Physics & Astronomy - People Directory: Faculty

Bernard Nefkens Intermediate Energy Experiment Office: 5-136 Knudsen Phone: (310) 825-4970 email	Educational Background:
	Doctor of Science, University of Nijmegen, The Netherlands, 1967 Doctorandus in Physics, University of Utrecht, The Netherlands, 1959
	Position:
	Professor of Physics. UCLA, since 1974
	Diversity:
	Guest Physicist appointments at Argonne, BNL, CERN, LBL, LANL, TRIUMF, Saclay Co-founder and co-editor of the Pion-Nucleon Newsletter. Co-founder of MENU (International Conference on Meson and Nucleon Physics) Founder and Chair of the New Crystal Ball Collaboration (12 Institutions) at BNL, 1995-2002 Co-Founder in 2002 and Co-PI of the Crystal Ball at MAMI Collaboration (16 Institutions), 2002-Present
	Research Activities:
	Most of my current experimental research is carried out with the Crystal Ball Multiphoton Spectrometer. This versatile detector is now located at the University of Mainz in the 1.5 GeV tagged photon beam. We are measuring the properties of excited states of the proton with polarized photon beams incident on polarized H and D targets. We are also engaged in research at the Jefferson Lab. We have started a new program on flavor symmetry that is geared to the cascade hyperon states. See The Crystal Ball Web Site (http://bmkn8.physics.ucla.edu/Crystalball/crystalball.html)
	Research Interest :
	The basic symmetries of C, CP, T, isospin, G-Parity, chirality, and flavor Non-perturbative QCD, quark confinement, origin of mass Production, interactions and decays of the η and η' mesons Photoproduction of light mesons Ξ physics
	Publications:
	Over 250-refereed research publications, review articles, and conference presentations, see the SLAC Spires database. Some of my favorite recent papers: “Highlights of Crystal Ball Physics” Erice Lectures (2004) “Measurements of Κ^- p –› π⁰ π⁰Λ” Phy. Rev., C69, 042202 (2004) “The Neutral Decay Modes of the η-Meson”, in Proceedings of the Workshop on Production, Interactions and Decay of the η-Meson, Uppsala, Sweden, Physics Scripta T99, 114 (2002) “Photoproduction of the Ξ Hyperons”, Proceedings of the 9th International Conference on the Structure of Baryons (Baryons 2002), World Scientific, Singapore, p. 498 (2003) “Meson-Nucleon Physics: Past, Present and Future”, in Proceedings of the 9^th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon (MENU 2001), πN Newsletter 16, 289 (2002) “Flavor Symmetry Studies” in Proceedings of the Workshop on the Physics of Excited Nucleons (NSTAR 2001), Mainz, Germany, p 427 (2001)