Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Pion> ?p ?o }
- Pion abstract "In particle physics, a pion (or a pi meson, denoted with the Greek letter pi: π) is any of three subatomic particles: π0, π+, and π−. Each pion consists of a quark and an antiquark and is therefore a meson. Pions are the lightest mesons (and, more generally, the lightest hadrons), because they are composed of the lightest quarks (the u and d quarks). They are unstable, with the charged pions π+ and π− decaying with a mean lifetime of 26 nanoseconds (6992260000000000000♠2.6×10−8 seconds), and the neutral pion π0 decaying with a much shorter lifetime of 6983840000000000000♠8.4×10−17 seconds. Charged pions most often decay into muons and muon neutrinos, while neutral pions generally decay into gamma rays.The exchange of virtual pions, along with the vector, rho and omega mesons, provides an explanation for the residual strong force between nucleons. Pions are not produced in radioactive decay, but are commonly produced in high energy accelerators in collisions between hadrons. All types of pion are also produced in natural processes when high energy cosmic ray protons and other hadronic cosmic ray components interact with matter in the Earth's atmosphere. Recently, the detection of characteristic gamma rays originating from the decay of neutral pions in two supernova remnant stars has shown that pions are produced copiously in supernovas, most probably in conjunction with production of high energy protons that are detected on Earth as cosmic rays.The concept of mesons as the carrier particles of the nuclear force was first proposed in 1935 by Hideki Yukawa. While the muon was first proposed to be this particle after its discovery in 1936, later work found that it did not participate in the strong nuclear interaction. The pions, which turned out to be examples of Yukawa's proposed mesons, were discovered later: the charged pions in 1947, and the neutral pion in 1950.".
- Pion thumbnail Quark_structure_pion.svg?width=300.
- Pion wikiPageExternalLink mxxx.pdf.
- Pion wikiPageID "36961".
- Pion wikiPageLength "23616".
- Pion wikiPageOutDegree "170".
- Pion wikiPageRevisionID "706714359".
- Pion wikiPageWikiLink Adjoint_representation.
- Pion wikiPageWikiLink Alpha_particle.
- Pion wikiPageWikiLink Andes.
- Pion wikiPageWikiLink Antiparticle.
- Pion wikiPageWikiLink Atomic_nucleus.
- Pion wikiPageWikiLink Berkeley,_California.
- Pion wikiPageWikiLink Beta_decay.
- Pion wikiPageWikiLink Boson.
- Pion wikiPageWikiLink Bottomness.
- Pion wikiPageWikiLink Branching_fraction.
- Pion wikiPageWikiLink C-symmetry.
- Pion wikiPageWikiLink C._F._Powell.
- Pion wikiPageWikiLink CERN.
- Pion wikiPageWikiLink C_parity.
- Pion wikiPageWikiLink Carbon.
- Pion wikiPageWikiLink Category:Mesons.
- Pion wikiPageWikiLink Chacaltaya.
- Pion wikiPageWikiLink Charm_(quantum_number).
- Pion wikiPageWikiLink Chiral_anomaly.
- Pion wikiPageWikiLink Chiral_perturbation_theory.
- Pion wikiPageWikiLink Chiral_symmetry_breaking.
- Pion wikiPageWikiLink Cloud_chamber.
- Pion wikiPageWikiLink Compton_scattering.
- Pion wikiPageWikiLink Cosmic_microwave_background.
- Pion wikiPageWikiLink Cosmic_ray.
- Pion wikiPageWikiLink Cyclotron.
- Pion wikiPageWikiLink César_Lattes.
- Pion wikiPageWikiLink Dispersion_relation.
- Pion wikiPageWikiLink Down_quark.
- Pion wikiPageWikiLink Effective_field_theory.
- Pion wikiPageWikiLink Electric_charge.
- Pion wikiPageWikiLink Electromagnetism.
- Pion wikiPageWikiLink Electron.
- Pion wikiPageWikiLink Electron_neutrino.
- Pion wikiPageWikiLink Electronvolt.
- Pion wikiPageWikiLink Elementary_charge.
- Pion wikiPageWikiLink Eta_meson.
- Pion wikiPageWikiLink Euclidean_vector.
- Pion wikiPageWikiLink Eugene_Gardner.
- Pion wikiPageWikiLink Exponential_decay.
- Pion wikiPageWikiLink Feynman_diagram.
- Pion wikiPageWikiLink Flavour_(particle_physics).
- Pion wikiPageWikiLink Fundamental_representation.
- Pion wikiPageWikiLink G-parity.
- Pion wikiPageWikiLink Gamma_ray.
- Pion wikiPageWikiLink Gelatin_silver_process.
- Pion wikiPageWikiLink Gell-Mann–Nishijima_formula.
- Pion wikiPageWikiLink Generation_(particle_physics).
- Pion wikiPageWikiLink Gerald_E._Brown.
- Pion wikiPageWikiLink Giuseppe_Occhialini.
- Pion wikiPageWikiLink Goldstone_boson.
- Pion wikiPageWikiLink Greek_alphabet.
- Pion wikiPageWikiLink Greisen–Zatsepin–Kuzmin_limit.
- Pion wikiPageWikiLink Hadron.
- Pion wikiPageWikiLink Helicity_(particle_physics).
- Pion wikiPageWikiLink Hideki_Yukawa.
- Pion wikiPageWikiLink Invariant_mass.
- Pion wikiPageWikiLink Isospin.
- Pion wikiPageWikiLink Kaon.
- Pion wikiPageWikiLink Kinematics.
- Pion wikiPageWikiLink Klein–Gordon_equation.
- Pion wikiPageWikiLink Lagrangian_(field_theory).
- Pion wikiPageWikiLink Lepton.
- Pion wikiPageWikiLink List_of_mesons.
- Pion wikiPageWikiLink List_of_particles.
- Pion wikiPageWikiLink Los_Alamos_National_Laboratory.
- Pion wikiPageWikiLink Mass.
- Pion wikiPageWikiLink Meson.
- Pion wikiPageWikiLink Microscope.
- Pion wikiPageWikiLink Muon.
- Pion wikiPageWikiLink Muon_neutrino.
- Pion wikiPageWikiLink Nanosecond.
- Pion wikiPageWikiLink New_Mexico.
- Pion wikiPageWikiLink Nobel_Prize_in_Physics.
- Pion wikiPageWikiLink Nuclear_force.
- Pion wikiPageWikiLink Nucleon.
- Pion wikiPageWikiLink Parity_(physics).
- Pion wikiPageWikiLink Particle_Data_Group.
- Pion wikiPageWikiLink Particle_accelerator.
- Pion wikiPageWikiLink Particle_physics.
- Pion wikiPageWikiLink Photographic_emulsion.
- Pion wikiPageWikiLink Photographic_plate.
- Pion wikiPageWikiLink Photon.
- Pion wikiPageWikiLink Pi.
- Pion wikiPageWikiLink Pic_du_Midi_de_Bigorre.
- Pion wikiPageWikiLink Pion_decay_constant.
- Pion wikiPageWikiLink Pionium.
- Pion wikiPageWikiLink Positron.
- Pion wikiPageWikiLink Positronium.
- Pion wikiPageWikiLink Pseudoscalar.
- Pion wikiPageWikiLink Pseudovector.
- Pion wikiPageWikiLink Pyrenees.
- Pion wikiPageWikiLink Quantum_chromodynamics.