partículas elementares (2009/2010) - ulisboa · partículas elementares (2009/2010) mário pimenta...
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Partculas Elementares (2009/2010)
Mrio Pimenta Lisboa, 9/2009
pimenta@lip.pt
Relatividade Restrita
A Relatividade Restrita
Intervalo de espao-tempo
Quadrivectores
E=mc2
It followed from the special theory of relativity that mass andenergy are both but different manifestations of the same thing -- asomewhat unfamiliar conception for the average mind. Furthermore,the equation E is equal to m c-squared, in which energy is put equalto mass, multiplied by the square of the velocity of light, showedthat very small amounts of mass may be converted into a very largeamount of energy and vice versa. The mass and energy were in factequivalent, according to the formula mentioned before. This wasdemonstrated by Cockcroft and Walton in 1932, experimentally.
Fission and fusion
Binding energy
Fission the splitting of an heavy atom
Fusion the fusing of light atoms into heavy atom
mass Kinetic Energy
Particle Physics
Collides high energyparticles and observeswhat comes out !
An example: the LEP @CERN
Kinetic Energy mass
DELPHI- the first WW event
Energia e momento
u (p1 p4)2 s + t + u = m12 + m22 + m32 + m42
Variveis de Mandelstam
Relatividade e partculas (I)
Relatividade e partculas (II)
Relatividade e partculas (III)
Relatividade e partculas (IV)
Slide Number 1Slide Number 2Slide Number 3Slide Number 4E=mc2Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12Slide Number 13
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