundation, 1986-present; Advisory Council of the World Laboratory Center for Pan-American Collaboration in Science and Technology.

Fellowships/Honors: Fellow, American Physical Society; Guggenheim Foundation Fellow, 1983; Alexander von Humboldt Research Award, 1997.

Selected Works:
Relations between the on-shell and MS frameworks and the Mw-Mz interdependence. Nuclear Physics B., 351. 1991. 40.

Radiative corrections in the SU(2)L x U (1) theory: A simple renormalization framework. Physical Review D., 22. 1980. 971.

Current algebra formulation of radiative corrections in gauge theories and the universality of the weak interactions. Reviews of Modern Physics. 50. 1978. 573.

Precise calculation of the W mass and the effective electroweak mixing angle, with Degrassi, G. and Gambino, P. Physics Letters B., 394. 1997. 188.