Spin Structure Function Physics with an Upgraded PHENIX Muon Spectrometer

The PHENIX/Spin Collaboration

October 27, 1994

Abstract:

A major investment by the RIKEN Spin Group makes feasible a significant enhancement of the polarized collider program of the PHENIX Detector using the muon detection capability. The addition of a second muon end cap and muon identification in the central rapidity region yields a detector with large acceptance for high mass muon pairs. The upgrade makes feasible a program of polarized quark and antiquark structure function physics using Drell-Yan continuum and vector boson production. It also adds significantly to the array of measurements feasible for investigating gluon polarization via heavy quark production.

The proposal of the RHIC Spin Collaboration was approved one year ago based on the PHENIX detector of the Conceptual Design Report (CDR). The principal operational difference in the present proposal is a request for polarized proton operating time at . This energy optimizes the rate of high- Drell-Yan pairs where large polarization effects are most likely to be observed. It also minimizes backgrounds from competing processes, principally semi-leptonic charm decay.

Collaborating Institutions

PHENIX Collaborating Institutions
- Bombay Research Institute, Bombay, India
- Brookhaven National Laboratory, Upton, NY 11973
- University of California, Riverside, Riverside, CA 92521
- Chinese Institute of Atomic Energy, Beijing, China
- Chung-ang University, Seoul, Korea
- Columbia University, Nevis Labs., Irvington, NY 10533
- Institute for High Energy Physics, Academia Sinica, Beijing, China
- Institute of High Energy Physics, Protvino, Russia
- Institute of Modern Physics, Academia Sinica, Lanzhou, China
- Institute for Nuclear Research, Moscow, Russia
- Iowa State University, Ames, IA 50011
- Joint Institute for Nuclear Research, Dubna, Russia
- Korea University, Seoul, Korea
- Kurchatov Institute of Atomic Energy, Moscow, Russia
- Lawrence Livermore National Laboratory, Livermore, CA 94550
- Los Alamos National Laboratory, Los Alamos, NM 87545
- Louisiana State University, Baton Rouge, LA 70803
- Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Peking University, Institute for Heavy-Ion Physics, Beijing, China
- Petersburg Nuclear Physics Institute, St. Petersburg, Russia
- University of Sao Paulo, Sao Paulo, Brazil
- Seoul National University, Seoul, Korea
- Soong-Sil University, Seoul, Korea
- University of Tennessee, Knoxville, TN 37996
- Vanderbilt University, Nashville, TN 37235
- Yonsei University, Seoul, Korea
New Institutions and Participants
- Institute for Chemical and Physical Research (RIKEN), Hirosawa, Wako, Japan
  T. Ichihara, M. Ishihara, Y. Wantanabe
- Kyoto University, Kyoto, Japan, and RIKEN
  H. Enyo, K. Imai, H. Kaneko, A. Masaike, T. Murakami, M. Yosai
- Tokyo Institute of Technology, Tokyo, Japan, and RIKEN
  T.-A. Shibata
- New Mexico State University, Las Cruces, NM
  G. Kyle

Spokesmen: K. Imai, Kyoto University and RIKEN J.M. Moss, Los Alamos National Laboratory

Local Coordinators: Y. Makdisi and M.J. Tannenbaum

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