The UCD
Nuclear Physics Group

DNP '99 Spectra Talk


Physics Department, University of California, One Shields Avenue, Davis, CA 95616

Abstract

The data from the EOS TPC in AGS experiment E895 have been used to study the $m_t$ and $E_k$ spectra of light charged particles ($\pi^-$, $\pi^+$, p, d, t, and $He^3$) at mid-rapidity for the Au+Au system at 2, 4, 6, and 8 AGeV. These spectra are fit to extract temperatures and radial flow velocities which will be compared to models and to other experimental results. Fits to the indivual spectra will be compared to simultaneous fits of multiple particle species which allows one to test the degree of equilibration. The $\pi^+/\pi^-$ ratio at low $m_t$ is used to determine the effective coulomb potential experienced by the pions. This can be used to characterize the effective source size or charge.

Title Page
(This needs to be updated)
Experimental Setup
Detector Views
dE/dx Map
Bethe-Bloch Parameterization
Predictions of B-B Param.
dE/dx Spectra fit
2 AGeV Ek Spectra
4 AGeV Ek Spectra
6 AGeV Ek Spectra
8 AGeV Ek Spectra
Pion Ratios near mid-Rapidity
Global Data on T & beta
Pi Minus mt Spectra at mid-rapidity
Pi Plus mt Spectra at mid-rapidity
Protons mt Spectra at mid-rapidity
Helium 3 mt Spectra at mid-rapidity
 Acc for 2 AGeV Acc for 4 AGeV
Acc for 6 AGeV Acc for 8 AGeV Contour plot for 2gev
Contour plot for 4gev Contour plot for 6gev Contour plot for 8gev

Last update: 08-Oct-99.