$\phi$-meson lepto-production near threshold and the strangeness $D$-term

TL;DR

This paper introduces a model for exclusive phi-meson lepto-production near threshold, emphasizing the role of the proton's strangeness gravitational form factors and the sensitivity of the differential cross section to the strangeness D-term.

Contribution

The paper presents a novel model linking phi-meson production to the proton's strangeness gravitational form factors, highlighting the differential cross section as a probe of the strangeness D-term.

Findings

Differential cross section shape is sensitive to the proton's strangeness D-term.

Model connects phi-meson production to the proton's gravitational form factors.

Provides a new method to study the proton's strangeness content.

Abstract

We present a model of exclusive $\phi$-meson lepto-production $ep \to e'p'\phi$ near threshold which features the strangeness gravitational form factors of the proton. We argue that the shape of the differential cross section $d\sigma/dt$ is a sensitive probe of the strangeness D-term of the proton.