Table Of ContentProbing Hadrons
with Leptons
ETTORE MAJORANA INTERNATIONAL SCIENCE SERIES
Series Editor:
Antonino Zichichi
European Physical Society
Geneva, Switzerland
(PHYSICAL SCIENCES)
Volume 1 INTERACTING BOSONS IN NUCLEAR PHYSICS
Edited by F. lachello
Volume 2 HADRONIC MATTER AT EXTREME ENERGY DENSITY
Edited by Nicola Cabibbo and Luigi Sertorio
Volume 3 COMPUTER TECHNIQUES IN RADIATION TRANSPORT
AND DOSIMETRY
Edited by Walter R. Nelson and T. M. Jenkins
Volume 4 EXOTIC ATOMS '79: Fundamental Interactions and Structure
of Matter
Edited by Kenneth Crowe, Jean Duclos, Giovanni Fiorentini, and
Gabriele Torelli
Volume 5 PROBING HADRONS WITH LEPTONS
Edited by Giuliano Preparata and Jean-Jacques Aubert
Probing Hadrons
with Leptons
Edited by
Giuliano Preparata
C. E. R. N.
Geneva, Switzerland
and
Jean-Jacques Aubert
Particle Physics Laboratory
Annecy-Ie-Vieux, France
Plenum Press . New York and London
Library of Congress Cataloging in Publication Data
Seminar on Probing Hadrons with Leptons, 4th, Erice, Italy, 1979.
Probing hadrons with leptons.
(Ettore Maiorana international science series: Physical sciences; v. 5)
"Proceedings of the Fourth Seminar on Probing Hadrons with Leptons,
held in Erice, Sicily, Italy, in March, 1979."
Includes index.
1. Hadrons-Scattering-Congresses. 2. Leptons-Scattering-Congresses.
I. Preparata, Giuliano. II. Aubert, Jean-Jacques. III. Title. IV. Series.
QC793.5.H328S45 1979 539.7'216 80-12024
ISBN-13: 978-1-4613-3104-9 e-ISBN-13: 978-1-4613-3102-5
001: 10.1007/978-1-4613-3102-5
Proceedings of the Fourth Seminar on Probing Hadrons with Leptons, held in
Erice, Sicily, Italy, in March, 1979.
© 1980 Plenum Press, New York
Softcover reprint of the hardcover 1s t edition 1980
A Division of Plenum Publishing Corporation
227 West 17th Street, New York, N.Y. 10011
All rights reserved
No part of this book may be reproduced, stored in a retrieval system, or transmitted,
in any form or by any means, electronic, mechanical, photocopying, microfilming,
recording, or otherwise, without written permission from the Publisher
FOREWORD
Physicists actively engaged in advanced research should be en-
couraged to discuss results and deepen their theoretical understand-
ing of the data. It is practically impossible nowadays to achieve
the goal of the old times when small groups of scientists had the
privilege of debating their ideas and the details of their experi-
ments in an informal and friendly way. Conferences are now too wide
in scientific coverage and, in consequence, there are often too many
participants.
The Highly Specialized Seminars of the Ettore Majorana Centre
for Scientific Culture are intended to provide such a forum for
scientists of outstanding reputation in their fields to exchange
information.
This volume deals with one of the most interesting topics in
subnuclear physics, and Professor Giuliano Preparata is one of the
world's leaders in the field. This volume contains the most recent
results on the study of deep inelastic phenomena, using neutrinos,
muons and electrons against nucleons, and (e+e-) interactions. It
represents our best knowledge of the field as given by some of the
most distinguished world experts in the theoretical and experimental
domain.
Antonino Zichichi, Director
Ettore Majorana Centre for
Scientific Culture
v
PREFACE
In March 1979, about 50 physicists gathered in Erice to parti-
cipate in the Fourth Highly Specialized Seminar on "Probing Hadrons
with Leptons".
In today's subnuc1ear physics, the hadronic structure at short
distances, as revealed by highly inelastic collisions among leptons
and hadrons plays a central role in our understanding of the basic
forces of Nature. It is here that the relevance of the concepts
of quarks and colour has found its most dramatic testing ground,
and it is here that new intriguing effects keep emerging after ten
years of momentous experimentation.
The most diverse aspects of deep inelastic physics were dis-
cussed in Erice in a very frank, friendly and productive fashion.
Opposing views had the chance, quite uncharacteristically for the
present situation, to be discussed and evaluated on their own merits
and confronted with the known facts. As a result, we believe that
the seminar was, for all those who participated, a very interesting
and successful enterprise. It is in order to give the discussions
of Erice a wider forum that the proceedings of the seminar are
being published.
A special thanks goes to Kathie Hardy for skillful work in pre-
paring this volume and to Sheila Navach for her organizing skill
and constant efforts in a~ranging transportation to overcome a
sudden strike.
Finally, we thank all those who have contributed and sacrificed
some of their time in order to ensure that the material discussed
at Erice would be made available to a wider audience.
