Few Body Systems and Nuclear Forces II: 8. International Conference Held in Graz, August 24–30, 1978

551 Pages·1978·12.448 MB·English

by  H. Høgaasen, P. Sorba (auth.), H. Zingl, M. Haftel, H. Zankel (eds.)

Lecture Notes
ni Physics
Edited by .J Ehlers, ,nehcn3~M .K Hepp, Zerich
.R Kippenhahn, MLinchen, .H .A WeidenmLiller, Heidelberg
and .J Zittartz, n16K
Managing Editor: W. BeiglbSck, Heidelberg
87
Few Body Systems
and Nuclear Forces II
8. International Conference
Held in Graz, August 24-30, 1978
detidE yb
H. Zingl, .M Haftel and .H Zankel
galreV-regnirpS
Berlin Heidelberg New kroY 8791
Editors
H. Zingl
M. Haffel
H. Zankel
Institut f~r Theoretische Physik
der Universit~t Graz
Universit~tsplatz 5
A-8010 Graz
ISBN 3-540-09099-1 Springer-Verlag Berlin Heidelberg New York
ISBN 0-387-09099-1 Springer-Verlag New York Heidelberg Berlin
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EDITORIAL PREFACE
The 8 th International Conference on Few Body Systems and Nuclear Forces
was held at the University of Graz, Graz Austria on August 24 - 30, 1978.
The past twenty years have seen a considerable broadening in energy,
scope and thought regarding "Few Body" problems. The early conferences
concentrated mainly on low energy two and three nucleon processes
mediated by two-body, non-relativistic potentials. While these problems
still play a role, the main emphasis in the Graz conference vis ~ vis
the nuclear force was its relation to intermediate energy (that is
meson-nucleon) physics and even particle physics. Data from meson fac-
tories like LAMPF, TRIUMF and SIN have challenged theorists to inves-
tigate more thoroughly the "meson degrees of freedom" which promise to
play an essential role in understanding the N-N data above 400 MeV.
Also, for the first time at one of these conferences, the role of
quarks in understanding the nuclear force, especially at short dis-
tancesn was considered.
The traditional "low energy" regime has undergone considerable trans-
formation as indicated by the work presented at Graz. New data and
phase-shift analyses have clarified many of the ambiguities associated
with the P-wave and tensor N-N interaction. The work on polarization
in the N-d system has motivated the development of more sophisticated
three-body scattering codes with higher partial waves, to analyze even
breakup polarization experiments. The period since the 1976 Delhi
conference has also witnessed the application of three-body methods,
once applied only to the 3N-problem, to more complex systems. Progress
reported in Graz involved both a practical side (such as e-d breakup
calculations) and theoretical side (such as presentation of ways of
including few-body methods in N body calculations which promise some
hope of being applied). Even the once forbidding "exact" solution of
the four body problem has been amply attacked. A beginning~has also
been made to include few-body problems in other fields - notably
atomic and molecular physics. While the contributions at Graz in these
fields have been modest (along with a couple of contributions in Delhi)
a beginning has been made with the promise of more in future con-
ferences.
The Graz conference consisted of 13 invited talks given in plenary
sessions, 3 poster sessions and 10 discussion sessions which met for
2 - 3 hours each. Two of the discussion sessions 8( and 10) were di-
vided into 2 sessions each.
JV
The invited papers were selected to cover the areas of traditional
interest (e.g., a review of N-N potential theories), to report on
topics of special interest, and to introduce work on the frontier edge
of the field (e.g., quarks and the N-N interaction). The discussion
sessions were designed to enable the detailed discussion of the con-
tributions in each field of interest. These were preceded by poster
sessions to give an ample opportunity for one-on-one discussion before
presentation of a contribution in a discussion session. Most of the
contributed papers were presented in the discussion session with the
exact format up to the discussion leader. Each rapporteur then gave a
report to the full conference on the significant developments in the
subject area of each discussion group - following the pattern of the Laval
and Delhi conferences. We must add that, on the whole, the rapporteurs
did an enviable job of presenting the significant issues in a coherent
manner while integrating into it the contributions presented at this
conference.
