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This content will become publicly available on May 9, 2026

Title: CODEX-b: Opening New Windows to the Long-Lived Particle Frontier at the LHC : ESPP Update Comprehensive summary
This document is written as a contribution to the European Strategy of Particle Physics (ESPP) update. We offer a detailed overview of current developments and future directions for the CODEX-b detector, which aims to detect long-lived particles beyond the Standard Model. We summarize the scientific motivation for this detector, advances in our suite of simulation and detector optimization frameworks, and examine expected challenges, costs, and timelines in realizing the full detector. Additionally, we describe the technical specifications for the smaller-scale demonstrator detector (CODEX-β) we have installed in the LHCb experimental cavern. Note: Input to the 2026 update of the European Strategy for Particle Physics. 10 pages + references + appendices. 8 figures, 5 tables. This submission draws heavily from the CODEX-b Snowmass contribution (arXiv:2203.07316 ), but makes additional points and is a standalone separate document. arXiv admin note: substantial text overlap with arXiv:2203.07316  more » « less
Award ID(s):
2209769
PAR ID:
10621407
Author(s) / Creator(s):
Publisher / Repository:
arXiv:2505.05952
Date Published:
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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