11 jan. 2017
The Standard Model of particle physics
The Standard Model of elementary particles (more schematic depiction), with the three generations of matter, gauge bosons in the fourth column, and the Higgs boson in the fifth
Standard Model of particle physics
is a theory concerning the electromagnetic, weak, and strong nuclear interactions, as well as classifying all the subatomic particles known.
It was developed throughout the latter half of the 20th century, as a collaborative effort of scientists around the world.[1]
The current formulation was finalized in the mid-1970s upon experimental confirmation of the existence of quarks.
Since then, discoveries of the top quark (1995), the tau neutrino (2000), and the Higgs boson (2012) have given further credence to the Standard Model.
Because of its success in explaining a wide variety of experimental results, the Standard Model is sometimes regarded as the "theory of almost everything".
Although the Standard Model is believed to be theoretically self-consistent[2] and has demonstrated huge and continued successes in providing experimental predictions, it does leave some phenomena unexplained and it falls short of being a complete theory of fundamental interactions.
It does not incorporate the full theory of gravitation[3] as described by general relativity, or account for the accelerating expansion of the Universe (as possibly described by dark energy). The model does not contain any viable dark matter particle that possesses all of the required properties deduced from observational cosmology.
It also does not incorporate neutrino oscillations (and their non-zero masses).
The development of the Standard Model was driven by theoretical and experimental particle physicists alike.
For theorists, the Standard Model is a paradigm of a quantum field theory, which exhibits a wide range of physics including spontaneous symmetry breaking, anomalies and non-perturbative behavior.
It is used as a basis for building more exotic models that incorporate hypothetical particles, extra dimensions, and elaborate symmetries (such as supersymmetry) in an attempt to explain experimental results at variance with the Standard Model, such as the existence of dark matter and neutrino oscillations.
https://en.wikipedia.org/wiki/Standard_Model
The Standard Model of particle physics
Standard Model of particle physics
 Large Hadron Collider tunnel at CERN |
is a theory concerning the electromagnetic, weak, and strong nuclear interactions, as well as classifying all the subatomic particles known.
It was developed throughout the latter half of the 20th century, as a collaborative effort of scientists around the world.[1]
The current formulation was finalized in the mid-1970s upon experimental confirmation of the existence of quarks.
Since then, discoveries of the top quark (1995), the tau neutrino (2000), and the Higgs boson (2012) have given further credence to the Standard Model.
Because of its success in explaining a wide variety of experimental results, the Standard Model is sometimes regarded as the "theory of almost everything".
Although the Standard Model is believed to be theoretically self-consistent[2] and has demonstrated huge and continued successes in providing experimental predictions, it does leave some phenomena unexplained and it falls short of being a complete theory of fundamental interactions.
It does not incorporate the full theory of gravitation[3] as described by general relativity, or account for the accelerating expansion of the Universe (as possibly described by dark energy). The model does not contain any viable dark matter particle that possesses all of the required properties deduced from observational cosmology.
It also does not incorporate neutrino oscillations (and their non-zero masses).
The development of the Standard Model was driven by theoretical and experimental particle physicists alike.
For theorists, the Standard Model is a paradigm of a quantum field theory, which exhibits a wide range of physics including spontaneous symmetry breaking, anomalies and non-perturbative behavior.
It is used as a basis for building more exotic models that incorporate hypothetical particles, extra dimensions, and elaborate symmetries (such as supersymmetry) in an attempt to explain experimental results at variance with the Standard Model, such as the existence of dark matter and neutrino oscillations.
Contents
- 1 Historical background
- 2 Overview
- 3 Particle content
- 4 Theoretical aspects
- 5 Fundamental forces
- 6 Tests and predictions
- 7 Challenges
- 8 See also
- 9 Notes and references
- 10 References
- 11 Further reading
- 12 External links
https://en.wikipedia.org/wiki/Standard_Model
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