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List of particles
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==== Quarks ==== [[Quark]]s are the fundamental constituents of [[hadron]]s and interact via the [[strong force]]. Quarks are the only known carriers of [[fractional charge]], but because they combine in groups of three quarks (baryons) or in pairs of one quark and one [[antiquark]] (mesons), only integer charge is observed in nature. Their respective [[antiparticle]]s are the [[antiquark]]s, which are identical except that they carry the opposite electric charge (for example the up quark carries charge +{{sfrac|2|3}}''e'', while the up antiquark carries charge β{{sfrac|2|3}}''e''), color charge, and baryon number. There are six [[flavor (particle physics)|flavors]] of quarks; the three positively charged quarks are called "up-type quarks" while the three negatively charged quarks are called "down-type quarks". {|class="wikitable sortable" style="margin:1em auto; text-align:center" |+Quarks |- ! Generation !! Name !! Symbol !! Antiparticle !! Spin{{br}}{{bracket|[[reduced Planck constant|''Δ§'']]}} !! Charge{{br}}{{bracket|[[elementary charge|''e'']]}} !! data-sort-type="number"|Mass<ref name="PDG Light Quarks">{{cite web |title=Light quarks (u, d, s)|url=https://pdglive.lbl.gov/Particle.action?node=Q123&init=0 |website=pdglive.lbl.gov |publisher=Particle Data Group |access-date=24 September 2024}}</ref><ref name="PDG Charm Quark">{{cite web |title=c quark|url=https://pdglive.lbl.gov/Particle.action?node=Q004&init=0 |website=pdglive.lbl.gov |publisher=Particle Data Group |access-date=24 September 2024}}</ref><ref name="PDG Bottom Quark">{{cite web |title=b quark|url=https://pdglive.lbl.gov/Particle.action?node=Q005&init=0 |website=pdglive.lbl.gov |publisher=Particle Data Group |access-date=24 September 2024}}</ref><ref name="PDG Top Quark">{{cite web |title=t quark|url=https://pdglive.lbl.gov/Particle.action?node=Q007&init=0 |website=pdglive.lbl.gov |publisher=Particle Data Group |access-date=24 September 2024}}</ref>{{br}}{{bracket|[[electronvolt|MeV]]/[[speed of light|''c'']]<sup>2</sup>}} |- |rowspan=2| 1 | [[Up quark|up]] || u || {{Subatomic particle|up antiquark}} |data-sort-value="1"|{{sfrac|1|2}} || +{{sfrac|2|3}} || {{val|2.16|0.07}} |- | [[Down quark|down]] || d || {{Subatomic particle|down antiquark}} |data-sort-value="2"|{{sfrac|1|2}} || β{{sfrac|1|3}} || {{val|4.70|0.07}} |- |rowspan=2| 2 | [[Charm quark|charm]] || c || {{Subatomic particle|charm antiquark}} |data-sort-value="3"|{{sfrac|1|2}} || +{{sfrac|2|3}} || {{val|1,273.0|4.6}} |- | [[Strange quark|strange]] || s || {{Subatomic particle|strange antiquark}} |data-sort-value="4"|{{sfrac|1|2}} || β{{sfrac|1|3}} || {{val|93.5|0.8}} |- |rowspan=2| 3 | [[Top quark|top]] || t || {{Subatomic particle|top antiquark}} |data-sort-value="5"|{{sfrac|1|2}} || +{{sfrac|2|3}} || {{val|172570|290}} |- | [[Bottom quark|bottom]] || b || {{Subatomic particle|bottom antiquark}} |data-sort-value="6"|{{sfrac|1|2}} || β{{sfrac|1|3}} || {{val|4,183|7}} |}
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