nLab composite Higgs model

Contents

Context

Fields and quanta

fields and particles in particle physics

and in the standard model of particle physics:

force field gauge bosons

photon - electromagnetic field (abelian Yang-Mills field)
W, Z, B-boson - electroweak field (Yang-Mills field)
gluon - strong nuclear force (Yang-Mills field)
graviton - field of gravity
infraparticle

scalar bosons

Higgs boson, inflaton (scalar field)

matter field fermions (spinors, Dirac fields)

flavors of fundamental fermions in the standard model of particle physics:
generation of fermions	1st generation	2nd generation	3d generation
quarks ( $q$ )
up-type	up quark ( $u$ )	charm quark ( $c$ )	top quark ( $t$ )
down-type	down quark ( $d$ )	strange quark ( $s$ )	bottom quark ( $b$ )
leptons
charged	electron	muon	tauon
neutral	electron neutrino	muon neutrino	tau neutrino

bound states:
mesons	light mesons: pion ( $u d$ ) ρ-meson ( $u d$ ) ω-meson ( $u d$ ) f1-meson a1-meson	strange-mesons: ϕ-meson ( $s \bar s$ ), kaon, K-meson ( $u s$ , $d s$ ) eta-meson ( $u u + d d + s s$ ) charmed heavy mesons*: D-meson ( $u c$ , $d c$ , $s c$ ) J/ψ-meson ( $c \bar c$ )	bottom heavy mesons: B-meson ( $q b$ ) ϒ-meson ( $b \bar b$ )
baryons	nucleons: proton $(u u d)$ neutron $(u d d)$

(also: antiparticles)

effective particles

Goldstone bosons

hadrons (bound states of the above quarks)

meson
- scalar meson
  - σ-meson
  - pion
  - kaon
  - D-meson
  - B-meson
- vector meson
  - ω-meson
  - ρ-meson
  - f1-meson
  - a1-meson
  - b1-meson
  - h1-meson
  - K*-meson
- tensor meson
- quarkonium
  - charmonium
  - ϒ-meson
exotic meson
- XYZ meson
- tetraquark
baryon
- nucleon
  - proton
  - neutron
  - chemical element
    - carbon
    - nitrogen
- Lambda baryon
- pentaquark

solitons

in grand unified theory

minimally extended supersymmetric standard model

superpartners

bosinos:

gravitino - field of supergravity (Rarita-Schwinger field)
gaugino - super Yang-Mills field
gluino

sfermions:

squark

dark matter candidates

WIMP
axion

Exotica

auxiliary fields

Idea
Related concepts
References

General
Flavour anomalies

Idea

Composite Higgs Models are speculative models (in theoretical physics) which explore the possibility that the Higgs boson is not fundamental, but a bound state in a more fundamental strongly interacting sector beyond the current standard model of particle physics which gives rise to electro-weak symmetry breaking.

While the measurement of the apparent Higgs boson at the LHC strongly disfavours technicolor models (which is the other main class of models where the Higgs field is not actually fundamental), composite Higgs models are still viable. They are commonly argued to be an alternative to supersymmetry with regards to the naturalness-issue, and the have been argued to possibly explain the observer flavour anomalies (see the references below).

Related concepts

technicolor

References

General

Review includes

Oliver Witzel, Review on Composite Higgs Models (arXiv:1901.08216)

Flavour anomalies

Attempts to explain the flavour anomalies with a composite Higgs boson:

David Marzocca, Addressing the B-physics anomalies in a fundamental Composite Higgs Model, JHEP07(2018)121 (arXiv:1803.10972)
Andreas Crivellin, Dario Müller, Christoph Wiegand, $b \to s \ell^+ \ell^-$ Transitions in Two-Higgs-Doublet Models (arXiv:1903.10440)
Peter Stangl, Flavour anomalies and (fundamental) partial compositeness (arXiv:1907.05158)

Last revised on April 14, 2021 at 06:22:21. See the history of this page for a list of all contributions to it.