mitglied der helmholtz-gemeinschaft from hadron physics to the precision frontier a very short...
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![Page 1: Mitglied der Helmholtz-Gemeinschaft From Hadron Physics to the Precision Frontier A Very Short Introduction August 6, 2012 | Hans Ströher (Forschungszentrum](https://reader033.vdocuments.net/reader033/viewer/2022061304/5513df4b5503463a298b57c0/html5/thumbnails/1.jpg)
Mit
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Helm
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From Hadron Physicsto the Precision Frontier
A Very Short Introduction
August 6, 2012 | Hans Ströher (Forschungszentrum Jülich)
GGSWBS´12 (Tbilisi, August 6 – 10, 2012)
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10. April 2023 Institut für Kernphysik (IKP) Folie 2
Introduction – Structure of Matter
The different layers of matter constituents
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10. April 2023 Institut für Kernphysik (IKP) Folie 3
Introduction – Structure of Matter
A definition of „hadron physics“
Hadron physicsis the part of
structure-of-matter physics that deals with
strongly interacting particles at the level of
quarks and gluons
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10. April 2023 Institut für Kernphysik (IKP) Folie 4
Introduction – Standard Model (I)
The new „Periodic Table“: matter building blocks and force carriers
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10. April 2023 Institut für Kernphysik (IKP) Folie 5
Introduction – Standard Model (II)
Last missing piece: Higgs-boson (most probably discovered at CERN)
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10. April 2023 Institut für Kernphysik (IKP) Folie 6
Introduction – Ordinary Matter
Atom Nucleus
… is comprised of electrons and u-, d-quarks
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10. April 2023 Institut für Kernphysik (IKP) Folie 7
Introduction – Ordinary Matter
The diversity of manifestations of matter
Limited by „radioactivity“
Chemical elements („Periodic Table“) „Chart of Nuclide“
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10. April 2023 Institut für Kernphysik (IKP) Folie 8
Introduction – Non-ordinary Matter
… (particles) is (are) produced in energetic collisions
Cosmic rays
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10. April 2023 Institut für Kernphysik (IKP) Folie 9
Introduction – Non-ordinary Matter
2012 marks 100th Anniversary of Cosmic Ray Discovery by Victor Hess
Cosmic rays
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10. April 2023 Institut für Kernphysik (IKP) Folie 10
Introduction – Non-ordinary Matter
Accelerators
… (particles) is (are) produced in energetic collisions
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10. April 2023 Institut für Kernphysik (IKP) Folie 11
Hadron Physics – Unsolved Questions
How does Nature make Hadrons ?
No free quarks“Confinement”
Mass of hadrons“Mass without mass”
Changes in medium?“Restoration of Chiral Symmetry”
Hadronic States Enigma of mesons and baryons;
resonances;existence of exotics?
QCD vacuum
Force independent of distance
Valence quark
Meson
Baryon
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10. April 2023 Institut für Kernphysik (IKP) Folie 12
Hadron Physics – Unsolved Questions
How does Nature make Hadrons ?
Hadronic interaction? Remnant of quark- quark interaction
Composite nucleon
Spin of composite particles (e.g. proton)?
“Spin Crisis (Puzzle)”
Hadrons in matterColor Transparency,Bound States,…
(…)
½ = 3(½)q
exotic nuclei
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10. April 2023 Institut für Kernphysik (IKP) Folie 13
Hadron Physics – Unsolved Questions
Structure of the nucleon Non- (+,-) symmetric charge distribution?
Nucleon charge rests in quarks
From Hadron Physics to the Precision Frontier
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10. April 2023 Institut für Kernphysik (IKP) Folie 14
Precision Frontier – New Physics
Electric dipole moment (EDM) d
Structure of the nucleon Non- (+,-) symmetric charge distribution?
