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== Elementary antiparticles == {| class="wikitable" |+Antiquarks !Generation !Name !Symbol !Spin !Charge ([[Elementary charge|e]]) !Mass ([[Electronvolt|MeV]]/[[Speed of light|''c'']]<sup>2</sup>) <ref name="PDG2016">{{cite journal |author=Particle Data Group |year=2016 |title=Review of Particle Physics |url=https://cds.cern.ch/record/2241948 |journal=Chinese Physics C |volume=40 |issue=10 |pages=100001 |bibcode=2016ChPhC..40j0001P |doi=10.1088/1674-1137/40/10/100001 |s2cid=125766528 |hdl-access=free |hdl=1983/c6dc3926-daee-4d0e-9149-5ff3a8120574}}</ref> !Observed |- | rowspan="2" |1 |[[Up quark|up antiquark]] |{{Subatomic particle|up antiquark}} |{{frac|1|2}} |β{{frac|2|3}} |{{val|2.2|0.6|0.4}} |Yes |- |[[Down quark|down antiquark]] |{{Subatomic particle|down antiquark}} |{{frac|1|2}} | +{{frac|1|3}} |{{val|4.6|0.5|0.4}} |Yes |- | rowspan="2" |2 |[[Charm quark|charm antiquark]] |{{Subatomic particle|charm antiquark}} |{{frac|1|2}} |β{{frac|2|3}} |{{val|1,280|30}} |Yes |- |[[Strange quark|strange antiquark]] |{{Subatomic particle|strange antiquark}} |{{frac|1|2}} | +{{frac|1|3}} |{{val|96|8|4}} |Yes |- | rowspan="2" |3 |[[Top quark|top antiquark]] |{{Subatomic particle|top antiquark}} |{{frac|1|2}} |β{{frac|2|3}} |{{val|173100|600}} |Yes |- |[[Bottom quark|bottom antiquark]] |{{Subatomic particle|bottom antiquark}} |{{frac|1|2}} | +{{frac|1|3}} |{{val|4,180|40|30}} |Yes |} {| class="wikitable" |+Antileptons !Generation !Name !Symbol !Spin !Charge ([[Elementary charge|e]]) !Mass ([[Electronvolt|MeV]]/[[Speed of light|''c'']]<sup>2</sup>) <ref name="PDG2016" /> !Observed |- | rowspan="2" |1 |[[positron]] |{{Subatomic particle|positron}} |{{sfrac|β―1β―|2}} | +1 |0.511 |Yes |- |[[electron antineutrino]] |{{math|{{Subatomic particle|electron antineutrino}}}} |{{sfrac|β―1β―|2}} |{{figure space}}0 |{{nobr|< 0.0000022}} |Yes |- | rowspan="2" |2 |[[Muon|antimuon]] |{{math|{{Subatomic particle|antimuon}}}} |{{sfrac|β―1β―|2}} | +1 |105.7 |Yes |- |[[Muon neutrino|muon antineutrino]] |{{math|{{Subatomic particle|muon antineutrino}}}} |{{sfrac|β―1β―|2}} |{{figure space}}0 |{{nobr|< 0.170}} |Yes |- | rowspan="2" |3 |[[Tau (particle)|antitau]] |{{math|{{Subatomic particle|antitau}}}} |{{sfrac|β―1β―|2}} | +1 |{{val|1,776.86|0.12}} |Yes |- |[[Tau neutrino|tau antineutrino]] |{{math|{{Subatomic particle|tau antineutrino}}}} |{{sfrac|β―1β―|2}} |{{figure space}}0 |{{nobr|< 15.5}} |Yes |} {| class="wikitable" |+Antibosons !Name !Symbol !Spin !Charge ([[Elementary charge|''e'']]) !Mass (GeV/''c''<sup>2</sup>) <ref name="PDG20162">{{cite journal |author=Particle Data Group |year=2016 |title=Review of Particle Physics |url=https://cds.cern.ch/record/2241948 |journal=Chinese Physics C |volume=40 |issue=10 |pages=100001 |bibcode=2016ChPhC..40j0001P |doi=10.1088/1674-1137/40/10/100001 |s2cid=125766528 |hdl-access=free |hdl=1983/c6dc3926-daee-4d0e-9149-5ff3a8120574}}</ref> !Interaction mediated !Observed |- |[[W and Z bosons|anti W boson]] |{{Subatomic particle|W Boson+}} |1 | +1 |{{val|80.385|0.015}} |[[weak interaction]] |Yes |}
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