]> Subatomic Particle Ontology (primitive) Michel Dumontier en An ontology of subatomic particles. 2007-10-01 application/rdf+xml Dumontier Lab 2.0 tau-plus particle antiauon The antiparticle of the auon. antibaryon An antibaryon is the antiparticle of a baryon; a hadron with a baryon number of -1. antiboson An antiparticle of the boson. Antiparticle to the fermion. antifermion An antiparticle of a lepton. antilepton antimeson An antiparticle of a meson. antimuon An antiparticle of a muon. An antiparticle of the neutrino. antineutrino An antineutron is the antiparticle of a neutron. antineutron antiparticle An antiparticle is a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy antiproton The antiparticle of a proton; unstable negatively charged proton. antiquark The antiparticle of a quark. A b-meson is an exceedingly short-lived meson. b-meson baryon A Baryon is an elementary particle having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1 A beta particle is an electron or positron emitted in the decay of a radioactive isotope. beta particle A boson is a particle that obeys Bose-Einstein statistics but not the Pauli exclusion principle; all nuclei with an even mass number are bosons. boson Antiparticle of the bottom quark. bottom antiquark A quark with a charge of -1/3 and a mass about 10,000 times that of an electron. bottom quark Antiparticle of the charm quark. charm antiquark charm quark A quark with an electric charge of +2/3 and a mass 2900 times that of an electron and a charm of +1. A subatomic particle that is made up of two or more elementary particles. composite particle An electron ejected from matter by ionizing radiation. delta ray down antiquark Antiparticle of the down quark. down quark A stable quark with an electric charge of -1/3 and a mass 607 times that of an electron. electron An elementary particle with negative charge. An elementary particle is a subatomic particle that is indivisible. fundamental particle elementary particle fermion A subatomic particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle. free electron An electron that is not attached to an atom or ion or molecule but is free to move under the influence of an electric field. A boson that mediates the interaction of two elementary particles. gauge boson gluon A gauge boson that mediates strong interaction among quarks. graviton A gauge boson that mediates the (extremely weak) gravitational interactions between particles An elementary particle that interacts strongly with other particles. hadron hyperon A hyperon is a baryon that is not a nucleon; unstable particle with mass greater than a neutron psi particle J particle A J particle is a neutral meson with a large mass. A kaon is an unstable meson produced as the result of a high-energy particle collision k-meson kaon kappa-meson K particle lamda hyperon A lambda hyperon is an electrically neutral baryon with isotopic spin 1. A fermion that participates in weak interactions; has a baryon number of 0. lepton A meson is an elementary particle responsible for the forces in the atomic nucleus. meson A lepton with a negative charge and a half-life of 2 microsecond; decays to electron and neutrino and antineutrino. mu-meson muon negative muon An elementary particle. neutrino A subatomic particle with no net electric charge and a mass of 939.6 MeV/c² and spin 1/2. neutron photoelectron An electron that is emitted from an atom or molecule by an incident photon. photon A quantum of electromagnetic radiation. pi-meson pion A pion is a meson involved in holding the nucleus together; produced as the result of high-energy particle collision antielectron positron An antiparticle of the electron. proton A stable particle with positive charge equal to the negative charge of an electron. A quark is an elementary particle in mesons and baryons. quark strange antiquark Antiparticle of the strange quark. strange quark A quark with an electric charge of -1/3 and a mass 988 times that of an electron and a strangeness of -1. subatomic particle Any particle smaller than an atom. A tauon is a lepton of very great mass. tauon tau-minus particle top antiquark Antiparticle of the top quark. top quark A (hypothetical) quark with a charge of +2/3 and a mass more than 100,000 times that of an electron. Antiparticle of the up quark. up antiquark up quark A stable quark with an electric charge of +2/3 and a mass 607 times that of an electron. An electron in the outer shell of an atom which can combine with other atoms to form molecules. valence electron A gauge boson that mediates weak forces. w boson A gauge boson that mediates weak froces and has zero electric charge. z boson