Editing Elementary particle (section)

== Overview ==
{{Main|Standard Model}}
{{See also|Physics beyond the Standard Model}}
<!--[[File:Particle overview.svg|thumb|400px|An overview of the various families of elementary and composite particles, and the theories describing their interactions]]
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All elementary particles are either [[boson]]s or [[fermion]]s. These classes are distinguished by their [[quantum statistics]]: fermions obey [[Fermi–Dirac statistics]] and bosons obey [[Bose–Einstein statistics]].<ref name=PFI>
{{cite book
 |first1=Sylvie |last1=Braibant
 |first2=Giorgio |last2=Giacomelli
 |first3=Maurizio |last3=Spurio
 |year=2012
 |title=Particles and Fundamental Interactions: An introduction to particle physics
 |url=https://books.google.com/books?id=e8YUUG2pGeIC&pg=PA384
 |edition=2nd
 |publisher=[[Springer (publisher)|Springer]]
 |isbn=978-94-007-2463-1
 |pages=1–3
}}</ref> Their [[Spin (physics)|spin]] is differentiated via the [[spin–statistics theorem]]: it is [[half-integer]] for fermions, and [[integer]] for bosons.
{{Elementary particles}}
<!--
;'''Elementary fermions:'''
*[[Matter]] particles
**[[Quark]]s:
*** [[up quark|up]], [[down quark|down]]
***[[charm quark|charm]], [[strange quark|strange]]
***[[top quark|top]], [[bottom quark|bottom]]
**[[Lepton]]s:
***[[electron]], [[electron neutrino]] ([[Pseudonym|a.k.a.]], "neutrino")
***[[muon]], [[muon neutrino]]
***[[tau (particle)|tau]], [[tau neutrino]]
*[[Antimatter]] particles
**[[Antiquark]]s
**[[Antilepton]]s

;'''Elementary bosons:'''
*[[Force carrier|Force particles]] ([[gauge boson]]s):
**[[photon]]
** [[gluon]] (numbering eight)<ref name=PFI />
**[[W and Z bosons|''W''<sup>+</sup>, ''W''<sup>−</sup>, and ''Z''<sup>0</sup> bosons]]
**[[graviton]] (hypothetical)<ref name=PFI />
*[[Scalar boson]]
** [[Higgs boson]]
-->

In the [[Standard Model]], elementary particles are represented for [[scientific formalism|predictive utility]] as [[point particle]]s. Though extremely successful, the Standard Model is limited by its omission of [[gravitation]] and has some parameters arbitrarily added but unexplained.<ref>{{harvnb|Braibant|Giacomelli|Spurio|2012|p=384}}</ref>