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Configuration-Space View of High-Energy Scattering
Phys. Rev. D 4, 444 – Published 15 July, 1971
DOI: https://doi.org/10.1103/PhysRevD.4.444
Abstract
We consider the amplitude for the reaction , where and are scalar currents and and are on-shell scalar particles. We assume scaling behavior, , with , , and fixed, and Regge behavior, for , with fixed and implement these behaviors on integral representations with suitable spectral functions. For , we derive the commutativity relation and the asymptotic behavior for the coefficient of the leading light-cone (LC) singularity of the Fourier transform of . [.] Thus, the leading LC singularity determines the trajectory function and thus provides a configuration-space view of high-energy behavior. This generalizes our previous results for . To see what can happen for , we use the ladder approximation for . We again derive a commutativity relation . Thus the large- behavior of is quite different for and for . This behavior can, in particular, be nice at , and the assumption that is seen to lead to interesting constraints on the Regge trajectory.
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