Expression of Interest for the CODEX-b Detector
Abstract
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-, 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- 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.
Cite
@article{arxiv.1911.00481,
title = {Expression of Interest for the CODEX-b Detector},
author = {Giulio Aielli and Eli Ben-Haim and Roberto Cardarelli and Matthew John Charles and Xabier Cid Vidal and Victor Coco and Biplab Dey and Raphael Dumps and Jared A. Evans and George Gibbons and Olivier Le Dortz and Vladimir V. Gligorov and Philip Ilten and Simon Knapen and Jongho Lee and Saul López Soliño and Benjamin Nachman and Michele Papucci and Francesco Polci and Robin Quessard and Harikrishnan Ramani and Dean J. Robinson and Heinrich Schindler and Michael D. Sokoloff and Paul Swallow and Riccardo Vari and Nigel Watson and Mike Williams},
journal= {arXiv preprint arXiv:1911.00481},
year = {2021}
}
Comments
99 pages, 36 figures. Journal version