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Helen R. Quinn


Additional Information

Some Important Contributions:

First paper to discuss how the strong, weak, and electromagnetic coupling constant can merge to a single coupling constant in a grand unified theory, with Howard Georgi and Steven Weinberg.

Suggested a possible near symmetry of the universe (now known as Peccei- Quinn symmetry) to explain how strong interactions can maintain the symmetry between particles and antiparticles (CP symmetry) when weak interactions do not, with Roberto Peccei.

Showed how physics of quarks can be used to predict some properties of the physics of hadrons (which are particles made from quarks),with Enrico Poggio and Steven Weinberg. This is now known as quark-hadron duality.

Phenomenological analyses of CP violation in B meson decays in the standard model with the Kobayashi-Maskawa mass matrix.

Some Important Publications:

"Divergence Cancellations in a Simplified Weak Interaction Model," Physics Letters 39B: 229 (1972), with T. Appelquist.

"Hierarchy of Interactions in Unified Gauge Theories," Physical Review Letters 33: 451 (1974), with H. Georgi and S. Weinberg.

"Smearing Method in the Quark Model," Physical Review D13: 1958 (1976), with E. C. Poggio and S. Weinberg.

"CP Conservation in the Presence of Pseudoparticles," Physical Review Letters 38: 1440 (1977), with R. D. Peccei.
"Constraints Imposed by CP Conservation in the Presence of a Pseudoparticle," Physical Review D16: 1791 (1977), with R. D. Peccei.

"CP Violation in B Physics," Annual Review of Nuclear and Particle Science 42: 211 (1992), with Y. Nir.


Fellow, American Physical Society
Fellow, Alfred Sloan Foundation 1974-78
Fellow, American Academy of Arts and Sciences
2000 Dirac Medal with Howard Georgi and Jogesh Pati

    for pioneering contributions to the quest for a unified theory of quarks and leptons and of the strong, weak, and electromagnetic interactions.


1967-70 Postdoctoral Fellow, Deutsches Elektronen Synchrotron Hamburg, Germany
1971-72 Postdoctoral Fellow, Harvard University
1972-76 Assistant Professor, Harvard University
1976-77 Associate Professor, Harvard University
1977-78 Visiting Associate Professor, Stanford University
1978-79 Senior Postdoctoral Fellow, Stanford Linear Accelerator Center, Stanford University
1979 - Staff Scientist, Stanford Linear Accelerator Center, Stanford University
1988 - Education and Public Outreach Manager, Stanford Linear Accelerator Center, Stanford University


B.S. Stanford University 1963
M.S. Stanford University 1964
Ph.D. Stanford University 1967

Elementary and High School:
Tintern Church of England Girls Grammar School, Ringwood East, Victoria, Australia.

Began undergraduate studies at the University of Melbourne, Australia before transfering to Stanford University.

Sources and References

Helen R. Quinn, [amw1992].

Additional Information/Comments

Married Daniel Quinn in 1966.
Two children: Elizabeth Helen Quinn (1971) and James Arnold Quinn (1974).

Additional Professional Interest:

On-going education of teachers for science teaching.

President of non-profit Contemporary Physic Education Project (http://pdg.lbl.gov/cpep.html), which produces material on contemporary topics for high school and college use.

Recreation Interests:
Native plants, especially flowers and grasses; hiking and jogging.

Submitted by:

Helen R. Quinn / Martha Keyes

Original citer's name:

Nina Byers

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latest revision {4/30/97 mjw} 3/16/01 nb