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History and implications
This observation turned Regge theory from a mathematical curiosity into a physical theory: it demands that the function that determines the falloff rate of the scattering amplitude for particle-particle scattering at large energies is the same as the function that determines the bound state energies for a particle-antiparticle system as a function of angular momentum.[5]

After many false starts, Richard Dolen, David Horn, and Christoph Schmid understood a crucial property that led Gabriele Veneziano to formulate a self-consistent scattering amplitude, the first string theory.

https://ja.wikipedia.org/wiki/%E3%83%AC%E3%83%83%E3%82%B8%E3%82%A7%E7%90%86%E8%AB%96
レッジェ理論（レッジェりろん）は、1960年にイタリアの物理学者トゥーリオ・レッジェが発見した理論。レッジェ・ポール理論ともいう。高エネルギーの素粒子反応に関する理論であり、角運動量を複素数平面に解析接続することによって散乱振幅を表す[1]。これを使うと、ポメロンとレッジェ極（特異点）の交換により回折散乱を表現できる[2]。

https://en.wikipedia.org/wiki/Ramamurti_Rajaraman
Ramamurti Rajaraman (born 11 March 1939)

Regge poles and particle phenomenology
At that time, high energy hadron scattering was being analysed using S-matrix and Regge pole techniques.
Rajaraman gave the first determination from experimental data of the value of the "Triple Pomeron Vertex" as a function of momentum transfer[12] and also derived the consequences of the vanishing of this vertex on high energy hadron scattering.[13] With Finkelstein, he analysed Exchange Degeneracy in inclusive reactions involving the triple-Reggeon vertex[14][15]

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