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In particle physics, an elementary particle or fundamental particle is a subatomic particle that is not composed of other particles. [1] The Standard Model presently recognizes seventeen distinct particles—twelve fermions and five bosons .
This also means it is the first elementary scalar particle discovered in nature. Elementary bosons responsible for the four fundamental forces of nature are called force particles ( gauge bosons ). The strong interaction is mediated by the gluon , the weak interaction is mediated by the W and Z bosons, electromagnetism by the photon, and ...
Interest in preon models peaked in the 1980s but has slowed, as the Standard Model of particle physics continues to describe physics mostly successfully, and no direct experimental evidence for lepton and quark compositeness has been found. Preons come in four varieties: plus, anti-plus, zero, and anti-zero.
Untuk konsensus terakhir, silakan buka situs web Particle Data Group di bawah. Română: Modelul standard al particulelor fundamentale: 12 fermioni (6 cuarcuri și 6 leptoni) la care se adaugă tot atâtea antiparticule corespondente și 12 particule de etalonare (bosoni), și anume 3 bosoni vector slabi (W + , W - și Z 0 ), 8 gluoni ...
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Particle physics or high-energy physics is the study of fundamental particles and forces that constitute matter and radiation. The field also studies combinations of elementary particles up to the scale of protons and neutrons, while the study of combination of protons and neutrons is called nuclear physics.
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] It was first developed independently by Haim Harari and by Michael A. Shupe [2] and later expanded by Harari and his then-student Nathan Seiberg. [3]
Uploaded a work by Stannered from *File:Elementary_particle_interactions.svg licensed with PD-user-en, PD-user-w with UploadWizard: 04:08, 21 April 2013: 775 × 555 (16 KB) Euan Richard: Separate leptons, since the neutrino does not interact with the photon.
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