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Joined: Oct 2004
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D
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Finally progress in particle physics ... it has been a very long time.

Scientists of the CDF collaboration at the Department of Energy's Fermi National Accelerator Laboratory announced today (October 23, 2006) the discovery of two rare types of particles, exotic relatives of the much more common proton and neutron.

"These particles, named Sigma-sub-b [Σb], are like rare jewels that we mined out of our data," said Jacobo Konigsberg, University of Florida, a spokesperson for the CDF collaboration. "Piece by piece, we are developing a better picture of how matter is built out of quarks. We learn more about the subatomic forces that hold quarks together and tear them apart. Our discovery helps complete the 'periodic table of baryons.'"

Baryons (derived from the Greek word "barys", meaning "heavy") are particles that contain three quarks, the most fundamental building blocks of matter. The CDF collaboration discovered two types of Sigma-sub-b particles, each one about six times heavier than a proton.

For the rest of the story:
http://www.sciencedaily.com/releases/2006/10/061023192702.htm


DA Morgan
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Thanks DA, re: CDF - Collider Detector at Fermilab

At first I thought they were talking about super-symmetric (SUSY) partners, but they?re just still filling in the fundamental grid of Standard Model particles. It?s wonderful to see the results from Tevatron (whose planning, building, upgrades and operation I?ve followed for years). Though I haven?t followed much in the past couple of years, it?s nice to see CDF Phase II paying off.
Found a couple of neat links if you like this kind of stuff (exotics and new physics).

~samwik

http://www-cdf.fnal.gov/physics/exotic/exotic.html

http://www-cdf.fnal.gov/physics/exotic/conference/conference.html


Pyrolysis creates reduced carbon! ...Time for the next step in our evolutionary symbiosis with fire.

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