Symposium on

The Gerasimov-Drell-Hearn Sum Rule

and the Spin Structure in the Nucleon Resonance Region

Mainz, 14-17 June 2000

PROGRAM as of 29/05/00 -

Wednesday, June 14

Morning: Introduction

9:00 Welcome

Chair: N. d'Hose (CEA Saclay)

9:10 Introduction

9:50 S. Gerasimov (Dubna) "Quark-hadron duality and photoabsorption sum rules"

10:30 - Coffee -

Chair: K. Rith (Erlangen)

11:00 X. Ji (Maryland) "The spin structure in the resonance region"

11:40 P. Bosted (U Mass) "SLAC experiments with real and virtual polarized photons, results and future opportunities"

12:20 N. Akopov (Jerevan) "HERMES results for the generalized GDH integral"

13:00 - Lunch -

Afternoon: Theory

Chair: S. Boffi (Pavia)

14:30 U.-G. Meissner (Juelich) "The spin polarizabilities of the nucleon and related issues"

15:00 L. Tiator (Mainz) "Helicity amplitudes and sum rules for real and virtual photons"

15:30 H. Arenhoevel (Mainz) "The GDH for the deuteron"

16:00 - Coffee -

Chair: J. Arvieux (Paris-Sud)

16:30 J. Soffer (Marseille) "Sum rules and positivity constraints"

17:00 A. Schaefer (Regensburg) "Higher twist contributions to the generalized GDH sum rule"

17:30 - End of session -

 

 

Thursday, June 15

Morning: Spin Structure with Real Photons

Chair: W. Bertozzi (MIT)

9:00 P. Pedroni (Pavia) "An overview of the GDH experiment at MAMI"

9:45 I. Preobrajenski (Mainz) "Helicity dependence of single-pion photoproduction in the -region"

10:10 H. Holvoet (Gent) "Double pion photoproduction asymmetries from the GDH experiment at MAMI"

10:35 - Coffee -

Chair: B. Norum (Virginia)

11:05 M. Lang (Mainz) "Helicity dependent -production at MAMI"

11:30 K. Helbing (Erlangen) "The status of the GDH experiment at ELSA"

11:55 H. Weller (Duke University and TUNL) "Past, present and future studies of the GDH sum rule for d and 3He at TUNL"

12:20 - Lunch -

Afternoon: Parallel Sessions

Polarized Targets

Conveners: J.-P. Chen (JLab) and H.-J. Arends (Mainz)

14:00 D. Crabb (UVa) "Solid polarized targets for electron scattering experiments"

14:20 W. Meyer (Bochum) "Polarized solid targets for real and virtual scattering

experiments"

14:40 Discussion: Polarized Solid Targets

15:00 - Coffee -

15:30 B. van den Brandt (PSI) "Polarized scintillating targets at PSI"

15:50 S. Whisnant (South Carolina) "The polarized HD ice target at LEGS"

16:10 Discussion: Polarized Targets

16:30 W. Heil (Mainz) "The 3He target at MAMI"

16:50 S. Jensen (Caltech) "The spin exchange polarized 3He target at JLab"

17:10 Discussion: Polarized Targets

17:30 - End of Session -

Spin Polarizabilities

Conveners: B. Holstein (Amherst) and S. Scherer (Mainz)

14:00 F. Wissmann (Goettingen) "Compton scattering and the spin-dependent observables of the nucleon"

14:20 J. McGovern (Manchester) "Spin polarizabilities in ChPT"

14:40 T. R. Hemmert (Juelich) "Higher order spin polarizabilities in ChPT"

15:00 B. Pasquini (Trento) "Dispersion analysis of the spin polarizabilities"

15:20 G. Krein (Sao Paulo) "The role of s-wave pion production for the GDH sum rule and the spin polarizabilities"

15:40 Discussion: Spin Polarizabilities with Real Photons

16:00 - Coffee -

16:30 N. d'Hose (Saclay) "Spin polarizabilities in VCS"

16:50 M. Vanderhaeghen (Mainz) "Dispersion analysis for generalized spin polarizabilities"

17:10 Discussion: Spin Polarizabilities with Virtual Photons

17:30 - End of Session -

 

 

Friday, June 16

Morning: Spin Structure with Virtual Photons

Chair: R. van de Vyver (Gent)

9:00 Z.-E. Meziani (Temple University) "An overview of the JLab experiments in Hall A"

9:40 M. Anghinolfi (Genova) "An overview of the Hall B experiments at JLab"

10:20 R. De Vita (Genova) "Spin asymmetries in -electroproduction with CLAS"

10:45 - Coffee -

Chair: P. Bosted (Massachusetts)

11:15 P. Stoler (RPI) "Resonance helicity amplitudes for neutral meson electroproduction, and the transition to pQCD"

11:40 I. Kominis (Princeton) "The neutron and 3He spin structure function g2 in the resonance region"

12:05 A. Deur (Clermont-Ferrand) "The spin structure function g1 in the resonance region"

12:30 - Lunch -

Afternoon: Parallel Sessions

Polarized Beams

Conveners: J.-P. Chen (JLab) and H.-J. Arends (Mainz)

14:00 C. Sinclair (JLab) "The Jefferson Laboratory polarized electron source"

14:20 K. Aulenbacher (Mainz) "The polarized electron beam at MAMI"

14:40 W. Hillert (Bonn) "A new injector for polarized electrons at ELSA"

15:00 Discussion: Polarized Beams

15:15 - Coffee -

New Projects and Experiments

Conveners: S. Kuhn (ODU) and R. Van de Vyver (Gent)

15:45 T. Iwata (Nagoya) "The status of the SPring8 project"

16:15 F. Renard (Grenoble) "The GRAAL polarization program"

16:40 S. Gilad (MIT) "GDH sum rule and double-polarized pion production with real photons at JLab"

17:05 F. Garibaldi (ISS Rome) "The GDH sum rule and the spin structure of 3He and the neutron with nearly real photons"

17:30 - End of Session -

Spin Structure Functions and Sum Rules

Conveners: W. Weise (Muenchen) and K. Rith (Erlangen)

14:00 S. Kuhn (ODU) "Inclusive asymmetries and spin structure function integrals for the deuteron"

14:30 G. Piller (Muenchen) "Resonances and higher twist in polarized lepton-nucleon scattering"

15:00 C. Weiss (Bochum) "Higher twist contributions to polarized structure functions from instantons"

15:25 M. V. Polyakov (Bochum) "Flavor asymmetry of polarized antiquarks"

15:50 - Coffee -

16:20 Fan Wang (Nanjing) "Proton spin crisis or quark spin confusion"

16:45 N. Bianchi (Frascati) "The high energy contribution to the GDH sum rule"

17:10 S. Kamalov (Dubna) "Helicity amplitudes in MAID2000 and dynamical models"

17:35 A. L'vov (Moscow) "The GDH sum rule for the -resonance: a possible anomaly"

18:00 - End of Session -

 

 

Saturday, June 17

Morning: New Projects and Conclusions

Chair: G. Rosner (Glasgow)

9:00 Th. Walcher (Mainz) "MAMI C"

9:35 K. de Jager (JLab) " New projects at JLab"

10:10 J.-P. Chen (JLab) Convener's report on "Polarized beams and targets"

10:45 - Coffee -

Chair: M. Giannini (Genova)

11:15 S. Kuhn (ODU) Convener's report on "New projects and experiments"

11:50 B. Holstein (Amherst) Convener's report on "Spin polarizabilities"

12:25 W. Weise (Muenchen) Convener's report on "Spin structure functions and sum rules"

13:00 - End of Conference -