PoS - Proceedings of Science
Volume 326 - The International Conference on B-Physics at Frontier Machines (BEAUTY2018) - Session: Future Programme
ATLAS Plans for the High-Luminosity LHC
W. Walkowiak*  on behalf of the ATLAS Collaboration
Full text: pdf
Pre-published on: July 31, 2018
Published on: October 30, 2018
Abstract
Despite the excellent performance of the Large Hadron Collider (LHC) at CERN an upgrade to a High-Luminosity LHC (HL-LHC) with a peak instantaneous luminosity of up to $7.5\times 10^{34}$ fb$^{-1}$ will be required after collecting a total dataset of approximately 300 fb$^{-1}$ by the end of Run 3 (in 2023). The upgrade will substantially increase the statistics available to the experiments for addressing the remaining open puzzles of particle physics. The HL-LHC is expected to start operating in 2026 and to deliver up to 4000 fb$^{-1}$ within twelve years. The corresponding upgrades of the ATLAS detector and the ATLAS beauty physics program at the HL-LHC are being discussed. As examples, preliminary results on the expected sensitivities for the search for CP-violation in the decay channel $B^0_s \to J/\psi\,\phi$ using the parameters $\Delta\Gamma_s$ and $\phi_s$ as well as projections for the branching fractions of the rare decays $B^0_s \to \mu^+\mu^-$ and $B^0\to \mu^+\mu^-$ are provided.
DOI: https://doi.org/10.22323/1.326.0055
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