2.1 The Standard Model Standard Model 2.1 page 1 Standard Model 2.1 page 2 Standard Model 2.1 page 3 Standard Model 2.1 page 4 Standard Model 2.1 page 5 Standard Model 2.1 page 6 Standard Model 2.1 page 7 Standard Model 2.1 page 8 Standard Model 2.1 page 9 Standard Model 2.1 page 10 Standard Model 2.1 page 11