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Hadron Physics at FAIRFacility for Antiproton and Ion Research
Volker MetagII. Physikalisches InstitutUniversity of Giessen, Germany
• Facility Layout and Characteristics• Scientific Areas and Goals• Hadron Physics• Project Organization and Time Schedule
SIS 100
HESR
SIS 300
CBM
PP Super-FRS
Atom. Phys.
GSI as of today
Elec.CoolerPANDA
CR+RESR
NESRFLAIR
FAIRFacility for Antiprotonand Ion Research
FAIR: Facility for Antiproton and Ion ResearchFAIR: Facility for Antiproton and Ion Research
Primary Beams
•1012/s; 1.5 GeV/u; 238U28+
•Factor 100-1000 over present in intensity•2(4)x1013/s 30 GeV protons•1010/s 238U73+ up to 25 (- 35) GeV/u
Secondary Beams
•Broad range of radioactive beams up to1.5 - 2 GeV/u; up to factor 10 000 inintensity over present
•Antiprotons 3 - 30 GeV
Storage and Cooler Rings
•Radioactive beams•e – A collider•1011 stored and cooled 0.8 - 14.5GeV antiprotons
•Cooled beams•Rapidly cycling superconducting magnets
Key Technical Features
research areas:FAIRFacility for Antiproton and Ion Research • Nuclear Structure Physics and
Nuclear Astrophysics with Radioactive Ion-Beams
• Hadron Physics with p - Beams
• Physics of Nuclear Matter withRelativistic Nuclear Collisions
• Plasma Physics with highly bunched Laser- and Ion-Beams
• Atomic Physics and Applied Science
• Accelerator Physics
Structure and Dynamics of Nuclei – Radioactive Beams at FAIRStructure and Dynamics of Nuclei – Radioactive Beams at FAIR
Proton-rich nuclei•Proton radioactivity•Proton - neutron pairing•Isospin symmetry•Tests of standard model
and symmetries•Nucleosynthesis
Neutron-rich nuclei•Neutron drip line•Shell quenching•Skins and halos•Loosley bound systems•Soft collective modes•Nucleosynthesis
Superheavy elements•Shell stabilization•Long-lived nuclei
Nuclear Astrophysics at FAIR: the origin of elementsNuclear Astrophysics at FAIR: the origin of elementsP
roto
n nu
mbe
r Z
Accreting white dwarf
Nova Cygni 1992
Sun
Elements in our solar system
Neutron number N
• nucleosynthesis of heavy elementsin explosive stellar events proceedsalong chains of unstable nuclei
beams of unstable nuclei provide:• masses, decay-, reaction rates• stellar conditions in terrestrial
laboratories (highly charged ions)
improved modelling ofsynthesis process
Production of exotic nuclear beams by fragmentationProduction of exotic nuclear beams by fragmentation
1GeV/u U + H
About 1000 nuclear residues identified
A/Z-resolution ~10-3
1 AGeV U + H ⇒ X
Nuclear Matter and the Quark-Gluon Plasma –Relativistic Nuclear Beams at FAIR
Nuclear Matter and the Quark-Gluon Plasma –Relativistic Nuclear Beams at FAIR
study of compressed baryonic / strange matter in nucleus-nucleuscollisions up to laboratory energies of 35 AGeV
important probe: dilepton pairs
QCD- phase diagram
Physics of Dense Plasmas and Bulk Matter at FAIRPhysics of Dense Plasmas and Bulk Matter at FAIR
SIS 18
Ion BeamHeating Jupiter
Sun Surface
Magnetic Fusion
solid statedensity
Tem
pera
ture
[eV
]
Density [cm-3]
LaserHeating
PHELIX
Ideal plasmas
Strongly coupled
plasmas
Sun Core
InertialCofinement
Fusion
• Properties of high density plasmas• Phase transitions and equation of state• Laser – ion interactions with and in plasmas
Transition from the perturbative to the non-perturbative regimeof Quantum Chromodynamics (QCD)
Transition from the perturbative to the non-perturbative regimeof Quantum Chromodynamics (QCD)
q
q q
qgluon (g)
quarks, gluonsone gluon exchange
perturbativeQCD: αS << 1
non-perturbativeQCD: αS ≤ 1
hadrons:baryons, mesonsmodels, lattice QCD
Challenging problems in non-perturbative QCDChallenging problems in non-perturbative QCD
• Why are quarks confined within hadrons?• How are hadrons constructed from their constituents?•What is the relation of parton degrees of freedom and thelow energy structure of hadrons?
