Don Lincoln

Don Lincoln is a Fermilab scientist.

The particles resulting from collisions of lead nuclei with protons at the LHC allow scientists to explore possible novel nuclear matter.

In their search for dark matter, CMS scientists invented new measurement variables, called razor variables, to enhance their capability to identify events containing dark matter.

Busy bees

CMS scientists look for four b‘s — bottom quarks that might point the way to Higgs boson pairs.

Looking forward

Which directions do postcollision electrons take at the Large Hadron Collider, and how often do they go one way versus another? The answer gives a way to probe electroweak theory.

CMS goes looking for unparticles and dark matter, studying events in which a Z boson was created, as well as undetected energy that would be the signal of either a dark matter particle or unparticle escaping.

Are leptons more like rocks or hornet’s nests? CMS set out to find whether leptons might have any component parts by colliding them at very high energies.

Lead bottom

The nice thing about the LHC research program is that it allows scientists to investigate many phenomena.

Bigger is better

One of the first CMS papers for publication using data recorded in 2015 was on the production rate of top quarks. This is a breathtaking achievement.

One of the interesting things about science is how easy it sometimes is to draw analogies between the familiar and the exotic as a way to make the unfamiliar seem more intuitive. Today’s article is a perfect example of that.

Why three?

There are a lot of mysteries in particle physics, but one of the most curious is called the flavor problem. Physicists use the word flavor to mean the different varieties of particles. As readers of this column will recall, there are six types of quarks: up and down, charm and strange, and top and bottom. Up and down quarks are found in ordinary matter and are called generation I. The other two generations are very similar in their properties compared…