< Back to Contents
Decays may reflect matter-antimatter rift
New evidence that elementary particles called B mesons behave slightly differently than their antiparticles may shed light on why the universe has so little antimatter.
References:
1993. More B mesons for Cornell. Science News 144(Nov. 13):319.
Abe, F., et al. Measurement of the CP-violation parameter sin (2b) in B d0/B d0-bar®J/yKS0 decays. Physical Review Letters 81(Dec. 21):5513.
Butler, S. 1999. First sign of CP violation in B meson decays. Ferminews (Feb. 5):2.
Peterson, I. 1993. Particle physics: Stanford wins a B factory. Science News 144(Oct. 16):245.
Quinn, H.R. and M.S. Witherell. 1998. The asymmetry between matter and antimatter. Scientific American 279(October):76.
Sources:
Karl Berkelman
Cornell University
Newman Lab
Ithaca, NY 14853
Joel Heinrich
University of Pennsylvania
Department of Physics and Astronomy
209 South 33rd Street
Philadelphia, PA 19104-6396
Nigel S. Lockyer
University of Pennsylvania
Department of Physics and Astronomy
209 South 33rd Street
Philadelphia, PA 19104-6396
Kevin T. Pitts
Fermilab
Post Office Box 500
Batavia, IL 60510-0500
Michael Witherell
University of California, Santa Barbara
Physics Department
Santa Barbara, CA 93106-9530
From Science News, Vol. 155, No. 8, February 20, 1999, p. 118. Copyright © 1999, Science Service.
