تقرير
Searching for Minicharged Particles at the Energy Frontier with the MoEDAL-MAPP Experiment at the LHC
| العنوان: | Searching for Minicharged Particles at the Energy Frontier with the MoEDAL-MAPP Experiment at the LHC |
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| المؤلفون: | Mitsou, Vasiliki A., de Montigny, Marc, Mukhopadhyay, Abhinab, Ouimet, Pierre-Philippe A., Pinfold, James, Shaa, Ameir, Staelens, Michael |
| المصدر: | J. High Energ. Phys. 2024, 137 (2024) |
| سنة النشر: | 2023 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment |
| الوصف: | MoEDAL'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'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$\unicode{x2014}$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'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$\unicode{x2013}$mixing parameter space of interest to MAPP: Drell$\unicode{x2013}$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'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 $8 \times 10^{-4}\:e$ and $6 \times 10^{-4}\:e$ for Run 3 and the HL-LHC, respectively. Comment: 11 pages, 7 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP04(2024)137 |
| URL الوصول: | http://arxiv.org/abs/2311.02185 |
| رقم الأكسشن: | edsarx.2311.02185 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP04(2024)137 |
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