NOTICE BNL 51443 PORTIONS OF THIS REPORT ARE IllEBlBU. UC-28 UC-34d It Ms fcsen reproduced from the best (Particle-Accelerators available copy tc permit the broadest and High-Voltage Machines: possible euailabittiy. Physics - Particles and Fields TIC 4500) ISABELLE PROCEEDINGS OF THE 1981 SUMMER WORKSHOP JULY 20 -31,1981 BIIL--51443 Vol. 3 DEB2 008395 VOLUME 3 EXPERIMENTAL AREAS LARGE DETECTORS BROOKHAVEN NATIONAL LABORATORY ASSOCIATED UNIVERSITIES, INC. UNDEft CONTRACT NO DE-ACO2-76CHOOO16 WITH/THE UNITED STATES DEPARTMENT OF ENERGY DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. 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Printed in the United Stales of America Available from National Technical Information Service U.S. Department of Commerce 5285 Port Royal Road Springfield, VA 22161 NT1S price codes: Printed Copy: A16; Microfiche Copy: AOI FOREWORD The ISABELLB Sumer Workshop, held at BNL from July 20 through July 31, waa attended by 259 physicists representing 72 institutions. The discussions covered experimental areas, large detectors and detector technology, with a primary emphasis on physics opportunities, both with a phased and a full luminosity 1SABBLLE. There waa a consensus that physics with Phase I (Ecm - 700 GeV and l~ 2 x 103i/cm2/sec, with bunched beams) was feasible, Important and exciting* It has been known for years that the orthodox gauge theories i will be critically tested by studying the V , Z° and high px phenom- ena. The Z° has a reasonable chance of being found at the pp colliders if luminosities reach 1030/en2/sec, but its properties will be difficult to decipher. Seeing the W*'s or new heavy quarks Is less probable and measuring their properties Is even less likely. At ISABELLE these phe- nomena, can all be studied with high precision. But the more exciting conclusion which emerged from the workshop was related to the question of what generates the ~100 GeV masses of the W's and Z's. The answer could involve Hlggs, technicolor, or other particles with masses ranging from 10.8 GeV to 1 TeV, with an intermediate mass scale of 200-300 GeV being a possible region of strong Interest. Some of these models predict spec- tacular experimental signatures. It is clear that only ISABELLE with L - 1032 - 103i, has an opportunity of addressing and resolving such questions> The great Interest in ISABELLE physics was also evidenced by the variety of large detectors (6 to date) that have evolved - character- ised by magnetic field configurations ranging from solenoid through dipole and torold to no field at all. The ability to extract the physics was re-examined, leptons and y'a being straightforward, with greater attention being paid to analyzing jet and multijet events and defining their properties, masses, p± , etc. Many advances were also reported in detector R&D, for example, imaging Cerenkov counters, precision drift chambers, scintillating optical fibers. Although there were many prob- lems to be solved, such as data handling and vertex detectors, there was ill more confidence and less apprehension about our ability to solve then. Experimental areas look Cine except for the rerouting of some trenches and exchanging areas #10 and #12 to more easily accomodate the ep option. The question of options was discussed at length and in quite some depth. It seems natural to augment ISABELLE with an ep capability, ep "?Y with a separate ring. Electron energies of 10-20 GeV with lum- .1'-:; if 1031 - 1O32 look achievable and have stimulated great new > The addition of a booster, Phase II, would also naturally al- )A• • f cite study of heavy ion Interactions for which enthusiasm seems to be growing, especially in the light of ISR results. In summary, the Workshop was a very upbeat, enthusiastic, and suc- cessful meeting. With the opportunities for carrying out high energy experiments being limited at present and more so in the future, the com- munity is beginning to reaffirm even more strongly the:great physics potential of ISABELLE. The consensus is to get on with the project, get it done and perform the physics. A turn-on in '86 or '87 is what is desired. N.P. Samios S.C.C. Ting Co-chairmen iv INTRODUCTION The Workshop and then- proceedings were organized into five parts: Organisera 1. Lectures Ling-Lie Chau 2. Physics M.A.B. Beg Ling-Lie Chau V. Fitch A. Mann 3. Experimental Areas R. Lanou S. Aronson A. Large Detectors C. Baitay