Giuliano Preparata and Jean-Jacques Aubert
Geneva, November 1979
vii
CONTENTS
First Result from Mark II at Spear 1
P. Jenni
Formation of Upsilon Mesons at Doris 17
K.R. Schubert
First Results of the Mark-J Detector at
Petra 31
A. Bohm
Fl·n a ItSates 'ln e +e - An nl'h 1' l atl.o n . . . . . . . . . . . . 47
M.K. Gaillard
Deep Inelastic Muon and Electron Scattering
as a Probe for Quarks and Gluons in
the Nucleon . . . . . . . . . . . . . 85
H.L. Anderson
Recoil Hadron Measurements in Deeply
Inelastic Scattering .... 141
T.B.W. Kirk
First Results from the Berkeley-Fermilab-
Princeton Multimuon Spectrometer 163
M. Strovink
Deep Inelastic Muon Nucleon Scattering:
A Probe of Hadronic Structure . . 183
H.E. Stier
Studies of Muon Induced Multimuon Final States
in the EMC Experiments NA2 . . . . 199
J.J. Aubert
Deep Inelastic Muon Scattering and Recent
Result at High q2 . . . • • • . • • 217
K.W. Chen
ix
x CONTENTS
+
Deep Inelastic Scattering of ~ at 280
GeV/c on Carbon •.••.••.. 235
G. Smadja
The Parton Model and Asymptotic Freedom
Revisited 253
G.B. West
The Hadronic Final State in Deep Inelastic
Scattering 275
P.V. Landshoff
Review of Electroproduction Experiments at
Cornell and M.I.T.-SLAC •... 291
1. S. Osborne
Future Plans on Lepton Physics with the
Energy Doubler at Fermilab 321
T.B.W. Kirk
The WA18 v Experiment at the CERN SPSI. • . . • . . . • . 351
F. Niebergall
Structure Functions from Neutrino Nucleon
Scat t er ing •.••••..••. 359
C. Gewen ig er
Measurement of Neutral to Charged Current
Ratio in Neutrino-Proton Interactions 375
D. Haidt
Properties of Hadrons Produced by Neutrinos
in Hydrogen . • • . . . . . . • • . . 385
J.C. Vander Velde
Probing Neutral Currents with Leptons • • . . . • . . . . 399
L.M. Sehgal
Jets in Leptoproduction From QCD 421
Binetruy and G. Girardi
Deep Inelastic Structure Functions: Decisive
Tests of QCD ••.....•. ' .... 441
E. Reya
A Realistic Look at Deep Inelastic Physics 475
G. Preparata
Index 501
FIRST RESULTS FROM MARK II AT SPEAR *
G. S. Abrams, M. S. Alam, C. A. Blocker, A. M. Boyarski,
M. Breidenbach, C. H. BroIl, D. L. Burke, W. C. Carithers,
W. Chinowsky, M. W. Coles, S. Cooper, B. Couchman, W. E.
Dieterle, J. B. Dillon, J. Dorenbosch, J. M. Dorfan, M. W.
Eaton, G. J. Feldman, H. G. Fischer, M.E.B. Franklin,
G. Gidal, G. Goldhaber, G. Hanson, K. G. Hayes, T. llimel,
D. G. Hitlin, R. J. Hollebeek, W. R. Innes, J. A. Jaros,
P. Jenni, A. D. Johnson, J. A. Kadyk, A. J. Lankford,
R. R. Larsen, M. J. Longo, D. L~ke, V. L~th, J. F. Martin,
R. E. Millikan, M. E. Nelson, C. Y. Pang, J. F. Patrick,
M. L. Perl, B. Richter, J. J. Russell, D. L. Scharre,
R. H. Schindler, R. F. Schwitters, S. R. Shannon, J. L.
Siegrist, J. Strait, H. Taureg, V. I. Telnov, M. Tonutti,
G. H. Trilling, E. N. Vella, R. A. Vidal, I. Videau
J. M. Weiss, H. Zaccone.
Presented by Peter Jenni
Stanford Linear Accelerator Center
Stanford University, Stanford, California 94305
and
Lawrence Berkeley Laboratory and Department of Physics
University of California, Berkeley, California 94720
*T his work was supported primarily by the Department of Energy
under contract numbers DE-AC-03-76SF00515 and W-7405-ENG-48.
2 P. JENNI
I. INTRODUCTION
In this talk I will report some of the first results from the
Mark II experiment at the Stanford Linear Accelerator Center e+e-
storage ring facility SPEAR. The first part will be devoted to a
description of the Mark II detector and of its performance. Then I
will show preliminary results on a measurement of the inclusive pro-
duction of baryons (p, p, A and A) over the centre-of-mass energy
range from 4.5 to 6 GeV in a search for a threshold of charmed
baryon production. Data on decays of charmed D mesons have been
accumulated at the ~" (3770) resonance and first results will be
given in part three from an analysis of about one-third of the whole
data sample. Finally, we have observed, for the first time, evidence
for n' (958) production in two-photon collisions. We have measured the
radiative width of the n' through this process as will be discussed
in the last part of this talk.
II. THE MARK II DETECTOR
A schematic view of the Mark II detector is shown in Fig. 1.
A particle that moves outwards from the e+e- interaction region
first traverses the 0.15 mm thick stainless steel vacuum pipe and
two concentric 0.64 cm thick cylindrical scintillation counters. It
then enters the drift chamber l which contains 16 sense-wire layers
of radii 0.41 m to 1.45 m. The wire orientation is such as to pro-
vide the highest accuracy in the transverse direction: six of the
1m
Fig. 1. Schematic view of the Mark II detector. (A) vacuum chamber,
(B) pipe counter, (C) drift chamber, (D) time-of-flight
counters, (E) solenoid coil, (F) liquid argon shower
counters, (G) iron absorber, (H) muon proportional tubes
