"Electroweak theory"의 두 판 사이의 차이
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| − | == 메타데이터 == | + | ==메타데이터== |
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===위키데이터=== | ===위키데이터=== | ||
* ID : [https://www.wikidata.org/wiki/Q466416 Q466416] | * ID : [https://www.wikidata.org/wiki/Q466416 Q466416] | ||
| + | ===Spacy 패턴 목록=== | ||
| + | * [{'LOWER': 'electroweak'}, {'LEMMA': 'interaction'}] | ||
| + | * [{'LOWER': 'electroweak'}, {'LEMMA': 'force'}] | ||
2021년 2월 17일 (수) 02:35 기준 최신판
introduction
- Glashow-Weinberg-Salam model
- doublets of leptons and quarks => SU(2) symmetry
- W-boson mass causes some trouble
- Goldston boson
- Higgs mechanism
recipe
- start with the local gauge symmetric SU(2) Lagrangian with massless gauge fields
- introduce the Higgs field
- break the local gauge symmetry in such a way by a new interaction between the Higgs field and gauge fields so as to generate terms in the Lagrangian that look like mass terms for gauge fields
adjoining U(1) symmetry
\(\begin{pmatrix}\gamma \\Z^0 \end{pmatrix} = \begin{pmatrix}\cos \theta_W & \sin \theta_W \\-\sin \theta_W & \cos \theta_W \end{pmatrix} \begin{pmatrix}B^0 \\W^0 \end{pmatrix} \)
weak interactions
- massive gauge bosons
- W and Z bosons
consequences
- neutral currents
- new mesons
- parity violating effects
- W and Z bosons
W-boson
- massive charged spin 1 boson
Z-boson
- massive neutral spin 1 boson
weak force
- neutron beta decay
- muon decay
- high-energy neutrino collisions with matter
three classes of weak interactions
- leptonic reactions
- semi-leptonic reactions
- hadronic weak reactions
Higgs mechanism
- Higges field
- pervasive universal background field that modifies the simple electroweak gauge theory as the gravitational field caused by mass
- two initial charged massless weak field W, W^{+}
- mix with Higgs fields H^{+}, H^{-}
- W fields get mass
- two electrically neutral massless fields W^0, G^0
- mix with neutral Higgs field H^0
- Z-field massive neutral weak field
- resulting bosons
- W - massive charged spin 1
- Z- massive neutral spin 1 boson
- photon - massless spin 1
- Higgs - massive neutral scalar spin 0
encyclopedia
- http://en.wikipedia.org/wiki/Electroweak_interaction
- http://en.wikipedia.org/wiki/Quantum_electrodynamics
- http://en.wikipedia.org/wiki/Beta_decay
- http://en.wikipedia.org/wiki/weak_force
expositions
- Kibble, T. W. B. ‘History of Electroweak Symmetry Breaking’. arXiv:1502.06276 [hep-Ex, Physics:hep-Ph, Physics:hep-Th, Physics:physics], 22 February 2015. http://arxiv.org/abs/1502.06276.
articles
- Hitoshi Murayama Why do we want a linear collider, 1996
메타데이터
위키데이터
- ID : Q466416
Spacy 패턴 목록
- [{'LOWER': 'electroweak'}, {'LEMMA': 'interaction'}]
- [{'LOWER': 'electroweak'}, {'LEMMA': 'force'}]