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Higgs Mechanism

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In particle physics, the Higgs mechanism is essential to explain the generation mechanism of the property "mass" for gauge bosons. The simplest description of the mechanism adds a Higgs field to the Standard Model gauge theory. The symmetry breaking triggers conversion of the longitudinal field component to the Higgs boson, which interacts with itself and (at least a part of) the other fields in the theory, so as to produce mass terms for the Z and W bosons.

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Higgs Mechanism 3 rd Lecture in QFT Series by Hasan Mohammad

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Page 1: Higgs Mechanism

Higgs Mechanism3rd Lecture in QFT Series by Hasan Mohammad

Page 2: Higgs Mechanism

Introduction

2013 Nobel Prize in Physics 1964 PRL papers 2012 Higgs Boson Discovery

Lecture Content Symmetry Breaking Mass Terms in Lagrangian SSB and Mass Lagrangians with Multiple Particles Higgs Mechanism

Page 3: Higgs Mechanism

Concept Review

Page 4: Higgs Mechanism

Field Theory Symmetry Breaking

Page 5: Higgs Mechanism

Field Theory Symmetry Breaking

Page 6: Higgs Mechanism

Field Theory Symmetry Breaking

Page 7: Higgs Mechanism

Field Theory Symmetry Breaking

Page 8: Higgs Mechanism

Field Potentials

Page 9: Higgs Mechanism

Mass Terms

Page 10: Higgs Mechanism

Mass Terms

Page 11: Higgs Mechanism

Mass Terms

Page 12: Higgs Mechanism

SSM and Mass

Page 13: Higgs Mechanism

SSM and Mass

Page 14: Higgs Mechanism

SSM and Mass

Page 15: Higgs Mechanism

Interaction Terms

Page 16: Higgs Mechanism

Interaction Terms

Page 17: Higgs Mechanism

Multiple Particles

Page 18: Higgs Mechanism

Multiple Particles

Page 19: Higgs Mechanism

Multiple Particles

Page 20: Higgs Mechanism

Multiple Particles

Page 21: Higgs Mechanism

Multiple Particles

Page 22: Higgs Mechanism

Free Parts

Page 23: Higgs Mechanism

Free Parts

Page 24: Higgs Mechanism

Free Parts

Page 25: Higgs Mechanism

Higgs Mechanism!

Page 26: Higgs Mechanism

Higgs Mechanism!

Page 27: Higgs Mechanism

Higgs Mechanism!

Page 28: Higgs Mechanism

Using the Higgs

Page 29: Higgs Mechanism

Using the Higgs

Page 30: Higgs Mechanism

Final Lagrangian

Page 31: Higgs Mechanism

Components

Page 32: Higgs Mechanism

Final words…

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