An improvement of Gribov's reggeon calculus

• Published in: Nuclear physics. B Vol. 85; no. 1; pp. 39 - 49
• Main Authors: Henyey, F.S., Sukhatme, U.P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.1975
• ISSN: 0550-3213; 1873-1562
• DOI: 10.1016/0550-3213(75)90555-6

We derive an expression for Regge cuts and the associated enhancement of Regge poles, following Gribov's derivation of the reggeon calculus, but refraining from making an approximation made by Gribov. We show that Gribov's loop integrand should be multiplied by Δ(t, t 1, t 2) s th t j+1−α 1−α 2 Γ( 1 2 )Γ(j+2−α 1−α 2) Γ(j+ 3 2 −α 1−α 2) . This factor is identically unity for the Regge cut discontinuity, but is different from unity for enhanced singularities.