barionic

Barionic is a term used in particle physics to describe particles that are composed of quarks. Specifically, baryons are a type of subatomic particle that consists of three quarks. Protons and neutrons, the building blocks of atomic nuclei, are the most well-known examples of baryons. Quarks are fundamental particles that are believed to be elementary, meaning they are not composed of smaller particles. They are classified into six types, or "flavors": up, down, charm, strange, top, and bottom.

Baryons are a subset of hadrons, which are particles made of quarks and held together by the strong nuclear force. Hadrons are further divided into baryons (three quarks) and mesons (a quark and an antiquark). The term "barionic" can also refer to matter composed primarily of baryons, as opposed to other forms of matter such as leptonic matter (composed of leptons like electrons and neutrinos) or dark matter.

The study of barionic matter is crucial for understanding the structure of the universe. Baryonic acoustic oscillations, for example, are ripples in the density of barionic matter in the early universe that left an imprint on the distribution of galaxies we observe today. This imprint serves as a standard ruler for measuring cosmological distances. The relative abundance of barionic matter compared to dark matter and dark energy is a key parameter in the standard model of cosmology.