Other experiments have found evidence of CP symmetry violations in more exotic types of particles, such
as kaons or B mesons, but they aren't enough by themselves to explain the dominance of matter over antimatter.
While quarks can also pair up to form particles such
as kaons and pions, no particle had ever been found to contain more than three quarks.
Specifically, they looked for a telltale distribution of «daughter» particles, including other baryons as well
as kaons and pions — exotic particles produced by the decay of short - lived Xi - cc + + particles.
This is the case for the decay of a positively charged particle known
as a kaon into another positively charged particle called...
Not exact matches
That will allow the team to distinguish between particles known
as pions, made of up and down quarks, and
kaons, made of a strange quark with an up or down quark.