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Encyclopedia > Hyperon

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. Particles explode from the collision point of two relativistic (100 GeV per nucleon) gold ions in the STAR detector of the Relativistic Heavy Ion Collider. ... A subatomic particle is a particle smaller than an atom: it may be elementary or composite. ... In particle physics, the baryons are a family of subatomic particles including the proton and the neutron (collectively called nucleons), as well as a number of unstable, heavier particles (called hyperons). ... In particle physics, a hadron is a subatomic particle which experiences the strong nuclear force. ... In particle physics, fermions are particles with half-integer spin. ... In particle physics, strangeness is the number of anti-strange quarks minus the number of strange quarks in a particle. ... Flavour (or flavor) is a quantum number of elementary particles related to their weak interactions. ... In Physics, Bottomness (also formerly called Beauty) quantum number is the number of bottom anti-quarks () minus the number of bottom quarks (b) that are present in a particle: Bottom quarks have a bottomness of −1 and bottom anti-quarks of +1, so the bottomness sign agrees with its...


Properties and behavior of hyperons

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A combination of three u, d or s-quarks with a total spin of 3/2 form the so-called baryon decuplet. The lower six are hyperons.

All hyperons have half-integer spin and obey Fermi-Dirac statistics — and so they are all fermions. They all interact via the strong nuclear force, making them types of hadron. They are composed of three light quarks, at least one of which is a strange quark, which makes them effectively strange baryons. Hyperons decay, directly or indirectly, into a proton or neutron and one or more mesons in 10−10 to 10−8 seconds. If they decay into a neutron, this may further decay into a proton. They are classified through the quark model. Image File history File links Download high resolution version (999x817, 86 KB) Decupleto bariônico. ... Image File history File links Download high resolution version (999x817, 86 KB) Decupleto bariônico. ... In mathematics, a half-integer is a number of the form , where is an integer. ... 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. ... Fermi-Dirac distribution as a function of ε/μ plotted for 4 different temperatures. ... In particle physics, fermions are particles with half-integer spin. ... The strong nuclear force or strong interaction (also called color force or colour force) is a fundamental force of nature which affects only quarks and antiquarks, and is mediated by gluons in a similar fashion to how the electromagnetic force is mediated by photons. ... In particle physics, a hadron is a subatomic particle which experiences the strong nuclear force. ... These are the 6 quarks and their most likely decay modes. ... For other uses of this term, see: Quark (disambiguation) 1974 discovery photograph of a possible charmed baryon, now identified as the Σc++ In particle physics, the quarks are subatomic particles thought to be elemental and indivisible. ... In particle physics, the baryons are a family of subatomic particles including the proton and the neutron (collectively called nucleons), as well as a number of unstable, heavier particles (called hyperons). ... Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ... This article or section does not cite its references or sources. ... In particle physics, a meson is a strongly interacting boson, that is, it is a hadron with integral spin. ... 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. ...


The Ω has strangeness −3, so it takes multiple flavor-changing weak decays for it to decay into a proton or neutron. One such three-step decay was observed in a cosmic ray experiment, but it was not until other Ω particles were produced and observed using particle accelerators that Murray Gell-Mann's SU(3) model (sometimes called the Eightfold Way) was considered confirmed. The weak nuclear force or weak interaction is one of the four fundamental forces of nature. ... Cosmic rays can loosely be defined as energetic particles originating outside of the Earth. ... A 1960s single stage 2 MeV linear Van de Graaff accelerator, here opened for maintenance A particle accelerator is a device that uses electric fields to propel electrically charged particles to high speeds and magnetic fields to contain them. ... 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. ... In physics, the Eightfold Way is a term coined by American physicist Murray Gell-Mann for a theory for organizing microscopical particles like quarks and hadrons. ...


