Up Quark

The up quark or u quark (symbol: u) is the lightest of all quarks, a type of elementary particle, and a significant constituent of matter. It, along with the down quark, forms the neutrons (one up quark, two down quarks) and protons (two up quarks, one down quark) of atomic nuclei. It is part of the first generation of matter, has an electric charge of +2/3 e and a bare mass of 2.2±0.45 MeV/c2.
Like all quarks, the up quark is an elementary fermion with spin 1/2, and experiences all four fundamental interactions: gravitation, electromagnetism, weak interactions, and strong interactions. The antiparticle of the up quark is the up antiquark (sometimes called antiup quark or simply antiup), which differs from it only in that some of its properties, such as charge have equal magnitude but opposite sign.
The Up Quark’s radius is 0.43 x 10-16 cm. It contains a String.
== Anti-Up Quark ==
The Anti-Up Quark, Up Antiquark or just Antiup is the exact same thing as an Up Quark, except the charge is negative, so the Anti-Up Quark just has a charge of -2/3 e instead of +2/3 e. When an Anti-Up quark meets an up quark, they annihilate and form a virtual photon, a particle that is incredibly short lived. Shortly after, it turns into a number of electrons and positrons.
An Up Quark decays into a Down Quark and a W+ Boson, which is short lived, and decays into a positron and an electron neutrino. Of course, the mass of the byproducts is greater than the original, so this decay only occurs when energy is supplied from an outside source eg. two protons colliding, forming a proton, neutron, a positron and an electron neutrino.
Category:Fish's pages
Category:Particle
Category:Fish’s Early Pages
Category:Redlinks
Category:Wikipedia
Category:Particles
Category:Navigable
Category:Class 0