V particle

In particle physics, V was a generic name for heavy, unstable subatomic particles that decay into a pair of particles, thereby producing a characteristic letter V in a bubble chamber or other particle detector. Such particles were first detected in cosmic ray interactions in the atmosphere in the late 1940s [1] and were first produced using the Cosmotron particle accelerator at Brookhaven National Laboratory in the 1950s.[2] Since all such particles have now been identified and given specific names, such as K meson or Sigma baryon, this term has fallen into disuse.

V0 is still used on occasion to refer generally to neutral particles that may confuse the B-tagging algorithms in a modern particle detector.

  1. G.D.Rochester, C.C.Butler (1947). "Evidence for the Existence of New Unstable Elementary Particles". Nature 160: 855.
  2. Pais, Abraham (1986). Inward Bound. Oxford University Press. p. 21.

References


This article is issued from Wikipedia - version of the Monday, October 05, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.