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FORSCHUNGSBERICHT 1996-1998


 

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Institut für Theoretische Kernphysik

Allgemeine Angaben:
Nußallee 14-16, 53115 Bonn, Telefon: 0228 / 73-2365, Telefax: 0228 / 73-3728, eMail: metsch@itkp.uni-bonn.de, WWW: http://www.itkp.uni-bonn.de

Hauptamtliche Professoren
Prof. Dr. Max-G. Huber
Prof. Dr. Ulf-G. Meißner
Prof. Dr. Herbert R. Petry
Prof. Dr. Dieter Schütte

Wissenschaftliches Personal
Universitätsstellen
Dipl. Phys. Wolfgang Giersche
Dipl. Phys. Andre Kofaldt
Dipl. Phys. Matthias Koll
Priv. Doz. Dr. Bernard Ch. Metsch
Dr. Jens Nitschkowski
Dipl. Phys. Ralf Ricken
Dipl. Phys. Christian Weichmann
Dipl. Phys. Vera Wethkamp
Dipl. Phys. Andreas Wichmann

Drittmittelstellen
Dipl. Phys. Bugra Borasoy (DFG)
Dipl. Phys. Volker Keiner (DFG (GK))
Dipl. Phys. Klaus Kretzschmar (DFG (GK))
Dipl. Phys. Ulrich Löring (DFG (GK))
Dipl. Phys. Guido Müller (DFG)
Dipl. Phys. Sven Steininger (DFG (GK))

Stipendiaten
Dr. Steven Bass (Humboldtfellow)
Prof. Dr. Vladimir Gribov (Humboldtpreisträger)
Prof. Dr. Charles Horowitz (DFG)
Luis Prado (DAAD)

Forschungsschwerpunkte
Chirale Störungstheorie
(Borasoy, Meißner, Müller, Steininger)

Quarkmodelle der Hadronen
(Giersche, Huber, Kofaldt, Koll, Kretzschmar, Löring, Metsch, Petry, Prado, Ricken)

Vielteilchenmethoden in Eichtheorien
(Nitschkowski, Schütte, Weichmann, Wethkamp, Wichmann)

Besondere Forschungsförderung
Graduiertenkolleg "Die Erforschung subnuklearer Strukturen der Materie"
(Huber, Metsch, Petry, DFG)

Chirale Invarianz und Quarkmodelle
(Meißner, Metsch, Petry, DFG)

Isospin-Symmetrie im Pion-Nukleon-System
(Meißner, Schütte, DFG)

Perturbative und nicht-perturbative Aspekte der tief-inelastischen Streuung
(Meißner, DFG)

Theorie der Photoreaktionen am Nukleon
(Metsch, Petry, DFG)

Erweiterung von Lüscher's Yang-Mills Theorie
(Schütte, DFG)

Veröffentlichungen
Anisovich V V, Metsch B C, Petry H R, Sarantsev A V:
Confined quarks and quark-hadron duality in meson physics
Phys. Part. Nucl. 27 (1996) 1

Bass S D, Brisudova M M, De Roeck A:
The Drell-Hearn-Gerasimov Sum Rule at Polarized HERA
in: Proceedings of the Workshop on Physics with polarized protons at HERA, 188-193, 690-695, Hamburg (1997)

Bass S D, Schütte D:
The Role of the Pion Cloud in the Interpretation of the Valence Light Cone Wave Function of the Nucleon
Z. Phys. A357 (1997) 85

Bass S D:
The final state hadrons in polarised deep inelastic scattering
Phys.Lett. B367 (1996) 33

Bass S D:
The Drell-Hearn-Gerasimov Sum Rule in QCD
Mod. Phys. Lett. A12 (1997) 1051

Bass, S D, Thomas. A W:
A New Hypothesis on the Origin of the Three Generations
Mod.Phys.Lett. A11 (1996) 339

Beinker, M W, Metsch, B C, Petry, H R:
Bound q²-(anti-q)² states in a constituent quark model
J. Phys. G 22 (1996) 1151

Bernard V, Blin A, Hiller B, Ivanov Y P, Osipov A A, Meißner U-G:
Pion Observables in the Extended NJL Model with Vector and Axial-Vector Mesons
Ann. Phys. (NY) 249 (1996) 499

Bernard V, Kaiser N, Meißner U-G:
Chiral corrections to the Kroll Ruderman theorem
Phys. Lett. B383 (1996) 116

Bernard V, Kaiser N, Meißner U-G:
Chiral symmetry and the reaction gamma p -> pi p
Phys. Lett. B378 (1996) 337

Bernard V, Kaiser N, Meißner U-G:
Double neutron pionproduction at threshold
Phys. Lett. B382 (1996) 19

Bernard V, Kaiser N, Meißner U-G:
Improved description of threshold pion electroproduction in chiral perturbation theory
Nucl. Phys. A607 (1996) 379

