Energy flow and particle spectra with respect to the reaction plane for Au+Au collisions at AGS energies

摘要

Transverse energy flow is studied by exploiting the near 4(pi) calorimetric coverage of experiment E877. A Fourier decomposition of the azimuthal transverse energy distributions in different regions of pseudorapidity is performed as a function of the centrality in order to describe the event shape. The extracted coefficients are compared to model predictions. Using the E877 forward spectrometer, triple differential cross section for protons and (pi)(sup +) are measured with respect to the reaction plane determined by calorimeters. The variation of slope parameters at different orientations to the reaction plane is obtained by fitting to thermal Boltzmann distributions.