higgs -partiklen
DESCRIPTION
Higgs -partiklen. Hans Fynbo, Institut for Fysik og Astronomi, Aarhus Universitet ( fynbo @ phys.au.dk ). 4. Juli 2012. Program. 1. time : Hvad er Higgs -partiklen og hvordan blev den fundet? (ingen matematik) 2. time Hvorfor er Higgs -partiklen nødvendig? - PowerPoint PPT PresentationTRANSCRIPT
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4. Juli 2012
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Program
• 1. time : – Hvad er Higgs-partiklen og hvordan blev den
fundet? (ingen matematik)
• 2. time– Hvorfor er Higgs-partiklen nødvendig?– Higgs-partiklen og drømme om en endelig teori.(mere matematisk).
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Partikler
atom
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atom
Elektronq = -1
Elementarpartikel
Partikler
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atom
atomkerne
Elektronq = -1
Partikler
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atom
atomkerne
Elektronq = -1
Neutronq = 0
Protonq = 1
Partikler
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atom
atomkerne
Neutronq = 0
Protonq = 1
down quark q = - 1/3
up quarkq = + 2/3
Elektronq = -1
Partikler
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Partikler
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Partikler
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Partikler
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Henfalder lynhurtigt !
Partikler
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gluon
To salgs kernekræfter:
”Svage” og ”Stærke”
Virker kun inde i kernen
Gluonen er den kraftoverførende partikel for den stærke kernekraftW+, W- , Z0 er de kraftoverførende partikler for den svage kernekraft
Kræfter som partikler
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atom
neutron
n → p+ + e- + νe
u ud dd → u + e- + νe
d → u + W-
e- + νe
-
Kraftbærende partikler
-
-
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Partikler
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Partikler
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Partiklerhar en masse ?
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Endnu et felt:
Higgs Feltet, der er overalt
Tilhørende Higgs partikel
Peter Higgs
Partiklerhar en masse !
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Film fra http://www.atlas.ch/multimedia/#origin-of-mass
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Higgs feltet, ϕ
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Let partikel
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Noget tungere partikel
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Tung partikel
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Higgs partiklen, H
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Partiklerhar en masse !
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e 0,0005
p 1
γ 0
H 126
Partiklerhar en masse !
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Hvordan laverman en Higgs?
Rolf Heuer generaldirektør CERN
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E = mc2
Hvordan laverman en Higgs?
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E = mc2 = m0c2 + Δm c2
bevægelsesenergi
Hvordan laverman en Higgs?
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Hvordan laverman en Higgs?
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?
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?
~
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~
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~
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Hvert element kan kun give en begrænset energitilvækst….
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Hvordan laverman en Higgs?
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Hvordan laverman en Higgs?
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Hvordan laverman en Higgs?
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Hvordan laverman en Higgs?
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Hvordan laverman en Higgs?
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Hvordan laverman en Higgs?
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3.5 TeV energi i hver proton7 TeV energi i en kollision7 TeV svarer til 7000 nye protonerEller 1.300.000 nye elektroner
Hvordan finderman en Higgs?
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Film fra http://www.atlas.ch/multimedia/#di-jet-event
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Hvordan finderman en Higgs?
45 m
25 m
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http://www.atlas.ch/multimedia/#atlas-built-1-minute
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7,000 tons.
Hvordan finderman en Higgs?
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http://www.atlas.ch/multimedia/#how-atlas-detects-particles
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H → γγ
Hvordan finderman en Higgs?
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Hvordan finderman en Higgs?
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produktion af Higgs-partiklen?
Higgs produktion
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Henfald af Higgs-partiklen?
Higgs henfald forgreningsforhold
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Direkte evidens for Higgs (juli 2012)
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Direkte evidens for Higgs (juli 2012)
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StandardModellen
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Hvad kostede det at finde Higgs?
Forbes Magazine: 13,25 billion dollar
80 milliarder kroner
Danmarks bidrag til CERN 1.8%
1,4 milliarder
300 kr pr Dansker