Opportunities for Imaging Light Nuclei with a Second Interaction Region at the Electron-Ion Collider

Abstract

The upcoming Electron-Ion Collider (EIC) will address several outstanding puzzles in modern nuclear physics. Key questions-such as the partonic structure of nucleons and nuclei and the origin of their mass and spin-can be explored through high-energy electron-proton and electron-nucleus collisions. To maximize its scientific reach, the EIC community has advocated for the addition of a second interaction region equipped with a detector complementary to the EIC general purpose collider detector, ePIC. The pre-conceptual design of this interaction region aims to provide a different configuration from the first interaction region, which enhances forward acceptance at very small scattering angles ($\theta \sim 0$ mrad). This machine configuration would significantly benefit exclusive, tagging, and diffractive physics programs, complementing those of the ePIC experiment. In particular, accessing coherent diffractive processes on light nuclei by tagging of the full, intact nucleus is essential for mapping their spatial parton distributions. In this work, we present an exploratory study of the detection capabilities for light nuclei at a second EIC interaction region, with a detailed discussion of the accessible kinematic phase space and its implications for imaging.

8 pages, 7 figures, 1 table

References in corpus (19)

• Deeply Virtual Compton Scattering
• The Color Glass Condensate
• Generalized parton distributions and strong forces inside nucleons and nuclei
• STARlight: A Monte Carlo simulation program for ultra-peripheral collisions of relativistic ions
• The Standard Model of Particle Physics
• HERA Collider Physics
• Exclusive diffractive processes in electron-ion collisions
• Impact parameter dependent S-matrix for dipole-proton scattering from diffractive meson electroproduction
• The exclusive $J/\psi$ process at the LHC tamed to probe the low $x$ gluon
• Exclusive vector meson production at an electron-ion collider
• Investigating saturation effects in ultraperipheral collisions at the LHC with the color dipole model
• Probing short-range correlations in the deuteron via incoherent diffractive $J/\psi$ production with spectator tagging at the EIC
• Investigation of the background in coherent $J/\psi$ production at the EIC
• Deep-inelastic electron-deuteron scattering with spectator nucleon tagging at the electron-ion collider. Extracting free nucleon structure
• BeAGLE: Benchmark $e$A Generator for LEptoproduction in high energy lepton-nucleus collisions
• Exploring Baryon Resonances with Transition Generalized Parton Distributions: Status and Perspectives
• Deep Exclusive Meson Production as a probe to the puzzle of $\Lambda$ hyperon polarization
• Tagging Efficiency Study of Incoherent Diffractive Vector Meson Production at the Second Interaction Region at the Electron-Ion Collider
• Study of deeply virtual Compton scattering at the future Electron-Ion Collider