DISCLAIMER: This article is being kept online for historical purposes. Though accurate at last review, it is no longer being updated. The page may contain broken links or outdated information.
Tests of quantum chromodynamics
Schmelling, Michael Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
- Accelerator facilities
- Measurements of strong coupling
- Tests of symmetry
- Additional Reading
With the advent of accelerators that could probe the structure of the nucleon, it was soon found that hadrons are composed of quarks, spin-1/2 particles with fractional electric charges ± 1/3 or ±2/3 of the electron charge. In addition, there was strong evidence that quarks carry a new quantum number which can take on three distinct values. This new property was called color, because just as ordinary colors can be combined to yield white, bound states of quarks form colorless hadrons. Three quarks of different color form a baryon; a quark and an antiquark carrying color and anticolor form a meson.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information