Bernard V, Kaiser N, Meißner U-G:
Neutral Pion Photoproduction off Nucleons Revisisted
Z. Phys. C70 (1996) 483

Bernard V, Kaiser N, Meißner U-G:
Nucleon electroweak form factors: Analysis of their spectral functions
Nucl. Phys. A611 (1996) 429

Bernard V, Kaiser N, Meißner U-G:
On the analysis of the pion-nucleon sigma-term: The size of the remainder at the Cheng--Dashen point
Phys. Lett. B389 (1996) 144

Borasoy B, Kramer W, Schütte D:
Application of Palumbo's new lattice Yang Mills theory
Phys. Rev D53 (1996) 2599

Borasoy B, Meißner U-G:
Baryon masses and pion-nucleon sigma-term to second order in the quark masses
Phys.Lett. B365 (1996) 285

Borasoy B, Meißner U-G:
Chiral Lagrangians for Baryons coupled to massive Spin-1 Fields
Int. J. Mod. Phys. A11 (1996) 5183

Giersche W I, Münz C R:
K Form Factor and Charge Radius in a Covariant Salpeter Model
Phys. Rev C53 (1996) 2554

Hamer C J, Sheppeard M, Zheng Weihong, Schütte D:
Universality for SU(2) Yang-Mills theory in (2+1) Dimensions
Phys. Rev D54 (1996) 2395

Hammer H-W, Drechsel D, Meißner U-G:
Dispersion-theoretical analysis of the nucleon electromagnetic form factors: Inclusion of the time-like data
Phys. Lett. B385 (1996) 343

Hammer H-W, Meißner U-G, Drechsel D:
The Strangeness Radius and Magnetic Moment of the Nucleon Revisited
Phys.Lett. B367 (1996) 323

Keiner V:
A covariant diquark-quark-model of the nucleon in the Salpeter approach
Phys. Rev. C54 (1996) 3232

Keiner V:
Electromagnetic form factors of the nucleon in a covariant diquark model
Z. Phys. A354} (1996) 87

Keiner V:
Nucleon and Delta in a covariant quark-diquark model
in: M. Anselmino, E. Predazzi (Hrsg.): Proceedings of the International Workshop on Diquarks and Other Models of Compositeness: Diquarks III, World Scientific, Singapore, 1998.

Liu J, Luo X-Q, Fang X, Guo S, Kröger H, Schütte D:
Method for Extracting the Glueball Wave Function
Nucl. Phys. B (Proc. Suppl.) 63A-C (1998) 257

Luo X Q, Guo S-H, Kröger H, Schütte D:
Improving the Lattice QCD Hamiltonian
Nucl. Phys. B (Proc. Suppl.) 63A-C (1998) 931

Mergell P, Meißner U-G, Drechsel D:
Dispersion-Theoretical Analysis of the Nucleon Electromagnetic Form factors
Nucl. Phys. A596 (1996) 367

Metsch B C, Petry H R:
The Quark Structure of Light Mesons
Acta Phys. Pol. B27 (1996) 3307

Metsch B C:
A relativistic quark model of baryons
in: S.U. Chung, H. Willutzki (Hrsg.): Proceedings of the 7th International Conference on Hadron Spectroscopy, AIP Conference Proceedings 432 (1998) 557

Metsch B C:
Quark structure of light mesons
in: S.U. Chung, H. Willutzki (Hrsg.): Proceedings of the 7th International Conference on Hadron Spectroscopy, AIP Conference Proceedings 243 (1998) 828

Münz C R:
Two-Photon Decays of Mesons in a Relativistic Quark Model
Nucl. Phys. A609 (1996) 364

Ritter C, Metsch B C, Münz C R, Petry H R:
Instanton effects in the decay of Scalar Mesons
Phys. Lett. B380 (1996) 431

Schütte D, Zheng Wei-hong, Hamer C J:
The Coupled Cluster Method in Hamiltonian Lattice Field Theory
Phys. Rev. D55} (1997) 2974

Schütte D:
Gribov Horizons and Confinement
in: S.D. Bass, P.A.M. Guichon (Hrsg.): Proceedings of the 1st ELFE Summer Scholl on Confinement Physics, Ed. Frontieres, (1996) 237

Schütte D:
Aspects of Hamiltonian Lattice QCD
in: H.M. Fried, B. Mueller (Hrsg.): Proceedings of the 1996 Paris Workshop on Quantum Chromodynamics: Collisions, Confinement, Chaos World Scientific, Singapore (1996) 348

Schütte D:
Coupled Cluster Formulation of Lattice Hamiltonian QCD anf Maximum Momentum Eigenstates
in: Proceedings of the 8th Workshop on Light-Cone QCD and Nonperturbative Physics, Minnesota, USA (1997)

Steininger, Meißner U-G:
Kaon loops in pion photoproduction: Facts and fancy
Phys. Lett. B389 (1996) 144


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