In particle physics, preons are hypothetical point particles, conceived of as sub-components of quarks and leptons. [1] . The word was coined by Jogesh Pati and Abdus Salam, in 1974.

A preon star is a proposed type of compact star made of preons, a group of hypothetical subatomic particles. Preon stars would be expected to have huge densities, exceeding 10 23 kg/m 3. They may have greater densities than quark stars, and they would be heavier but smaller than white dwarfs and neutron stars. [6]

May 21, 2013 · Many hypothetical building blocks for quarks and leptons have emerged, each with a different name, but the term “preon” has stuck as a generic descriptor for all of them.

May 28, 2024 · Preon models represent a fascinating frontier in particle physics, suggesting a deeper layer of structure within the subatomic world. While they offer potential solutions to some of the Standard Model’s shortcomings, their true test lies in experimental validation.

The Harari–Shupe preon model (also known as rishon model, RM) is the earliest effort to develop a preon model to explain the phenomena appearing in the Standard Model (SM) of particle physics. [1]

May 26, 2005 · The preon is regarded as a topological object with three degrees of freedom in a dual (3+1)-dimensional manifold. It is shown that dualism of this manifold gives rise to a set of preon structures, which resemble three families of fermions.

The PreON is a fully automated, user-friendly benchtop instrument designed for mid-throughput proteomics workflows. With the ability to process up to 16 labeled or 12 unlabeled samples per run, including support for advanced 18-plex TMT labeling, it ensures efficiency and reproducibility.

Aug 15, 2021 · While in the standard model of particle physics all hadrons and mesons are bound states of quarks, the quarks themselves, together with the leptons, are assumed to be “elementary” particles, hence not themselves bound states of other particles.

Aug 27, 2009 · Preons are hypothetic constituents of the standard particles. They were initially assumed to have basically similar properties to those of conventional matter.

The A-B-C Preon Model Video Presentation The following videos present Dr. Larson's ABC preon model: Introduction & History Prior to the Standard Model (8.5 minutes) History of the Standard Model (12.5 minutes) Modeling Leptons in the ABC Preon Model (9.5 minutes) Modeling Hadrons in the ABC Preon Model (10 minutes)