THE STANDARD MODEL OF PARTICLE PHYSICS

ANIL MITRA PHD, COPYRIGHT 1999, REFORMATTED June 2003

HOME | CONTACT


Document status, June 7, 2003

Resource


THE STANDARD MODEL OF PARTICLE PHYSICS

1.    The elementary particles: quarks and leptons - three generations, the first is the primary constituent of matter

2.    The forces - electromagnetic, weak and strong…and their transmitters: weak bosons - W and Z, photon, gluon, Higgs

3.    Composite particles: baryons made up of three quarks - the proton and neutron…and mesons made of a quark and an anti-quark. The baryons and the mesons together comprise the hadrons - particles built from quarks and so experiencing the strong nuclear force

4.    Foundations, dynamics and symmetry. One view of symmetry ‘breaking’ is that symmetry is the foundation of structure and breaking allows creation and decay. Therefore any universe that came into existence will exhibit both symmetry and breaking and is subject to dissolution

5.    The parameters, tests of the model…and alternatives

Table 1 Particles of the Standard Model

 

PARTICLE

SYMBOL

CHARGE

MASS [GeV/c2]

FIRST GENERATION

QUARKS

UP

u

+2/3

0.03

DOWN

d

-1/3

0.06

LEPTONS

ELECTRON

e-

-1

0.0005

ELECTRON NEUTRINO

n e

0

0?

SECOND GENERATION

QUARKS

CHARM

c

+2/3

1.3

STRANGE

s

-1/3

0.14

LEPTONS

MUON

m -

-1

0.106

MUON NEUTRINO

n m

0

0?

THIRD GENERATION

QUARKS

TOP

t

+2/3

174

BOTTOM

b

-1/3

4.3

LEPTONS

TAU

t -

-1

1.7

TAU NEUTRINO

n t

0

0?

Table 2 Composite Particles

PARTICLE

ANTIPARTICLE

NAME

SYMBOL

CONTENT

NAME

SYMBOL

CONTENT

PROTON

p

uud

ANTIPROTON

p*

u*u*d*

NEUTRON

n

udd

ANTINEUTRON

n*

u*d*d*

PI-PLUS

p +

ud*

ANTIPI-PLUS

p *+

u*d

PI-ZERO

p 0

uu* + dd*

ANTIPI-ZERO

p *0

uu* + dd*

K-ZERO

K0

ds*

ANTIK-ZERO

K*0

d*s

B-ZERO

B0

db*

ANTIB-ZERO

B*0

d*b

ANIL MITRA | RESUME | HORIZONS ENTERPRISES™ | HOME | SITE-MAP | USEFUL LINKS | CONTACT
PHILOSOPHY OF MIND