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Sep 24 – 29, 2023
US/Eastern timezone

The Backward Angle (u-channel) Exclusive Process at 12 GeV and Future EIC

Sep 26, 2023, 5:28 PM
18m
Meeting Room 3-4 (Durham Convention Center)

Meeting Room 3-4

Durham Convention Center

Talk 3D Structure of the Nucleon: GPDs and Form Factors 3D Structure of the Nucleon: GPDs and Form Factors

Speaker

Mr Wenliang Li (CFNS Stony Brook)

Description

The recent exclusive backward-angle electroproduction of mesons from Jefferson Lab electron-proton fixed-target scattering experiments hints on a new domain of applicability of QCD factorization in a unique u-channel kinematics regime. The interests of studying nucleon structure through u-channel meson production observables have grown significantly.

In the fixed target configuration, the u-channel meson electroproduction observables feature an unique interaction picture: target proton absorbs nearly all momentum induced by virtual photons and recoils forward; while the production mesons (such as omega or pions) are left behind almost at rest near the target station. At Jefferson Lab Hall C, the missing mass reconstruction technique is applied to resolve the produced nucleon; whereas in Hall B and D, the decayed mesons are directly detected. In this presentation, I will provide a summary on the key observations of the existing u-channel meson production results, update-to-date theory insights and a path to further explore u-channel observables from JLab 12 GeV Hall C program to the future Electron Ion Collider.

Primary author

Mr Wenliang Li (CFNS Stony Brook)

Presentation materials