… would have profound implications: d = 0 violates „time-reversal“ symmetry
Nucleon charge rests in quarks
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10. April 2023 Institut für Kernphysik (IKP) Folie 15
Assertion: Universe „started“ with equal amounts of matter and antimatter !
Early Universe
BigBang
Precision Frontier – EDM Physics Case
Matter Anti-matter
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10. April 2023 Institut für Kernphysik (IKP) Folie 16
Very soon, a slight asymmetry developed (CP- / T-violation)
Early Universe
Matter Anti-matter
BigBang
Precision Frontier – EDM Physics Case
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10. April 2023 Institut für Kernphysik (IKP) Folie 17
All the anti-matter annihilated with matter
Early Universe
Matter Anti-matter
BigBang
Precision Frontier – EDM Physics Case
Matteranti-matterannihilation
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10. April 2023 Institut für Kernphysik (IKP) Folie 18
Now, only matter is left over! Why do we exist at all?
Early Universe
Today
Matter Anti-matter
Matteranti-matterannihilation
BigBang
Precision Frontier – EDM Physics Case
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10. April 2023 Institut für Kernphysik (IKP) Folie 19
A nucleon is very small (~ 1 femtometer)
Nucleon Earth
Precision Frontier – EDM Challenge
10
-15 m
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10. April 2023 Institut für Kernphysik (IKP) Folie 20
An EDM is VEEEEEE … EEERY small !!
dexp < 10-27 [e cm]separation ~ size of a hair
expa
nd
expand
Nucleon Earth
Precision Frontier – EDM Challenge
10
-15 m
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10. April 2023 Institut für Kernphysik (IKP) Folie 21
Ongoing searches: n, e, µ, atoms … Great physics beyond „SM“
Precision Frontier – EDMs
Neutron EDM
Status and plans:
Most likely exp. limit
for neutron
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10. April 2023 Institut für Kernphysik (IKP) Folie 22
Idea: polarized beams interacting with E-field tilt of polarization
JEDIJülich Electric Dipole Moment Investigations
Precision Frontier – EDM Approach
New: A dedicated precision storage ring for p, d:
Observation of out-of-plane polarization:
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10. April 2023 Institut für Kernphysik (IKP) Folie 23
A first grade technological and scientific challenge !
Precision Frontier – EDM Storage Ring
Ring concept: 2 counter-rotating beams …
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10. April 2023 Institut für Kernphysik (IKP) Folie 24
A first grade technological and scientific challenge !
Precision Frontier – EDM Storage Ring
Ring concept: 2 counter-rotating beams …
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10. April 2023 Institut für Kernphysik (IKP) Folie 25
Long-term project: needs expertise, time, persistance … and money !
Precision Frontier – EDMs
JEDI at Forschungszentrum Jülich
Physics: a „must-do“ experiment
R&D, tests at COSY … the „best place on earth“ to pursue this project
Cooperation with labs in Europe (Ferrara, …), US (BNL, Cornell, IUCF, …) and elsewhere (Georgia, Russia, …) srEDM Network
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10. April 2023 Institut für Kernphysik (IKP) Folie 26
Long-term project: needs expertise, time, persistance … and money !
Precision Frontier – EDMs
JEDI at Forschungszentrum Jülich
Physics: a „must-do“ experiment
R&D, tests at COSY … the „best place on earth“ to pursue this project
Cooperation with labs in Europe (Ferrara, …), US (BNL, Cornell, IUCF, …) and elsewhere (Georgia, Russia, …) srEDM Network
Spokespersons:
J.Pretz(RWTH)
F.Rathmann(FZJ, IKP-2)
A.Lehrach(FZJ, IKP-4)
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10. April 2023 Institut für Kernphysik (IKP) Folie 27
Possibly higher sensitivity than neutron Discovery potential !
Precision Frontier – EDMs
pEDMdEDM indirect
exp. limitfor proton
Status and plans:
Neutron EDM
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10. April 2023 Institut für Kernphysik (IKP) Folie 28
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