Tagging efficiency study of incoherent diffractive vector meson production at the second interaction region at the Electron-Ion Collider

Aschenauer, E. C.; Bazilevsky, A.; Jentsch, A.; Kim, J.; Kiselev, A.; Page, B. S.; Tu, Z.; Ullrich, T.; Wong, C. P.

doi:10.1103/physrevd.111.072013

Tagging efficiency study of incoherent diffractive vector meson production at the second interaction region at the Electron-Ion Collider

Journal Article · Mon Apr 28 00:00:00 EDT 2025 · Physical Review. D.

DOI:https://doi.org/10.1103/physrevd.111.072013· OSTI ID:2564576

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Brookhaven National Laboratory (BNL), Upton, NY (United States)

The Electron-Ion Collider (EIC) is an upcoming accelerator facility aimed at exploring the properties of quarks and gluons in nucleons and nuclei, shedding light on their structure and dynamics. The inaugural experimental apparatus, ePIC (electron-Proton and Ion Collider), is designed as a general-purpose detector to address the National Academy of Sciences and the Nuclear Science Advisory Committee physics program at the EIC. The wider EIC community is strongly supporting a second interaction region and an associated second detector to enhance the full science program. In this study, we evaluate how this second interaction region and detector can be complementary to ePIC. The layout of an interaction region for the second detector offers a secondary focus that provides better forward detector acceptance at scattering angles near θ ~ 0 mrad, which can specifically enhance the exclusive, tagging, and diffractive physics program. Here, this article presents an analysis of a tagging program using the second interaction region layout with incoherent diffractive vector meson production. The current design of the second EIC interaction region is evaluated for its vetoing capabilities of incoherent events required for the study of coherent diffractive measurements. We find an increased vetoing performance compared to the ePIC interaction region, thus improving measurements which are important for the spatial imaging of nucleons and nuclei.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: SC0012704

OSTI ID:: 2564576

Alternate ID(s):: OSTI ID: 2563464

Report Number(s):: BNL--228143-2025-JAAM

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 7 Vol. 111; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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