Extracting color octet NRQCD matrix elements from production at the EIC
Recently unpolarized and polarized J/ψ (ϒ) production at the Electron-Ion Collider (EIC) has
been proposed as a new way to extract two poorly known color-octet NRQCD long-distance
matrix elements:⟨ 0| O 8 J/ψ (S 0 1)| 0⟩ and⟨ 0| O 8 J/ψ (P 0 3)| 0⟩. The proposed method
is based on a comparison to open heavy-quark pair production ideally performed at the
same kinematics. In this paper we analyze this proposal in more detail and provide
predictions for the EIC based on the available determinations of the color-octet matrix …
been proposed as a new way to extract two poorly known color-octet NRQCD long-distance
matrix elements:⟨ 0| O 8 J/ψ (S 0 1)| 0⟩ and⟨ 0| O 8 J/ψ (P 0 3)| 0⟩. The proposed method
is based on a comparison to open heavy-quark pair production ideally performed at the
same kinematics. In this paper we analyze this proposal in more detail and provide
predictions for the EIC based on the available determinations of the color-octet matrix …
Recently unpolarized and polarized J/ψ(ϒ) production at the Electron-Ion Collider (EIC) has been proposed as a new way to extract two poorly known color-octet NRQCD long-distance matrix elements: and . The proposed method is based on a comparison to open heavy-quark pair production ideally performed at the same kinematics. In this paper we analyze this proposal in more detail and provide predictions for the EIC based on the available determinations of the color-octet matrix elements. We also propose two additional methods that do not require comparison to open heavy-quark pair production.