This is the second of 2 volumes of the conference proceedings. Volume I,
which includes contributed papers, has already been published and was
available to participants at the beginning of the conference. In this
way conference participants could have the full text of the contri-
butions for study. This did, however, necessitate an early deadline
with the resulting problem of omission of important work performed after
the deadline. This volume contains the invited talks, rapporteur re-
ports and post-deadline papers. The post-deadline papers published
are those which, on the advice of the international advisory committee,
the editors selected as contributions which contained important results
but were received after the deadline.
The organizers are indebted to I.R.Afnan, R.Amado, E.BackenstoB, G.Bencze,
H.E.Conzett, J.A.Edgington, Y.Kim, W.Sandhas, I.Slaus, R.Vinh Mau and
B.Zeitnitz for moderating the discussion sessions which were a most im-
portant part of the conference. They are greatful to K.Bleuler, R.Haddock,
W.Haeberli, A.Johansson, J.Levinger, I.Slaus, R.Slobodrian and K.Wilder-
muth for chairing the plenary sessions. Finally, we owe much to Gudrun
Jaritz and Maria Krautilik for typing and correcting many of the manu-
scripts in this volume.
Harald F. K. Zingl
Michael .I Haftel
Graz, October 3, 1978 Hubert Zankel
INTERNATIONAL ADVISORY COMMITTEE
I.R.Afnan,Bedford Park,Australia A.N.Mitra,Delhi,lndia
E.O. Alt, Mainz, Germany M.J. Moravcsik, Eugene, USA
R.D. A/~ado, Philadelphia, USA H.P. Noyes, Stanford, USA
G. Bencze, Budapest, Hungary V. Valkovi~,Zagreb,Yugoslavia
W. Breunlich, Vienna, Austria J.M. Pniewski, Warsaw, Poland
G.E.Brown,NORDITA and Stony Brook,USA H.G. Pugh, College Park, USA
H.E. Conzett, Berkeley, USA J.R.Richardson,Los Angeles,USA
J.A. Edgington, London, England L. Rosen, LAMPF, USA
H. Fiedeldey, Pretoria, Southafrica W. Sandhas, Bonn, Germany
M. Gmitro, Rez, Czechoslowakia T. Sasakawa,Sendai, Japan
W. Gr~ebler, Zdrich, Switzerland .E Schmid, T~bingen, Germany
A. Johansson, Uppsala, Sweden P. Signell,East Lansing, USA
Y. Kim, West Lafayette, USA A.G. Sitenko, Kiew, USSR
L. Kok, Groningen, Netherlands .I Slaus, Zagreb, Yugoslavia
V.V. Komarov, Moskow, USSR R.J.Slobodrian,Quebec, Canada
B. K0hn, Dresden, GDR W. Thirring, Vienna, Austria
M.P. Locher, SIN, Switzerland J.A. Tjon, Utrecht,Netherlands
.I Lovas, Budapest, Hungary R.Vinh Mau, Paris, France
P. Macq, Louvain, Belgium R.van Wageningen,Amsterdam,
Netherlands
J.S.C. Mc Kee, Winnipeg, Canada
B.Zeitnitz, Bochum, Germany
D.F. Measday, Vancouver, Canada
LOCAL ORGANIZING COMMITTEE
J- Fr~hlich F. PauB
H. Kriesche W. Plessas
H. Latal K. Schwarz
L. Mathelitsch H. Zankel
H. Mitter H. Zingl
TABLE OF CONTENTS
I. TWO HADRON INTERACTIONS
1.1. N-N Phase Shift Analysis
R.A. Bryan (Texas A&M) .......................... 2
1.2. Potentials in Review
K. Holinde (Bonn) ............................... 12
1.3. Two-Hadron Interaction
(Rapporteur's talk to discussion session I)
E. Lomon (MIT) .................................. 48
1.4. Off-Shell Effects in the Nucleon-Nucleon System
(Rapporteur's talk to discussion session 2)
L. Heller (Los Alamos) .......................... 68
1.5. Polarization Phenomena in Two-Body Systems
(Rapporteur's talk to discussion session 3)
G. Thomas (Argonne) ............................. 86
1.6. Quark Models of the Nuclear Force
C. De Tar (Utah) ................................ 113
