Hierarchies of MatterHierarchies of Matter

matter

crystal

atom

atomic nucleus

nucleon

quarks

10-9 m

10-10 m

10-14 m

10-15 m

< 10-18 m

(macroscopic)

• confinement

• hadron masses

general features: constituents observed as

free particles

ii

m m

nucleon: constituents (quarks) not observed as free particles

ii

m m

Outstanding Issues in Hadron PhysicsOutstanding Issues in Hadron Physics

• How are hadrons (baryons and mesons) built from quarks and gluons?

• Can we quantitatively account for the confinement of quarks and gluons inside hadrons?

• What determines the nucleon mass?

e.g., nucleon = complex many-body system of quarks and gluons

• J/ spectroscopy confinement

• glueballs (ggg) and hybrids (ccg)

• hidden and open charm mesons in nuclei

• hypernuclei

Physics program at the HESRPhysics program at the HESR

Further possibilities:

• Inverted Deeply Virtual Compton Scattering

• CP-violation (D/-sector)

• fundamental symmetries; p in traps

QCD systems to be studied at HESRQCD systems to be studied at HESR

High Energy Storage Ring and Detector ConceptHigh Energy Storage Ring and Detector Concept

L = 2·1032 cm-2s-1 ; p = 1.5 – 15 GeV/c

p

p

Why antiprotons?Why antiprotons?

• large at low momentum transfer; important for in-medium

"implantation" of hadrons: study of in-medium effects

s

• high beam quality by stochastic and electron cooling micro vertex trigger for D-meson physics

• high resolution spectroscopy with p-beams in formation experiments: E,Ebeam

• high yields in pp of gluonic excitations (glueballs, hybrids)

• event tagging by pairwise (particle, particle) production, e.g. pp

International CompetitionInternational Competition

CLEOc, BES, JLab (HALL D), JHF

topic HESR Competition

confinementall cc-states with high resolution CLEOc: only 1 -- states

gluonic excitations

heavy glueballs, charmed hybrids (ccg)

CLEOc: light glueballs JLab: light hybrids

nuclear interactions

D-mass shift J/y - absorption

hypernuclei and -hypernuclei

open charm physics

rare D-decays, CP CLEOc: CP, D-decays

n, K-beams JHF

The HESR - CommunityThe HESR - Community

T. Barnes D.

Bettoni R.Calabrese W. Cassing M. Düren S. Ganzhur O.Hartmann V. Hejny P. Kienle H. Koch W. Kühn U.Lynen V. Metag H. Orth S. Paul K.

Peters J.Pochodzalla J. Ritman L. Schmitt C.Schwarz K. Seth W.Weise U. Wiedner

Proposal Contributors Participating Institutions Proposal Supporters

G. Bali I.

Bigi T.

Bressani T. Ericson D.Hilscher J. Jastrzebski J. Kisiel W.Kluge M. Locher J.-M.Richard D.O. Riska G.

Rosner T.Thomas N. Tornquist

Ruhr - University Bochum Rheinische Friedrich - Wilhelms - University Bonn INFN, National Laboratory Catania, Italy GSI Darmstadt Technical University Darmstadt Northwestern University, Evanston, USA University of Ferrara, Italy Johann Wolfgang Goethe University Frankfurt Justus - Liebig - University Giessen Ruprecht - Karls - University Heidelberg Forschungszentrun Jülich Jagiellonian University Krakow INFN, National Laboratory Legnaro, Italy Johannes Gutenberg University Mainz Westfälische Wilhelms - University Münster Ludwig - Maximilians - University Munich Technical University Munich University of Torino, Italy Uppsala University, Sweden Warsaw University, Poland

SummarySummary

Antiprotons in the HESR will ...

... provide a broad and challenging research program (cc), (ccg), (ggg), mD, A, IDVCS, CP, CPT

... allow GSI to play a leading role in exploring long distance (non-perturbative) QCD

... be an integral part of GSI's efforts to unravel all facets of the strong interaction and of hadronic matter (p, AA-collisions, exotic nuclei)