Jonathan Bagger Atoms for Peace + 50 Beyond the Nucleus: Matter, Energy, Space and Time.
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Transcript of Jonathan Bagger Atoms for Peace + 50 Beyond the Nucleus: Matter, Energy, Space and Time.
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Jonathan Bagger
Atoms for Peace + 50
Beyond the Nucleus:
Matter, Energy, Space and Time
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Periodic Table of Elements
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Brookhaven Cosmotron
19533.3 GeV protons
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Subatomic Particles
u1969 SLAC
c1974 SLAC
t1995 FNAL
1895
d1969 SLAC
s1969 SLAC
b1977 FNAL
W,Z1983 CERN
e1897
1937
1976 SLAC
g1979 DESY
e
1956 SRTC
1962 BNL
2000 FNAL
h
Mat
ter
For
ces
BNL
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Subatomic Particles
u
up
c
charm
t
top
photon
d
down
s
strange
b
bottom
W,Z
weak
e
electron
mu
tau
g
gluon
e
neutrino
neutrino
neutrino
h
graviton
Mat
ter
For
ces
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Fermilab Tevatron
19832,000 GeV proton-antiproton
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Top Quark Discovery
FNAL, 1995
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Particle Physics Today
Today, we stand at a crossroads in the history of science …
After 50 years, we have reached the point where we can ask bold new questions about the structure of matter, energy, space and time
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Particle Physics Today
We can look forward ….
“.... like stout Cortez, when with eagle eyesHe star’d at the Pacific – and all his menLook’d at each other with a wild surmise –Silent, upon a peak in Darien.”
John Keats
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String Theory
String theory predicts extra dimensions
•Where are they?
•How many are there?
•How are they hidden?
•What are their shapes and sizes?
Such questions are moving from science fiction to science fact
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Cosmology
Dark Energy73%
Dark Matter23%
Quarks and Leptons
4%
Most of the energy of the universe is dark
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Cosmology
What is the Dark Matter and Dark Energy?
“There are more things in heaven and earth, Horatio, / Than are dreamt of in your philosophy.”
William Shakespeare
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CERN LHC
2007
14,000 GeV proton-proton
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Linear Collider
2015 (?)
500-1,000 GeV electron-positron
A Dark Matter Microscope
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Atoms for Peace
President Dwight D. Eisenhower
“I know that the American people share my deep belief that if a danger exists in the world, it is a danger shared by all; and equally, that if hope exists in the mind of one nation, that hope should be shared by all. ... [The] United States pledges before you ... to devote its entire heart and mind to finding the way by which the miraculous inventiveness of man shall not be dedicated to his death, but consecrated to his life.”
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Atoms for Peace
International flags at Fermilab