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Any subatomic particle, like any particle in the three-dimensional space that obeys the laws of quantum mechanics, can be either a boson (with integer spin) or a fermion (with odd half-integer spin). In the Standard Model, all the elementary fermions have spin 1/2, and are divided into the quarks which carry color charge and therefore feel the ...
The ring-imaging Cherenkov, or RICH, detector is a device for identifying the type of an electrically charged subatomic particle of known momentum, that traverses a transparent refractive medium, by measurement of the presence and characteristics of the Cherenkov radiation emitted during that traversal.
On 4 July 2012, the discovery of a new particle with a mass between 125 and 127 GeV/c 2 was announced; physicists suspected that it was the Higgs boson. Since then, the particle has been shown to behave, interact, and decay in many of the ways predicted for Higgs particles by the Standard Model, as well as having even parity and zero spin, two ...
This is a timeline of subatomic particle discoveries, including all particles thus far discovered which appear to be elementary (that is, indivisible) given the best available evidence. It also includes the discovery of composite particles and antiparticles that were of particular historical importance.
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 .
A subatomic particle is a particle smaller than an atom. Subcategories. This category has the following 8 subcategories, out of 8 total. B. Bosons (5 C, 37 P) E.
Strangelet, hypothetical particle that could form matter consisting of strange quarks. R-hadron, bound particle of a quark and a supersymmetric particle. T meson, hypothetical mesons composed of a top quark and one additional subatomic particle. Examples include the theta meson, formed by a top and an anti-top.
B-tagging, the identification of bottom quarks, is the most important example. B-tagging relies on the bottom quark being the heaviest quark involved in a hadronic decay (tops are heavier, but to have a top in a decay, it is necessary to produce some heavier particle to have a subsequent decay into a top). This implies that the bottom quark has ...