Hyperon research

The first research into hyperons happened in the 1950s, and spurred physicists on to the creation of an organized classification of particles. Today, research in this area is carried out on data taken at many facilities around the world, including CERN, Fermilab, SLAC, JLAB, Brookhaven National Laboratory, KEK, and others. Physics topics include searches for CP violation, measurements of spin, studies of excited states (commonly referred to as spectroscopy), and hunts for exotic states such as pentaquarks. CERN logo The Organisation Européenne pour la Recherche Nucléaire (English: European Organization for Nuclear Research), commonly known as CERN, pronounced (or in French), is the worlds largest particle physics laboratory, situated just west of Geneva on the border between France and Switzerland. ... Fermilabs Tevatron Robert Rathbun Wilson Hall Fermi National Accelerator Laboratory (Fermilab), located in Batavia near Chicago, Illinois, (Google Sat Map) is a U.S. Department of Energy national laboratory specializing in high-energy particle physics, operated for the Department of Energy by the Universities Research Association (URA). ... The Stanford Linear Accelerator Center (SLAC) is a U.S. national laboratory operated by Stanford University for the U.S. Department of Energy. ... Thomas Jefferson National Accelerator Facility (TJNAF), commonly called Jefferson Lab (JLAB), is a U.S. national laboratory operated as of 1 June 2006 by Jefferson Science Associates, LLC, a joint venture between Southeastern Universities Research Association, Inc. ... Aerial view of Brookhaven National Laboratory. ... It is proposed that this article be deleted, because of the following concern: Non-notable internet slang. ... In physics, and specifically particle physics, CP violation is a violation of the postulated CP symmetry of the laws of physics. ... 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. ... It has been suggested that this article or section be merged with quantum state. ... A pentaquark is a subatomic particle consisting of a group of five quarks (compared to three quarks in normal baryons and two in mesons), or more specifically four quarks and one anti-quark. ...


See also


A Hypernucleus is a nucleus which contains at least one hyperon in addition to nucleons. ... This is a list of particles in particle physics, including currently known and hypothetical elementary particles, as well as the composite particles that can be built up from them. ...

Particles in physics - composite particles
Hadrons: Baryons (list) | Mesons (list)

Baryons: Nucleons | Hyperons | Exotic baryons | Pentaquarks
Mesons: Pions | Kaons | Quarkonium | Exotic mesons
Atomic nuclei | Atoms | Molecules Particles explode from the collision point of two relativistic (100 GeV per nucleon) gold ions in the STAR detector of the Relativistic Heavy Ion Collider. ... Elementary particles An elementary particle is a particle with no measurable internal structure, that is, it is not a composite of other particles. ... In particle physics, a hadron is a subatomic particle which experiences the strong nuclear force. ... In particle physics, the baryons are a family of subatomic particles including the proton and the neutron (collectively called nucleons), as well as a number of unstable, heavier particles (called hyperons). ... Baryon decuplet: Spin=3/2 Baryon octet: Spin=1/2 This is a list of baryons. ... In particle physics, a meson is a strongly interacting boson, that is, it is a hadron with integral spin. ... A list of mesons. ... In physics a nucleon is a collective name for two baryons: the neutron and the proton. ... Ordinary baryons are bound states of 3 quarks. ... A pentaquark is a subatomic particle consisting of a group of five quarks (compared to three quarks in normal baryons and two in mesons), or more specifically four quarks and one anti-quark. ... In particle physics, pion (short for pi meson) is the collective name for three subatomic particles: π0, π+ and π−. Pions are the lightest mesons and play an important role in explaining low-energy properties of the strong nuclear force. ... 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. ... In high energy physics, a quarkonium (pl. ... Identities and classification of possible tetraquark mesons. ... A semi-accurate depiction of the helium atom. ... Properties In chemistry and physics, an atom (Greek ἄτομος or átomos meaning indivisible) is the smallest particle of a chemical element that retains its chemical properties. ... In chemistry, a molecule is an aggregate of at least two atoms in a definite arrangement held together by special forces. ...


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