I .7. Experiments on the Conservation or Non-
Conservation of Isospin, Parity, and Charge
Conjugation and Time Reversal Invariance
R.P. Haddock (UCLA) ............................. 127
2. PION INTERACTION AND PION PRODUCTION
2.1. Nucleon Induced Experiments above Pion
Threshold
G. Jones (TRIUMF) ............................... 142
2.2. Pion Production in Nucleon-Nucleon Scattering
(Rapporteur's talk to discussion session 10/2)
W.M. Kloet (Rutgers) ............................ 164
2.3. Pion-Nucleus Interaction
(Rapporteur's talk to discussion session 10/I)
W. Weise (Regensburg) ........................... 177
2.4. Meson Induced Reactions in the Two- and Three-
Nucleon System
B. Nefkens (UCLA) ............................... 189
3. THREE AND FOUR BODY SYSTEMS
3.1. Nuclear Reactions Involving Three-Particle
Systems
A.G. Sitenko (Kiew) ............................. 210
3.2. Lepton Scattering
I. Sick (Basel) ................................. 236
fIIV
3.3. Recent Work in Three-Body Systems
(Rapporteur's talk to discussion session )5
A.W. Thomas (TRIUMF) ...........................
3.4. Low Energy Three- and Four-Nucleon
Scattering Experiments
B. Sundquist (Uppsala) ......................... 267
3.5. Polarization Effects in the Three-Body System
(Rapporteur's talk to discussion session )6
G.G. Ohlsen (Los Alamos) ....................... 295
3.6. Dynamics of Four-Particle Systems
(Rapporteur's talk to discussion session )7
J.A. Tjon (Utrecht) ............................ 320
3.7. Three-Body Phenomenology for Elementary
Particle Systems
(Rapporteur's talk to discussion session )4
R. Aaron (Northeastern) ........................ 333
3.8. Exact Results for the Scattering of Three
Charged Particles
W. Thirring (Vienna) ........................... 353
.4 N BODY SYSTEMS AND FEW BODY SYSTEMS IN OTHER FIELDS
4.1. Highlights of the Third International Conference
on Clustering Aspects of Nuclear Structure and
Nuclear Reactions
B.S. Bhakar and W.T.H. van Oers (Manitoba) ..... 364
4.2. Few-Body Aspects of the 6-Nucleon System
(Rapporteur's talk to discussion session 8/I)
G.R. Plattner (Basel) .......................... 376
4.3. N-Body Systems
(Rapporteur's talk to discussion session )9
K.L. Kowalski (Case Western Reserve) ........... 393
4.4. Narrow Resonances in the Continuum
D. Fick (Marburg) .............................. 414
4.5. Application of Few-Body Methods to Other Fields
(Rapporteur's talk to discussion session 8/2)
E.F. Redish (Maryland) ......................... 427
.5 CONCLUDING REMARKS
Twenty Years of the Few-Body Problem
M.J. Moravcsik (Oregon) ........................ 452
.6 POST DEADLINE PAPERS
6.1. Recent Progress in Dispersion Theoretical
Approach to Nuclear Forces
R. Vinh Mau .................................... 472
XI
6.2. Tensor Analyzing Powers in Deuteron-Proton
Elastic Scattering and the Breakup Reaction
at 45.5 MeV
H.E. Conzett .................................. 477
6.3. On Polarization Phenomena in Proton-Deuteron
Elastic Scattering at Medium and High Energies
B.S. B~a~r and ~.T.H. v~ Oers ................ 483
6.4. The Methods of Solving the Few-Body
Problem in Quantum Mechanics
V.V. Komarov ................................... 487
6.5. Extension of the Lane Model to Light Nuclei
R.C. Byrd, R.L. Walter and S.R. Cotanch ........ 493
6.6. Third Cluster Coefficient for Square Well Discs
S.Y. Larsen and J.E. Kilpatrick ................ 497
