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- W_and_Z_bosons abstract "The W and Z bosons (together known as the weak bosons or, less specifically, the intermediate vector bosons) are the elementary particles that mediate the weak interaction; their symbols are W+, W− and Z. The W bosons have a positive and negative electric charge of 1 elementary charge respectively and are each other's antiparticles. The Z boson is electrically neutral and is its own antiparticle. All three of these particles are very short-lived with a half-life of about 3×10−25 s. Their discovery was a major success for what is now called the Standard Model of particle physics.The W bosons are named after the weak force. The physicist Steven Weinberg named the additional particle the "Z particle", later giving the explanation that it was the last additional particle needed by the model – the W bosons had already been named – and that it has zero electric charge.The two W bosons are best known as mediators of neutrino absorption and emission, where their charge is associated with electron or positron emission or absorption, always causing nuclear transmutation. The Z boson is not involved in the absorption or emission of electrons and positrons.The Z boson mediates the transfer of momentum, spin, and energy when neutrinos scatter elastically from matter, something that must happen without the production or absorption of new, charged particles. Such behaviour (which is almost as common as inelastic neutrino interactions) is seen in bubble chambers irradiated with neutrino beams. Whenever an electron simply "appears" in such a chamber as a new free particle suddenly moving with kinetic energy, and moves in the direction of the neutrinos as the apparent result of a new impulse, and this behavior happens more often when the neutrino beam is present, it is inferred to be a result of a neutrino interacting directly with the electron. Here, the neutrino simply strikes the electron and scatters away from it, transferring some of the neutrino's momentum to the electron. Since i) neither neutrinos nor electrons are affected by the strong force, ii) neutrinos are electrically neutral (therefore don't interact electromagnetically), and iii) the incredibly small masses of these particles make any gravitational force between them negligible, such an interaction can only happen via the weak force. Since such an electron is not created from a nucleon, and is unchanged except for the new force impulse imparted by the neutrino, this weak force interaction between the neutrino and the electron must be mediated by a weak-force boson particle with no charge. Thus, this interaction requires a Z boson.".
- W_and_Z_bosons thumbnail Beta_Negative_Decay.svg?width=300.
- W_and_Z_bosons wikiPageExternalLink 28849.
- W_and_Z_bosons wikiPageExternalLink 29053.
- W_and_Z_bosons wikiPageExternalLink c4.
- W_and_Z_bosons wikiPageExternalLink pdg.lbl.gov.
- W_and_Z_bosons wikiPageExternalLink index.pl?node=Z%20particle.
- W_and_Z_bosons wikiPageID "405532".
- W_and_Z_bosons wikiPageRevisionID "604862456".
- W_and_Z_bosons composition Elementary_particle.
- W_and_Z_bosons discovered "UA1 and UA2 collaborations, CERN, 1983".
- W_and_Z_bosons electricCharge "W: ±1 e".
- W_and_Z_bosons electricCharge "Z: 0 e".
- W_and_Z_bosons group Gauge_boson.
- W_and_Z_bosons hasPhotoCollection W_and_Z_bosons.
- W_and_Z_bosons interaction Weak_interaction.
- W_and_Z_bosons mass "W:".
- W_and_Z_bosons mass "Z:".
- W_and_Z_bosons name "and Bosons".
- W_and_Z_bosons spin "1".
- W_and_Z_bosons statistics "Bosonic".
- W_and_Z_bosons theorized Abdus_Salam.
- W_and_Z_bosons theorized Sheldon_Lee_Glashow.
- W_and_Z_bosons theorized Steven_Weinberg.
- W_and_Z_bosons width "W:".
- W_and_Z_bosons width "Z:".
- W_and_Z_bosons subject Category:Bosons.
- W_and_Z_bosons subject Category:Electroweak_theory.
- W_and_Z_bosons subject Category:Gauge_bosons.
- W_and_Z_bosons subject Category:Particle_physics.
- W_and_Z_bosons subject Category:Standard_Model.
- W_and_Z_bosons comment "The W and Z bosons (together known as the weak bosons or, less specifically, the intermediate vector bosons) are the elementary particles that mediate the weak interaction; their symbols are W+, W− and Z. The W bosons have a positive and negative electric charge of 1 elementary charge respectively and are each other's antiparticles. The Z boson is electrically neutral and is its own antiparticle. All three of these particles are very short-lived with a half-life of about 3×10−25 s.".
- W_and_Z_bosons label "Bosones W y Z".
- W_and_Z_bosons label "Bosoni W e Z".
- W_and_Z_bosons label "Bósons W e Z".
- W_and_Z_bosons label "W and Z bosons".
- W_and_Z_bosons label "W- и Z-бозоны".
- W_and_Z_bosons label "W及Z玻色子".
- W_and_Z_bosons label "بوزونات دبليو و زد".
- W_and_Z_bosons label "ウィークボソン".
- W_and_Z_bosons sameAs Boson_W_a_Z.
- W_and_Z_bosons sameAs W_και_Z_μποζόνια.
- W_and_Z_bosons sameAs Bosones_W_y_Z.
- W_and_Z_bosons sameAs W_eta_Z_bosoi.
- W_and_Z_bosons sameAs Bosoni_W_e_Z.
- W_and_Z_bosons sameAs ウィークボソン.
- W_and_Z_bosons sameAs W와_Z보손.
- W_and_Z_bosons sameAs Bósons_W_e_Z.
- W_and_Z_bosons sameAs m.024cqx.
- W_and_Z_bosons sameAs Q211922.
- W_and_Z_bosons sameAs Q211922.
- W_and_Z_bosons wasDerivedFrom W_and_Z_bosons?oldid=604862456.
- W_and_Z_bosons depiction Beta_Negative_Decay.svg.
- W_and_Z_bosons isPrimaryTopicOf W_and_Z_bosons.