|15th Anniversary||Blog||Archive||QR Code||RSS||Archive||Tag Cloud||Videos||XML|
Val L. Fitch, the CP Violation, and Antimatter
Val Fitch, along with James Cronin, used Brookhaven National Laboratory's Alternating Gradient Synchrotron (AGS) 'to verify a fundamental tenet of physics, known as CP [charge-parity] symmetry, by showing that two different particles did not decay into the same products. They picked as their example neutral K mesons, which are routinely produced in collisions between a proton beam and a stationary metal target. '1
Cronin received the Ernest Orlando Lawrence Award in 1976 for major experimental contributions to particle physics including fundamental work on weak interactions culminating in the discovery of asymmetry under time reversal.
What they found was that, 'occasionally, the long-lived neutral K meson does decay into two pi mesons. Cronin and Fitch had found an example of CP violation.
The discovery's ramifications stretched far beyond the neutral K mesons; Cronin and Fitch had discovered a flaw in physics' central belief that the universe is symmetrical.
Val Fitch was actively involved with the Board of Trustees of Associated Universities, Inc., which managed Brookhaven Lab for the U.S. Department of Energy from 1947 to 1997. From 1961-1967, and 1988-1991, he was a trustee; from 1991-1993, he served as Chairman of the Board; and in 1993, he returned to the Board as a member.'1
Additional information about Val Logsdon Fitch, charge-parity (CP) violation, and antimatter is available in electronic documents and on the Web.
Some Notes on Wideband Feedback Amplifiers, DOE Technical Report, March 1949
A High Resolution Scale-of-four, DOE Technical Report, August 1949
CP Violation, Neutral Currents, and Weak Equivalence, DOE Technical Report, March 1972
Results on the Performance of a Broad Band Focusing Cherenkov Counter, DOE Technical Report, 1980
Val Logsdon Fitch: Basic research in 1964 by Nobel Prize-winning physicist may advance humankind's understanding of the universe, Nebraska State Education Association (NSEA)
Interview with Val Fitch, nobelprize.org (video)Physicists Reveal Findings that Help Explain Why Matter Exists, Princeton University
Some links on this page may take you to non-federal websites. Their policies may differ from this site.