Dilepton production from polarized hadron hadron collisions

TL;DR

This paper develops a detailed formalism for dilepton production in polarized hadron collisions, focusing on angular distributions and structure functions within the parton model, especially at low transverse momentum.

Contribution

It introduces a comprehensive formalism linking angular distributions and structure functions with transverse momentum dependent parton distributions in polarized hadron collisions.

Findings

Derived angular distribution formulas for polarized dilepton production.

Calculated structure functions within the parton model approximation.

Applicable to low transverse momentum regimes in hadron collisions.

Abstract

In this paper we present a comprehensive formalism for dilepton production from the collision of two polarized spin-$\tfrac{1}{2}$ hadrons by identifying the general angular distribution of the cross section in combination with a complete set of structure functions. The various structure functions are computed in the parton model approximation where we mainly consider the case when the transverse momentum of the dilepton pair is much smaller than its invariant mass. In this kinematical region dilepton production can be described in terms of transverse momentum dependent parton distributions.