Particles of the Standard Model

TU Dresden Particles of the Standard Model Sophie Koßagk

StructureHistorical introductionDefinitionParticle classificationFermions

Quarks Leptons

Gauge bosons, HiggsSummary Sources

TU Dresden Particles of the Standard Model Sophie Koßagk

Historical introductionWhat is the World Made of?

TU Dresden Particles of the Standard Model Sophie Koßagk

Fig.: [1]

Fig. : [2]

Historical introduction1930 Neutrino1931 Positron,

Neutron 1932 1933 1934 1935 1936 1937 Muon1938 1939 1940

TU Dresden Particles of the Standard Model Sophie Koßagk

1945 1946 1947 Pion1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 quantum electrodynamics

(QED) W+, W- Boson

Historical introduction1960 1961 1962 1963 1964 idea of Quarks1965 1966 1967 prediction of Higgs1968 1969 1970 1971 1972 1973 quantum chromodynamics

(QCD)1974

TU Dresden Particles of the Standard Model Sophie Koßagk

Fig. : [3]

Definition The Standard Model of particle physics is a

theory concerning the electromagnetic, weak, and strong nuclear interactions, which mediate the dynamics of the known subatomic particles.

TU Dresden Particles of the Standard Model Sophie Koßagk

Particle classification

TU Dresden Particles of the Standard Model Sophie Koßagk

half-integer spin (1/2, 3/2, …)

integer spin (1, 2, 3, …)

Fig. : [4]

Fermions

TU Dresden Particles of the Standard Model Sophie Koßagk

Quarksfractional electric

chargeColour chargeColour confinementBaryons (three

quarks) and Mesons (two quarks) have an integer electric charge and they are colour neutral

TU Dresden Particles of the Standard Model Sophie Koßagk

Fig.: [5]

Fig. : [6]

Leptons

do not carry colour chargeAre not influence by strong

forceElectron, muon, tau are

single negative chargedNeutrinos has no charge

TU Dresden Particles of the Standard Model Sophie Koßagk

Fundamental interactionGauge bosons

TU Dresden Particles of the Standard Model Sophie Koßagk

Fig. : [7]

Gauge bosons, Higgs

TU Dresden Particles of the Standard Model Sophie Koßagk

Gravitation

Weak Electro-magnetic

Strong

Carried by

(Graviton) W+, W-, Z0 bosons

Photon Gluons

Acts on All Quarks and Leptons

Quarks and charged

Leptons and W+, W-

Quarks and Gluons

intensity

6 10∙ -39 10-6 1/137 1

Range [m]

Infinite 10-18 Infinite 10-15

Fig. : [8]

Higgs

SummaryType Generatio

nAntiparticle

Colours Total

Quarks 2 3 Pair 3 36

Leptons 2 3 Pair - 12

Gluons 1 1 Own 8 8

W 1 1 Pair - 2

Z 1 1 Own - 1

Photon 1 1 Own - 1

Higgs 1 1 Own - 1

Total 61

TU Dresden Particles of the Standard Model Sophie Koßagk

Sources[1]–[5], [7] particleadventure.org

[6]http://en.wikipedia.org/wiki/Color_confinement

[8] http://vimeo.com/41038445

http://hyperphysics.phy-astr.gsu.edu/hbase/ hframe.html

en.wikipedia.orgTU Dresden Particles of the Standard Model Sophie

Koßagk

Thank you for listening

TU Dresden Particles of the Standard Model Sophie Koßagk

Sources[1]–[5], [7] particleadventure.org

[6]http://en.wikipedia.org/wiki/Color_confinement

[8] http://vimeo.com/41038445

http://hyperphysics.phy-astr.gsu.edu/hbase/ hframe.html

en.wikipedia.orgTU Dresden Particles of the Standard Model Sophie

Koßagk