Softer Hard Scattering and Noncommutative Gauge-String Duality

TL;DR

This paper investigates high-energy exclusive hadron scattering in noncommutative gauge theories using gauge-string duality, revealing that noncommutativity causes scattering to become exponentially suppressed and soft.

Contribution

It demonstrates how noncommutativity modifies scattering behavior, making it softer and exponentially suppressed, which is a novel insight into noncommutative gauge-string duality.

Findings

Scattering becomes exponentially suppressed due to noncommutativity.

Fundamental partons are extremely soft constituents in noncommutative gauge theories.

Hadrons are composed of open Wilson lines in this framework.

Abstract

We study exclusive scattering of `hadrons' at high energy and fixed angle in (nonconformal) noncommutative gauge theories. Via gauge-string duality, we show that the noncommutativity renders the scattering soft, leading to exponential suppression. The result fits with the picture that, in noncommutative gauge theory, fundamental partons consist of extremely soft constituents and `hadrons' are made out of open Wilson lines.