Quarks and gluons and partons, oh my …

Categories: Physics in a Nutshell
Tags: , ,
Published on: April 11, 2017
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.

Poles and masses

Categories: CDF, Energy Frontier
Published on: June 8, 2016

Measuring the “Pole Mass” of the top quark at the Tevatron (CDF)

http://news.fnal.gov/2016/06/poles-and-masses/, by Leo Bellantoni.

Looking for signs: dijet resonances

Categories: CMS/LHC
Published on: March 25, 2016

Any sign of new particles at the much higher energy of LHC Run 2?

http://news.fnal.gov/2016/02/looking-for-signs-dijet-resonances/, by Bo Jayatilaka

Two for the price of one

Categories: DZero, Energy Frontier
Published on: November 12, 2015

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.

Crazy particles

Categories: CMS/LHC, Energy Frontier
Published on: March 12, 2015

The scientists at the LHC have looked for supersymmetric particles in some crazy ways!

http://www.fnal.gov/pub/today/archive/archive_2015/today15-02-13.html, by Don Lincoln.

Exciting the vacuum

Categories: CDF, Energy Frontier
Published on: March 11, 2015

CDF looks for vacuum-like particles, e.g., “glueballs” and other interesting particles.

http://www.fnal.gov/pub/today/archive/archive_2015/today15-02-12.html, by Mike Albrow and Andy Beretvas

The shape of the jet

Categories: CMS/LHC, Energy Frontier
Published on: May 6, 2014

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

Categories: CMS/LHC, Energy Frontier
Published on: March 26, 2014

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

Categories: DZero, Energy Frontier
Published on: February 9, 2014

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

Categories: CDF
Published on: February 4, 2014

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.

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