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Each experiment, or set, consists of measuring the cross-section (F) as an angle (phi) is changed. Since phi is an angle measurement, its range is from 0° to 360°. The figure below is an example of F vs phi for a fixed kinematic setting.
phi
At each angle that is used, the cross-section is measured multiple times. The mean of these values is recorded in the ‘F’ column of the data file, and the standard deviation is recorded in the ‘errF’ column.
Different experiments represent different environments feature-spaces in which these measurements are performed. The environment fearture-space of an experiment is determined by the kinematic variables k, QQ, x_b, and t. Each set of values of these variables represents an environment (also called a kinematic setting) for an experiment to be run in.
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