H. Gordon 5. Detector Research and W. Carithers Develooment T. Ludlam During the two weeks of the Workshop authors gave us their drafts and figures. These were put Into final form by BNL typists and drafts- men. Under the extremely tight time constraints we could not guarantee that everything has come out perfectly - ve did the best job we could. The Workshop and Proceedings were truly a herculean job and could not have been accomplished without the gracious help of many people. Kit McNally and Joyce Ricciardelli coordinated the Workshop from its inception. During the Workshop, they were joined by Penny Baggett and Pat Tuttie at the conference desk. The various amenities were organized by Pat Glynn, Bill Love, Hike Schmidt, Ton Rizzo, Larry Trueman and Peter Yamin. For the Proceedings, Ken Foley served as managing editor, organizing the entire production ln less than a month. The sections were ordered and edited by Ling-Lie Chau, Bob Lanou, Sam Aronson, Too Ludlam and Frank Paige. We had an army of hard-working typists: Donna Early, Judy Ferrero, Barbara Caer, Rae Greenberg, Isabell Harrity, Pat Knisely, Pat Lebitskl, Sharon Smith, Kathy Tuohy, Pat Valll, and Diana Votruba. Drafting the myriad of figures was skillfully accomplished by Randy Bowlas, Rip Bowman, Kathy Brown, Bill Dieffenbach, Sal Morano, and Sue Norton. The enormous job of copy preparation was done by Fern Coyle, Liz Ru88F.il tvnd Joyce Rlcciardelli. None of this would have been possible without the complete support of the Technical Photography and Graphic ArtB Division. Neil Baggett deserves special mention for his incomparable efforts in making this Workshop successful. Howard A. Gordon Editor-in-Chief 21 August 1981 Table of Contents VOLUME 1 ! ' Page Wo. Foreword. Hi Introduction.............................. v Liat of Participants J; , xvii ISABBLLB -OVERVIEW N.P. Samios, xxiii SECTIOH I - Lectures | Performance Characteristics of laaibelle with Fermi lab Magnets E.D. Courant... * 3 Prospects at High Energy : : Frank Wilczek.... 9 The Production of Partons and Hadrons in efe~ Annihilations and in Radron-Hadron Collisions — Quark and Gluon Jet Models R.D. Field „ , 11 Status of Perturbative QCD A.H. Mueller 74 j: '; An Experimental Program to Study l:he Physical Vacuum: High-Energy Nucleus-Nucleus Collisions j i W. Willis „ J 84 i1 i1 r Leptons from pp Interactions : Frank E. Paige. ...!,. 94 Physics from I'ETRA P. Duinker „ 123 Physics at ISR Energies Ulrica Becker. ,, 124 The Large European e+e~ Collider Project LEP E. Keil j 178 Phenomenology of the Higgs Boson A. Ali j 194 vix Page No. "Higga" Physics at Isabella G.L. Kane............... -r.... 23? Experimental Implications of New Theoretical Ideas M.A.B. Beg............................. 242 HERA B.H. Wiik.,.,,....... 251 Grand Unification and Before W.J, Marciano and A. Sirlin............. 289 PSAL pp Project A.V. Tollestrup. 303 The ep Option at ISABELLE U.Y, Lee and R.R, Wilson.... 330 After Dinner Speech at the Isabelle Workshop C.N. Vang 331 A Personal View of the Isabelle Project Samuel C.C. Ting..... 334 Summary Remarks N.P. Samios. a VOLUME 2 SECTION II - Physics Organisation of the Working Groups on Physics M.A.B. Beg and Ling-Lie Chau 405 Group I - Strong Interactions at Small Pt: Otot, dff/dt, Limiting Fragmentation. 406 Law P( Physics P.L. Braceini, L-L. Chau, G. Giacomelli, T.F. Kycia, S.J. Lindenbaum, R.S. Longacre and M. Valdata-Nappi 407 A Multiparticle Magnetic Spectrometer with dE/dx and TRD Particle Identification S.J. Lindenbautn and R.S. Longacre. 426 Glueballa at Isabelle J.P. Donoghue 436 viii t: ii Page Wo. Group II - Strong Interactions at Large Pt Perturbative QCD........ 438 Single PKoton Production in pp and Bp at Iaabelle Energies Odette BenaTy., 439 Average Hadron Multiplicity in Hard Jeta A. Basset to. .................... 443 Group 111 - W*, Z°, Yv * ***" Production and Detection............. 447 Report of 2°, W* and f Working Groups M. Chen, W. Marciano, T. Hatsuda, F. Paige, S. Protopopescu, D. Schildknecht and J. Warnock.... 448 Non Standard W*, Z° Physics J.F. Donoghue 474 Batinates for the Production of Two Direct PhotonB at /s-800 GeV F. Paige and I. Stumer 479 Properties of w± and 2° Z. Paraa and W.J. Marciano , 486 Weak Boson Scenarios Alternative to the Standard Model Dieter Schildknecht 492 Group IV - New Flavor, Bound and Free, Production and Detection 502 The Search for New Flavors at Iaabelle A.