QCD Hard Hadronic Processes

The Advanced Research Workshop on QeD Hard Hadronic Processes was held on 8-13 October 1987 at Hotel on the Cay, St. Croix, U. S. Virgin Islands. The underlying theme of the workshop, the first in a series, was an examination, both theoretical and experimental, of the state of understanding of Quantum Chromodynamics. Because of the pervasiveness of the strong interactions in all aspects of high energy physics, QCD is central to many problems in elementary particle physics. Therefore, this workshop was organized to provide a forum in which the theory Quantum Chromodynamics cou 1 d be confronted with experi ment. The workshop was organ i zed in four sessions, each of which concentrated on a major experimental arena in which a hard QCD process can be measured experimentally. A fifth session was rlevoted to global issues which effect all QCD processes. Each session began with a survey of the theoretical developments in the particular area and concluded with a round table which discussed the various information presented in the course of the discussions. A session of the workshop was devoted to the direct production of high transverse momentum photons in hadronic interactions. Data from several experiments, either completed or in progress at CERN (NA3, NA24, WA70, UA6, CCOR, R806, AFS, RllO, UA1 and UA2), were di scussed and the prospects for two new upcomi ng experi ments from Fermil ab (E-705, E-706) were presented.

Contenu

Conference Keynote.- QCD: Hard Collisions are Easy and Soft Collisions are Hard.- Direct Leptons, W, Z Boson.- Preliminary Results from CDF on W,Z Production at the Tevatron Collider.- Study of Dimuons with NA10.- QCD in the Limit xF ? 1 as Studied in the Reaction ??N ? ?+??X.- Summary of Direct Lepton Session and Round Table.- Direct Photon.- Direct Photons at Large PT from Hadronic Collisions: A Short Review Based on the QCD Analysis Beyond Leading Order.- Direct Photon Production from Positive and Negative Pions and Protons at 200 GeV/c (NA3 Collaboration).- Direct Photon Production in p?p and pp Collisions.- Direct Photon Production by ??p, ?+p and pp Interaction at 280 GeV/c: Results from the WA70 Experiment at CERN.- Results on Direct Photon Production from the UA2 Experiment at the CERN Proton-Antiproton Collider.- Direct Photons in UA1.- Large PT Photoproduction in CERN-Experiment WA69.- Direct Photons at the CERN ISR.- Prompt Photon Production in 300 GeV/c ??p, ?+p and pp Collisions.- Direct Photon Physics from R 806, R 807, R 808.- Charm Photoproduction and Lifetimes from the NA14/2 Experiment.- Photon Hard-Scattering in the NA14 Experiment.- Round Table Discussion on Direct Photons.- Certain Uncertainties in QCD Theory Predictions for Large-pT Photons and Other Processes.- Comments from Direct Photon Round Table Discussion.- Special Topics.- The Hadronic Interaction Model Fritiof and Bose-Einstein Correlations for String Fragmentation.- Parton Distributions in Nuclei and Polarised Nucleons.- Heavy Quark Production in QCD.- Some Recent Developments in the Determination of Parton Distributions.- New Direct Photon Experiments.- Direct Photon Studies - Current Status of Experiment E706 (Fermilab).- Expectations for Direct Photon Physics from Fermilab Experiment E705.- Hadronic Jets.- Jet Physics from the Axial Field Spectrometer.- Measurements on W and Z Production and Decay from the UA2 Experiment at the CERN $$ {\bar p} $$p Collider.- Theoretical Review of Jet Production in Hadronic Collisions.- Results on Jet Production from the UA2 Experiment at the CERN Proton-Antiproton Collider.- Results on Jets from the UA1 Experiment.- Recent Results from Fermilab E557 and E672 Experiments.- Summary and Round Table Discussion: Hadronic Jets.- Heavy Flavor Production.- QCD: Photo/Hadroproduction of Heavy Flavors; Fermilab E691, E769 and Beyond.- Dimuon Experiments at the Fermilab High Intensity Laboratory.- Heavy-Flavour Production in UA1.- Charm Production from 400 and 800 GeV/c Proton-Proton Collisions.- Production of Particles with High Transverse Momenta in 800 GeV Proton-Nucleus Collision, E605-FNAL.- Experimental Study of B$$ {\bar B} $$ Hadroproduction in the WA75 and WA78 Experiments.- Heavy Quark Production in Hadron Collisions A Theoretical Overview.- Charm and Beauty Decays via Hadronic Production in a Hybrid Emulsion Spectrometer (Fermilab E653a).- Heavy Flavor Production.- Conference Summary.- Hard Processes in QCD.- Participants.