 Helen Quinn

Helen Rhoda Arnold Quinn (born 19 May 1943) is an Australian-born particle physicist and educator who has made major contributions to both fields.Her contributions to theoretical physics include the Peccei–Quinn theory which implies a corresponding symmetry of nature (related to matter-antimatter symmetry and the possible source of the dark matter that pervades the universe) and contributions to the search for a unified theory for the three types of particle interactions (strong, electromagnetic, and weak).