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Article Dans Une Revue European Physical Journal C: Particles and Fields Année : 2020

Expression of interest for the CODEX-b detector

Victor Coco
  • Fonction : Auteur
Raphael Dumps
  • Fonction : Auteur
Dean J. Robinson
  • Fonction : Auteur

Résumé

This document presents the physics case and ancillary studies for the proposed CODEX-b long-lived particle (LLP) detector, as well as for a smaller proof-of-concept demonstrator detector, CODEX-$\beta $, to be operated during Run 3 of the LHC. Our development of the CODEX-b physics case synthesizes ‘top-down’ and ‘bottom-up’ theoretical approaches, providing a detailed survey of both minimal and complete models featuring LLPs. Several of these models have not been studied previously, and for some others we amend studies from previous literature: In particular, for gluon and fermion-coupled axion-like particles. We moreover present updated simulations of expected backgrounds in CODEX-b’s actively shielded environment, including the effects of shielding propagation uncertainties, high-energy tails and variation in the shielding design. Initial results are also included from a background measurement and calibration campaign. A design overview is presented for the CODEX-$\beta $ demonstrator detector, which will enable background calibration and detector design studies. Finally, we lay out brief studies of various design drivers of the CODEX-b experiment and potential extensions of the baseline design, including the physics case for a calorimeter element, precision timing, event tagging within LHCb, and precision low-momentum tracking.

Dates et versions

hal-02371637 , version 1 (20-11-2019)

Identifiants

Citer

Giulio Aielli, Eli Ben Haim, Roberto Cardarelli, Matthew John Charles, Xabier Cid Vidal, et al.. Expression of interest for the CODEX-b detector. European Physical Journal C: Particles and Fields, 2020, 80 (12), pp.1177. ⟨10.1140/epjc/s10052-020-08711-3⟩. ⟨hal-02371637⟩
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