Timelike Compton scattering off the neutron
Marie Bo\"er, Michel Guidal, Marc Vanderhaeghen
TL;DR
This paper investigates the exclusive production of electron-positron pairs on neutrons via Timelike Compton Scattering, aiming to access nucleon GPDs by analyzing various observables in Jefferson Lab energy conditions.
Contribution
It provides comprehensive calculations of unpolarized and spin-dependent observables for the reaction, highlighting their sensitivity to Generalized Parton Distributions.
Findings
Observables show significant sensitivity to GPDs.
Theoretical predictions for spin asymmetries are provided.
Potential for experimental extraction of GPDs at Jefferson Lab.
Abstract
We study the exclusive photoproduction of an electron-positron pair on a neutron target in the Jefferson Lab energy domain. The reaction consists of two processes: the Bethe-Heitler and the Timelike Compton Scattering. The latter process provides potentially access to the Generalized Parton Distributions (GPDs) of the nucleon. We calculate all the unpolarized, single- and double-spin observables of the reaction and study their sensitivities to GPDs.
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Taxonomy
TopicsAtomic and Subatomic Physics Research · Quantum, superfluid, helium dynamics · Nuclear Physics and Applications