Baryon emission at target rapidities in Si+Al,Cu,Au collisions at 14.6AGeV/c and Au+Au collisions at 11.7AGeV/c
- Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Brookhaven National Laboratory, Upton, New York 11973 (United States)
- University of California, Space Sciences Laboratory, Berkeley, California 94720 (United States)
- University of California, Riverside, California 92507 (United States)
- Columbia University, New York, New York 10027 (United States)
- Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
- Department of Physics, University of Tokyo, Tokyo 113 (Japan)
We report measurements of proton emission at target rapidities for minimum bias and central collisions of 14.6AGeV/c {sup 28}Si with Al, Cu, and Au nuclei as well as minimum bias and central collisions of 11.7AGeV/c {sup 197}Au with Au nuclei. Results for deuteron emission are also reported for the Si+Au reaction. The spectra span the laboratory angular range of 50{degree}{le}{theta}{le}130{degree} and kinetic energy range of 40MeV{le}E{sub kin}{le}225MeV. Inverse slopes of proton spectra and proton dN/d{eta} values in the kinetic energy range 50MeV{le}E{sub kin}{le}110MeV are reported. The inverse slopes are 40{endash}80 MeV for the various systems, generally increasing with increasing pseudorapidity. The dN/d{eta} values for A+A collisions within the restricted kinetic energy interval are compared to those for protons from p+Au in the literature. All pseudorapidity distributions have very similar shapes. The experimental results have been compared to the predictions of the nucleon-nucleon collision models ARC and RQMD. The predictions made by these two models for the distribution of protons at target rapidities are very similar to each other. However, there are significant differences between the model predictions and the experimental results in the details of the spectral slopes and the proton yields for different trigger conditions. {copyright} {ital 1997} {ital The American Physical Society}
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016; AC02-76ER03069; FG02-86ER40281; FG03-86ER40271; W-31109-ENG-38; W-7405-ENG-48
- OSTI ID:
- 298586
- Journal Information:
- Physical Review, C, Vol. 55, Issue 5; Other Information: PBD: May 1997
- Country of Publication:
- United States
- Language:
- English
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