Quarks and gluons and partons, oh my …

The proton consists of a complex mixture of quarks and gluons. Physicists use the word parton to describe all constituents of a proton.

Quarks and gluons are more generically called “partons.”

http://news.fnal.gov/2012/05/quarks-and-gluons-and-partons-oh-my/, by Don Lincoln.

Two for the price of one

It is possible to create both a J/ψ (“Jay Sigh”) and an Υ (“OOPS-i-lon”) simultaneously. What we learn from these events has a lot to do with the way quarks are stuck together inside the proton.

http://www.fnal.gov/pub/today/archive/archive_2015/today15-11-12.html, by Leo Bellantoni.

The shape of the jet

In order to understand the exact shape of the jet in particle events at CMS, one must understand some really complicated stuff, similar to trying to understand water under pressure.

http://www.fnal.gov/pub/today/archive/archive_2014/today14-04-25.html, by Jim Pivarski.

Embracing complexity

LHC should be able to see squarks (Supersymmetric quarks), but the final state is horribly, horribly complicated.

http://www.fnal.gov/pub/today/archive/archive_2014/today14-03-14.html, by Don Lincoln.

Seeing double in proton-antiproton collisions

DZero makes an accurate measurement of how often two pairs of partons collide at the same time.

http://www.fnal.gov/pub/today/archive/archive_2014/today14-02-06.html, by Mark Williams.

Gluon jets contain more color than quark jets

Jets that come from gluons are fatter than jets that come from quarks.

http://www.fnal.gov/pub/today/archive/archive_2014/today14-01-30.html, by Wesley Ketchum and Andy Beretvas.