In particle physics, the electroweak interaction is the unified description of two of the four known fundamental interactions of nature: electromagnetism and the weak interaction. Although these two forces appear very different at everyday low energies, the theory models them as two different aspects of the same force. Above the unification energy, on the order of 100 GeV, they would merge into a single electroweak force.

1. QUANTUM FIELD THEORY
A Crash Course by Hasan Mohammad

2. Electroweak Interaction
1979 Nobel Prize Physics
What we’ll look at:
-Review on Spinors
-Massless Dirac Lagrangian
-Leptonic Fields/Charges
-Gauge Fields/unitary transformations
-Weinberg Angle
-Spontaneous Symmetry Breaking

3. Right and Left-Handed Spinors

4. Right and Left-Handed Spinors

5. Right and Left-Handed Spinors

6. Massless Dirac Lagrangian

7. Massless Dirac Lagrangian

8. Massless Dirac Lagrangian

9. Leptonic Fields

10. Leptonic Fields

11. Leptonic Fields

12. Leptonic Fields

13. Electroweak Charges

14. Unitary Transformations

15. Unitary Transformations

16. Unitary Transformations

17. Unitary Transformations

18. Unitary Transformations

19. Unitary Transformations

20. Unitary Transformations

21. Unitary Transformations

22. Higgs Symmetry Breaking

23. Higgs Symmetry Breaking

24. Higgs Symmetry Breaking

25. Higgs Symmetry Breaking

26. Higgs Symmetry Breaking

27. Higgs Symmetry Breaking

28. Gauge Masses

29. Gauge Masses

30. Gauge Masses

31. Gauge Masses

32. Gauge Masses

33. Gauge Masses

37. Weinberg Angle

38. Breaking the Symmetry

40. Looking for a Mass

41. Photon is massless!

42. Z-Particle Mass

43. Theoretical bounds…

44. •THANK YOU VERY
MUCH