The Transverse Cross Section in Exclusive Vector-Meson Production
J.R. Cudell, I. Royen
TL;DR
This paper demonstrates that models incorporating off-shell quarks better explain the transverse to longitudinal cross section ratio in exclusive vector-meson production at HERA, challenging on-shell assumptions.
Contribution
It introduces a simple off-shell quark model that successfully reproduces experimental data, advancing understanding of meson production mechanisms.
Findings
Off-shell quark models match experimental ratios
On-shell models fail to reproduce the data
Provides a new perspective on meson structure in high-energy processes
Abstract
We show that the ratio of the transverse to the longitudinal cross sections observed at HERA cannot be reproduced by models which assume that the meson can be described by an on-shell q qbar pair. We explain how a simple model allowing off-shell (anti)quarks can naturally lead to agreement with experiment.
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Taxonomy
TopicsAdvanced Numerical Analysis Techniques · Metallurgy and Material Forming · Manufacturing Process and Optimization