Parameterization of Polarized ^3He QuasiElastic Scattering Cross Sections
Abstract
Radiative corrections are important steps when extracting scattering cross sections from data. In order to apply radiative corrections to the ^3He nucleus, an accurate parameterization of these crosssectional data in a wide kinematic range are needed. There exist no world parameterizations for the polarized quasielastic scattering crosssections for the ^3He nucleus, but instead data from other nuclei are combined with theoretical predictions for the polarized ^3He nucleus. However, ^3He nuclear effects are neglected. This can lead to large uncertainties in the results. In order to perform the parameterization, various computational methods were used to create a physical model of the scattering which would not neglect the ^3He nuclear effects. The Jefferson Lab National Accelerator Facility data were fit to various nonlinear distribution models and the best fits were found for each beam energy. A global fit was created by fitting the parameters of these distributions. These results can be used to predict polarized quasielastic cross sections for unmeasured kinematics and for applying radiative corrections where such parameterizations are needed.
 Publication:

APS Division of Nuclear Physics Meeting Abstracts
 Pub Date:
 October 2007
 Bibcode:
 2007APS..DNP.DA028G