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Encyclopedia > Strange quark
Strange Quark
Composition: Elementary particle
Family: Fermion
Group: Quark
Generation: Second
Mass: 80 - 130 MeV/c2
Electric charge: -1/3 e
Spin: ½

The strange quark is a second-generation quark with a charge of -(1/3)e and a strangeness of −1. It is the lightest of the quarks except for the up and down quarks, with a mass of somewhere between 80 and 130 MeV. The first strange particle (particle containing a strange valence quark) was discovered in 1947, with the identification of the kaon, but the strange quark itself was not identified until Gell-Mann and Zweig developed the quark model in 1964. In particle physics, an elementary particle or fundamental particle is a particle not known to have substructure; that is, it is not made up of smaller particles. ... In particle physics, fermions are particles with half-integer spin, such as protons and electrons. ... These are the six flavors of quarks and their most likely decay modes. ... In particle physics, a generation is a division of the elementary particles. ... The invariant mass or intrinsic mass or proper mass or rest mass or just mass is a measurement or calculation of the mass of an object that is the same for all frames of reference. ... An electronvolt (symbol: eV) is the amount of energy gained by a single unbound electron when it falls through an electrostatic potential difference of one volt. ... A line showing the speed of light on a scale model of Earth and the Moon The speed of light in a vacuum is an important physical constant denoted by the letter c for constant or the Latin word celeritas meaning swiftness. It is the speed of all electromagnetic radiation... The elementary charge (symbol e or sometimes q) is the electric charge carried by a single proton, or equivalently, the negative of the electric charge carried by a single electron. ... The elementary charge (symbol e or sometimes q) is the electric charge carried by a single proton, or equivalently, the negative of the electric charge carried by a single electron. ... In physics, spin refers to the angular momentum intrinsic to a body, as opposed to orbital angular momentum, which is the motion of its center of mass about an external point. ... In particle physics, a generation is a division of the elementary particles. ... These are the six flavors of quarks and their most likely decay modes. ... The elementary charge (symbol e or sometimes q) is the electric charge carried by a single proton, or equivalently, the negative of the electric charge carried by a single electron. ... In particle physics, strangeness, denoted as , is a property of particles, expressed as a quantum number for describing decay of particles in strong and electro-magnetic reactions, which occur in a short period of time. ... The up quark is a first-generation quark with a charge of +(2/3)e. ... The down quark is a first-generation quark with a charge of -(1/3)e. ... An electronvolt (symbol: eV) is the amount of energy gained by a single unbound electron when it falls through an electrostatic potential difference of one volt. ... A subatomic particle is a particle smaller than an atom: it may be elementary or composite. ... The quark model is a classification scheme for hadrons in terms of their valence quarks, ie, the quarks (and antiquarks) which give rise to the quantum numbers of the hadrons. ... In particle physics, Kaons (also called K-mesons and denoted K) are a group of four mesons distinguished by the fact that they carry a quantum number called strangeness. ... Murray Gell-Mann (born September 15, 1929 in Manhattan, New York City, USA) is an American physicist who received the 1969 Nobel Prize in physics for his work on the theory of elementary particles. ... George Zweig was originally trained as a particle physicist under Richard Feynman and later turned his attention to neurobiology. ... In physics, the quark model is a classification scheme for hadrons in terms of their valence quarks, ie, the quarks (and antiquarks) which give rise to the quantum numbers of the hadrons. ...


Hadrons containing strange valence quarks

Hadrons containing strange valence quarks include the following: In particle physics, a hadron is a subatomic particle which experiences the strong nuclear force. ...

  • Kaons are mesons containing a strange quark (or its antiparticle) and an up or down quark.
  • The η and η' flavorless mesons are linear combinations of several quark-antiquark pairs, including the strange-antistrange.
  • The φ flavorless meson is pure strange-antistrange.
  • Strange baryons are known as hyperons: the Σ and Λ have one strange quark, the Ξ two, and the Ω three.

In particle physics, Kaons (also called K-mesons and denoted K) are a group of four mesons distinguished by the fact that they carry a quantum number called strangeness. ... Mesons of spin 1 form a nonet In particle physics, a meson is a strongly interacting boson, that is, it is a hadron with integral spin. ... Corresponding to most kinds of particle, there is an associated antiparticle with the same mass and opposite charges. ... The up quark is a first-generation quark with a charge of +(2/3)e. ... The down quark is a first-generation quark with a charge of -(1/3)e. ... Flavour (or flavor) is a quantum number of elementary particles related to their weak interactions. ... In mathematics, linear combinations are a concept central to linear algebra and related fields of mathematics. ... Combinations of three u, d or s-quarks with a total spin of 3/2 form the so-called baryon decuplet. ... In particle physics, a hyperon is any subatomic particle which is a baryon (and hence a hadron and a fermion) with non-zero strangeness, but with zero charm and zero bottomness. ...

See also

 v  d  e 
Particles in physics - elementary particles
Fermions: Quarks: (Up · Down · Strange · Charm · Bottom · Top) | Leptons: (Electron · Muon · Tau · Neutrinos)
Gauge bosons: Photon | W and Z bosons | Gluons
Not yet observed: Higgs boson | Graviton | Other hypothetical particles

  Results from FactBites:
 
Strange matter - Wikipedia, the free encyclopedia (594 words)
Strange matter is composed of strange quarks bound to each other directly, in a similar manner to how neutronium is composed of neutrons; a strange star is essentially a single gigantic nucleon.
Strange matter is one candidate for the hypothetical dark matter that is a feature of several cosmological theories.
Strange matter is largely theoretical at this point, but observations by the Chandra X-ray Observatory in 2002 detected two candidate strange stars, designated RX J185635-3754 and 3C58, which had previously been thought to be neutron stars.
Quark star - Wikipedia, the free encyclopedia (332 words)
Strange matter is composed of up quarks, down quarks and strange quarks bound to each other directly, in a similar manner to how neutronium is composed of neutrons; a strange star is essentially a single gigantic nucleon.
Strange matter is one candidate for the theoretical dark matter that is a feature of several cosmological theories.
Strange stars are largely theoretical at this point, but observations released by the Chandra X-Ray Observatory on April 10, 2002 detected two candidates, designated RX J185635-3754 and 3C58, which had previously been thought to be neutron stars.
  More results at FactBites »

 
 

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