@Article{Kalliokoski_etal2024,
author="Kalliokoski, M.
and Mitsou, V. A.
and de Montigny, M.
and Mukhopadhyay, A.
and Ouimet, P. P. A.
and Pinfold, J.
and Shaa, A.
and Staelens, M.",
title="Searching for minicharged particles at the energy frontier with the MoEDAL-MAPP experiment at the LHC",
journal="Journal of High Energy Physics",
year="2024",
publisher="Springer",
volume="04",
number="4",
pages="137--22pp",
optkeywords="Dark Matter at Colliders; Models for Dark Matter; New Gauge Interactions; Specific BSM Phenomenology",
abstract="The MoEDAL{\textquoteright}s Apparatus for Penetrating Particles (MAPP) Experiment is designed to expand the search for new physics at the LHC, significantly extending the physics program of the baseline MoEDAL Experiment. The Phase-1 MAPP detector (MAPP-1) is currently undergoing installation at the LHC{\textquoteright}s UA83 gallery adjacent to the LHCb/MoEDAL region at Interaction Point 8 and will begin data-taking in early 2024. The focus of the MAPP experiment is on the quest for new feebly interacting particles -- avatars of new physics with extremely small Standard Model couplings, such as minicharged particles (mCPs). In this study, we present the results of a comprehensive analysis of MAPP-1{\textquoteright}s sensitivity to mCPs arising in the canonical model involving the kinetic mixing of a massless dark U(1) gauge field with the Standard Model hypercharge gauge field. We focus on several dominant production mechanisms of mCPs at the LHC across the mass-mixing parameter space of interest to MAPP: Drell-Yan pair production, direct decays of heavy quarkonia and light vector mesons, and single Dalitz decays of pseudoscalar mesons. The 95{\%} confidence level background-free sensitivity of MAPP-1 for mCPs produced at the LHC{\textquoteright}s Run 3 and the HL-LHC through these mechanisms, along with projected constraints on the minicharged strongly interacting dark matter window, are reported. Our results indicate that MAPP-1 exhibits sensitivity to sizable regions of unconstrained parameter space and can probe effective charges as low as 8 x 10 -4 e and 6 x 10 -4 e for Run 3 and the HL-LHC, respectively.",
optnote="WOS:001232666600002",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=6148), last updated on Fri, 21 Jun 2024 09:49:29 +0000",
issn="1029-8479",
doi="10.1007/JHEP04(2024)137",
opturl="https://arxiv.org/abs/2311.02185",
opturl="https://doi.org/10.1007/JHEP04(2024)137",
language="English"
}