Baryons, taken from the Greek word for heavy, is a term that refers to a class of subatomic particles of high mass. With the discovery of the neutron in 1932, the neutron and proton were grouped together as the baryons, in contrast to the considerably...

In 1947 physicists observed new particles associated with cosmic ray events. The observed particle-streaming from these highly energetic cosmic events came in two types--a neutral particle that decayed into positive and negative particles and another,...

In the early 1950s, physicists were confronted by two varieties of strange particles. Although produced by the strong force, these particles lived longer than expected and seemed to decay by the electromagnetic or the weak force. Japanese physicist...

In particle physics, the baryons are the family of subatomic particles which are made of three quarks. The family notably includes the proton and neutron, which make up the atomic nucleus, but many other unstable baryons exist as well. The term "baryon"...

The rotational velocity curves for clusters of galaxies cannot be explained by Newtonian gravitation using the baryonic mass nor does MOND succeed in reducing this discrepancy to acceptable differences. The dark matter hypothesis appears to offer a solution; however, non-baryonic dark matter has...

Was a fifth force felt? Physicists have divided all the motions in the universe into the domains of four kinds of force: gravity, electromagnetism, the weak subatomic force and the strong subatomic force or color force. Each of these has its source...