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首页> 美国政府科技报告 >Relations among the Superconvergence Conditions for Forward Elastic Scattering. Iii. General Method to Obtain All Independent Superconvergence Conditions for Forward Amplitudes
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Relations among the Superconvergence Conditions for Forward Elastic Scattering. Iii. General Method to Obtain All Independent Superconvergence Conditions for Forward Amplitudes

机译：前向弹性散射的超收敛条件之间的关系。三。获得前向振幅的所有独立超收敛条件的一般方法

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The superconvergence conditions for forward elastic scattering of two spinning particles are discussed. The crossing relation implies that the t-channel forward amplitude is related to those s-channel forward amplitudes which do not flip helicities by more than 1. Therefore, in general, the superconvergence conditions for the t-channel forward amplitudes do not exhaust all possible superconvergence conditions for forward amplitudes. A general method to obtain all independent superconvergence conditions for the s-channel forward amplitudes is described. The linear relations among the derivatives (with respect to t) of the t-channel helicity amplitudes at t=0 are derived and discussed. (Author)

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