Probing gluon helicity with heavy flavor at the EIC

Kavli Affiliate: Feng Yuan

| First 5 Authors: Daniele Paolo Anderle, Xin Dong, Felix Hekhorn, Matthew Kelsey, Sooraj Radhakrishnan

| Summary:

We propose a new measurement of the heavy flavor hadron double spin asymmetry
in deep-inelastic scattering at a future Electron-Ion Collider (EIC) to
constrain the polarized gluon distribution function inside the proton.
Statistical projection on $D^0$ meson double spin asymmetry is calculated with
an EIC central detector using an all-silicon tracker and vertexing subsystem. A
first impact study was done by interpreting pseudo-data at next-to-leading
order in QCD. The sensitivity of the experimental observable in constraining
gluon helicity distribution in a wide range of parton momentum fraction $x$ has
been investigated considering different beam energy configurations. This
measurement complements the inclusive spin-dependent structure function
measurement and provides an opportunity to constrain the gluon helicity
distribution in the moderate $x$ region.

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