Authors: Tolga Altinoluk Alex Kovner Eugene Levin Michael Lublinsky
Publish Date: 2014/04/10
Volume: 2014, Issue: 4, Pages: 75-
Abstract
We analyze the range of applicability of the high energy Reggeon Field Theory H RFT derived in 1 We show that this theory is valid as long as at any intermediate value of rapidity η throughout the evolution at least one of the colliding objects is dilute Importantly at some values of η the dilute object could be the projectile while at others it could be the target so that H RFT does not reduce to either H JIMWLK or H KLWMIJ When both objects are dense corrections to the evolution not accounted for in 1 become important The same limitation applies to other approaches to high energy evolution available today such as for example 2 3 and 46 We also show that in its regime of applicability H RFT can be simplified We derive the simpler version of H RFT and in the large N c limit rewrite it in terms of the Reggeon creation and annihilation operators The resulting H RFT is explicitly self dual and provides the generalization of the Pomeron calculus developed in 46 by including higher Reggeons in the evolution It is applicable for description of ‘large’ Pomeron loops namely Reggeon graphs where all the splittings occur close in rapidity to one dilute object projectile while all the merging close to the other one target Additionally we derive in the same regime expressions for single and double inclusive gluon production where the gluons are not separated by a large rapidity interval in terms of the Reggeon degrees of freedomThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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