Benjamín Grinstein

Portrait of Benjamín Grinstein


UC San Diego


Short CV


  • 1980 M.S. in Physics,  Centro de Investigación y Estudios Avanzados, Mexico.
  • 1984 Ph.D. in Physics, Harvard University, United States.


  • 1984 - 1987 Junior Research Associate, California Institute of Technology.
  • 1987 - 1988 Postdoctoral Fellow, Lawrence Berkeley Laboratories.
  • 1988 - 1989 Associate Scientist, Fermi National Laboratory.
  • 1989 - 1991 Assistant Professor, Harvard University.
  • 1991 - 1992 Associate Professor, Harvard University.
  • 1991 - 1994 Senior Scientist, Superconducting Super Collider.
  • 1994 - present Professor, University of California, San Diego.

Honours and prizes

  • 1981 Whiting Fellow, Harvard.
  • 1983 Merit Fellow, Harvard.
  • 1984 Tolman Fellow, California Institute of Technology.
  • 1989 Milton Fund Award, Harvard.
  • 1990 Sloan Foundation Fellow.
  • 1991 Tozier Fund Award, Harvard.
  • 1991 Clark Fund Award, Harvard.
  • 1998 Fellow, American Physical Society.
  • 2003 Medal, Mexican Physical Society, Division of Particles and Fields .
  • 2008 Outstanding Referee, American Physical Society.
  • 2013 Fellow, American Association for the Advancement of Science.
  • 2014 Outstanding Referee, Physics Letters B.

Research Interests

Ever since the muon was discovered physicists have wondered why it exists. Are there mathematics that require its existence for consistency? Are electrons and muons made of more fundamental stuff, with the muon being an excited version of the electron? We now know that each of the basic constituents of stable matter (the up  and down quarks, the electron and its  ghostly neutrino) is accompanied by  two heavier, unstable versions. Flavor Physics aims at determining  the properties of these particles with high precision, hoping to uncover some rationale for their very existence.