dr aidan robson. the standard model of particle physics

The Large Hadron Colliderand the Higgs Boson

Dr Aidan Robson

PARTICLE PHYSICS

SSERC/RCUK CPD

The Standard Model of Particle Physics

The Standard Model of Particle Physics

The Standard Model of Particle Physics

The Standard Model of Particle Physics

The Standard Model of Particle Physics

?

proton? proton?

photon

~450nm

photon

De Broglie

De Broglie

Glasgow electron microscope

electron

proton? proton?

Glasgow electron microscope Stanford linear accelerator (1960)

Stanford linear accelerator (1960)

proton? proton?

Glasgow electron microscope Stanford linear accelerator (1960)

Stanford linear accelerator (1960)

proton

Four forces of nature

Weak

Strong

Electromagnetic

Gravity

electric charge

mass

weak charge

strongcharge

The Standard Model of Particle Physics

The Standard Model of Particle Physics

mesons= 2 quarks

baryons= 3 quarks

+ + + - - -±

+ + + - - -±

+2 3

–1 3

–2 3

+1 3

‘Young man, if I could remember

the names of these particles,

I would have been a botanist!’

E. Fermi to his student

L. Lederman (both Nobel prizewinners)

The Standard Model of Particle Physics

H

t,bg

g

l–

l+

l–

l+

Z

Z

Couplings

Couplings

H→tt : New result 26/11/13 !

Picture from Marusa Bradac

Higher