The threshold behaviour of partial wave scattering amplitudes and theN/D-method

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RESEARCH PRODUCT

The threshold behaviour of partial wave scattering amplitudes and theN/D-method

subject

Physics Scattering amplitude Nuclear and High Energy Physics Weight function Amplitude Classical mechanics Scattering Dispersion relation Mathematical analysis Order (group theory)Elementary particle Field theory (psychology)

description

It is shown that in partial wave dispersion relations the weight function on the unphysical cut must have a certain number of zeros in order to permit the correct threshold behaviour of the amplitude. Assuming a solution — not necessarily with correct threshold behaviour — of the once-subtractedN/D-equations to exist, the role of the subtraction parameters in repeatedly subtractedN/D equations is studied with particular reference to the threshold behaviour.

year	journal	country	edition	language
1964-08-01	Zeitschrift f�r Physik

https://doi.org/10.1007/bf01380721

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