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Simultaneous multiplicity and forward energy characterization of particle spectra in Au+Au collisions at 11.6A GeV/{ital c}

Journal Article · · Physical Review, C
OSTI ID:336704
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  1. Brookhaven National Laboratory, Upton, New York 11973 (United States)
  2. University of California, Space Sciences Laboratory, Berkeley, California 94720 (United States)
  3. University of California, Riverside, California 92507 (United States)
  4. Columbia University, New York, New York 10027 and Nevis Laboratories, Irvington, New York 10533 (United States)
  5. High Energy Accelerator Research Organization (KEK),Tsukuba, Ibaraki 305 (Japan)
  6. High Energy Accelerator Research Organization (KEK), Tanashi-branch, (Tanashi) Tokyo 188 (Japan)
  7. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
  8. University of Maryland,College Park, Maryland 20742 (United States)
  9. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  10. Center for Nuclear Study, School of Science, University of Tokyo, Tanashi, Tokyo 188 (Japan)
  11. Department of Physics, University of Tokyo, Tokyo 113 (Japan)
  12. University of Tsukuba, Tsukuba, Ibaraki 305 (Japan)
  13. Yonsei University, Seoul 120-749 (Korea)
+ Show Author Affiliations
In this paper Au+Au collisions at 11.6A GeV/c are characterized by two global observables: the energy measured near zero degrees (E{sub ZCAL}) and the total event multiplicity. Particle spectra are measured for different event classes that are defined in a two-dimensional grid of both global observables. For moderately central events ({sigma}/{sigma}{sub int}{lt}12{percent}) the proton dN/dy distributions do not depend on E{sub ZCAL} but only on the event multiplicity. In contrast the shape of the proton transverse spectra shows little dependence on the event multiplicity. The change in the proton dN/dy distributions suggests that different conditions are formed in the collision for different event classes. These event classes are studied for signals of new physics by measuring pion and kaon spectra and yields. In the event classes doubly selected on E{sub ZCAL} and multiplicity there is no indication of any unusual pion or kaon yields, spectra, or K/{pi} ratio even in the events with extreme multiplicity. {copyright} {ital 1999} {ital The American Physical Society}
OSTI ID:
336704
Journal Information:
Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 59; ISSN 0556-2813; ISSN PRVCAN
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
GOLD
HEAVY ION REACTIONS
KAONS
MULTIPLICITY
PARTICLE PRODUCTION
PIONS
PROTONS