Prospects for F_L^D Measurements at HERA-II

TL;DR

This paper explores the potential for measuring the longitudinal diffractive structure function F_L^D at HERA-II, demonstrating feasibility through simulations that account for systematic uncertainties.

Contribution

It provides a detailed survey of measurement methods and shows that F_L^D can be measured with significant confidence at HERA-II using the H1 detector.

Findings

Measurements could reach up to 4 sigma significance

Systematic errors are the main limiting factor

Feasibility depends on reduced proton beam energy

Abstract

The theoretical interest in the longitudinal diffractive structure function F_L^D is briefly motivated and possible measurement methods are surveyed. A simulation based on realistic scenarios with a reduced proton beam energy at HERA-II using the H1 apparatus shows that measurements are possible with up to 4 sigma significance, limited by systematic errors.