6.7. Applications of ATMS to the 4He Trimer and
Tetramer
S. Nakaichi, Y. Akaishi, .H Tanaka and T.K. Lim. 501
6.8. Effects of the Coulomb Distortion on Phase-Shifts
and Effective-Range Parameters in Proton-Proton
Scattering
L. Mathelitsch and W. Plessas .................. 505
6.9. Limit on the Applicability of the Low Theorem
for Proton-Proton Bremsstrahlung
B.M.K. Nefkens, O.R. Sander,
G.D.L. Webster and D.I. Sober .................. 507
6.10. Optimal Complete and Optimal Sufficient Sets
of Experiments for Elastic Nucleon-Nucleon
Scattering
J. Bystricky, F. Lehar, J. Patera and
P. Winternitz .................................. 509
6.11. Polarization Measurement in pp Elastic
Scattering at 150 GeV/c between 0.2 < -t < 3 GeV 2
G. Fidecaro, M. Fidecaro, L. Lanceri,
S. Nurushev, Ch. Poyer, V. Solovianov,
M. Steurer, A. Vascotto, F. Gasparini,
M. Posocco, C. Voci, R. Birsa, F. Bradamante,
M. Giorgi, A. Penzo, L Piemontese, P. S ~
A. Villari, W. Bartl, Ro Fr~hwirth, H.R. Gerhold,
Ch. Gottfried, G. Leder, W. Majerotto,
G. Neuhofer, M° Pernicka, M. Regler and
H. Stradner .................................... 511
6.12. The Tensor Analyzing Power Axz for Elastic
Scattering of 20.2 MeV Deuterons from 4He
P. Schiemenz, H. Clement, R. Frick,
G. Graw and N. Seichert ........................ 515
6.13. Evidence for Fragment Production via Two-Body
Breakup
J.A. Gaidos, L.J. G~tay, A.S. Hirsch,
R. Mitchell, T.V. Ragland, R.P. Scharenberg,
F. Turkot, R.B. Willmann and C.L. Wilson ....... 516
6.14. p-d Scattering at Very Small Relative Energy
Observed in the FSI Regions of the 3He (p,dp) p
Reaction at 156 MeV
T. Yuasa and N. Koori .......................... 519
6.15. Finite Cross Section for Three-Particle
Scattering
M. Yamazaki .................................... 521
6.16. Charge-Independent R-Matrix Analysis of the
Four-Nucleon System
G.M. Hale and D.C. Dodder ...................... 523
6.17. Two-Body Scattering in Force Field
V.V. Komarov, A.M. Popova and V.A. Shablov ..... 525
6.18. Separable Interaction of Composite Particles
with Inclusion of the Pauli Principle
E.W. Schmid and R. Kircher ..................... 528
6.19. ÷ ~ d ynn and the Effective Theory Range
Parameters a and r
nn nn
J.C. Alder, W. Dahmem, H.v. Fellenberg,
B. Gebioud, C. Joseph, J.F. Loude, N. Morel,
H. Panke, A. Perrenoud, J.P. Perroud,
D. Renker, G. Strassner, M.T. Tran, P. Tru61,
E. Winkelmann and C. Zupancic .................. 530
Erratum: A New Stable Dibaryon
H. H~gaasen and P. Sorba
(Few Body Systems and Nuclear Forces I,
Proceedings, Graz 1978, in Lecture
Notes in Physics 82 (1978)84) ............... 533
List of Participants .................................... 534
A NEW STABLE DIBARYON-ERRATUM
H. H#gaasen and P. Sorba CERN
The use of an incorrect expression for the eolourmagnetic interaction of A and ° C
led us to an estimate of the mass defect of the AC ° state that probably is wrong.
Equation 6 should read
Min(EI,E2) ~ <6qIH'I6q> - <AIH'IA> - <C°IH, IC°> ~ Max(EI,E2)
4
where 1 = E -12(Cns + Cne - Cn~ - ~ Csc
2 E = - 8(Cns + Cnc + Csc) + -32Cnn
<AIH'IA> = <C°IH'IC°> = <NIH'IN> = -8C
nn
Because of the uncertainty in the values of the parameters C~. lj' it cannot be decided
from the linear mass formula that the AC ° state is bound. A MIT type mass formula
gives however a binding energy of the AC ° state which is around 200 Mev. A greatly
extended version of this paper is now CERN preprint TH 2531.