• What is the origin of hadron masses?• How are hadrons modified when embedded in nuclei?• Do glueballs (ggg) and hybrids (qqg) exist?
⇒ New experimental approach: antiproton beams up to 15 GeV/c
High Energy Storage Ring (HESR) and Detector ConceptHigh Energy Storage Ring (HESR) and Detector Concept
510410δp/p
cGeV151.5pp;1s2cm32102L
−−−=
−=−−⋅=
electron cooler
universal detectorPANDA
p-injection
circumference 442 m
max. bendingpower 50 Tm
HESR
p
detector features:measurement and identification ofγ, e± , µ±, π±, K±, p, phigh rate capabilityfast trigger scheme
Physics program at the High Energy Storage Ring (HESR)Physics program at the High Energy Storage Ring (HESR)
J/ψ spectroscopy confinement
hidden and open charm in nuclei
glueballs (ggg) hybrids (ccg)
strange and charmed baryons
in nuclear field
fundamental symmetries:
p in traps (FLAIR)
inverted deeply virtual Compton scattering
CP-violation (D/Λ - sector)
charmonium spectroscopy: testing confinementcharmonium spectroscopy: testing confinement
unique window to study interplay of perturbative and non-perturbative effects
• energy levels, widths, decay modes⇒ details of QQ interaction
non-perturbative effects
open problems in J/Ψ spectroscopy:
• search for ηc'-state • confirm 1P1-state • measure transition rates • identify states above DD threshold
advantage pp: direct formation of all states
comparison e+e- versus ppcomparison e+e- versus ppCrystall Ball
e+e- interactions: only 1-- states formed other states populated in secondary decays (moderate mass resolution)
production of χ1,2
'ee ψ→−+
2,1γχ
ψγγ /J−+γγ ee
pp reactions: all states directly formed (very good mass resolution)
formation of χ1,2
ψγ /J−+γ ee
2,1pp χ→
E 760 (Fermilab)
σm (beam) = 0.5 MeV
GlueballsGlueballs
characteristic feature of QCD: self-interaction among gluons
predicted masses: 1.5 - 5.0 GeV/c2
candidate: f0(1500): 0++; Γ=110MeV no flavour blind decay mixing with neighbouring scalar meson states
→ search for higher lying glueball states
mixing with (qq) and (QQ) excluded for exotic states (e.g., JPC = 2+-)
→ less mixing, width ≤ 100 MeVonly ≈10 (QQ) states in 3 – 4 GeV/c2
C.J. Morningstar and M. Peardon,PRD60 (1999) 034 509
decay mode: 2+-→Φη ( l = 2)
Hybrids Hybrids )qgq( *
predicted masses: 3.9 - 4.5 GeV/c2
lowest state: JPC = 1–+ (exotic)width: could be narrow (LGT: ≈ 10 MeV)preferred decays:(ccg) → (cc) + X
light quark hybrids:
charmed hybrids:
candidates:JPC = 1–+ at 1.4 GeV/c2 → ηπ–
JPC = 1–+ at 1.6 GeV/c2 → ρ0π–
e.g. 1-+ → χc + (ππ)l=0 (C. Michael, hep-lat/0207017)J/ψ + γ
e+e-
synergy effect: parallel operation of physics programssynergy effect: parallel operation of physics programs
FAIR and its members
FAIR ProjectFrance
FZ-Jülich
Russia
INDIAItalyResources, Finances, Manpower and Hardware Contributions
Demands of the Project towards partners
UK
SwedenChina
GSI
FAIR Council(Representatives of Institutions)
France FZ-Jülich RussiaFinnland Spain UKSwedenGSI
Project Management
Italy
Finnland
Obs. EU
Obs. China
Obs. India
Observ. USA