Year: 2026
Type: article
Abstract: Since its approval in 2016, NA64 has pioneered Light Dark Matter (LDM) searches with electron [1], positron [2], muon [3], and hadron [4] beams. The experiment has successfully met its primary objectives, as outlined in the EPPS input (2018), and even exceed them producing results that demonstrate its ability to operate in a near background-free environment. The Physics Beyond Collider (PBC) initiative at CERN recognizes NA64’s contributions as complementary and worthy of continued exploration. Its key advantage over beam dump approaches is that the signal rate scales as (coupling)2 rather than (coupling)4, reducing the required beam particles for the same sensitivity.To fully exploit the NA64 physics potential, an upgrade during LS3 will enable NA64 to run in background-free mode at higher SPS beam rates. Planned upgrades include (a) improved detector hermeticity with a new veto hadron calorimeter, (b) enhanced particle identification with a synchrotron radiation detector, and (c) increased beam rates via upgraded electronics. With the recently strengthened NA64 collaboration, stable operations and timely data analysis are planned for LHC Run 4. The expected ∼ 1013 electrons, ∼ 1011 positrons (40 and 60 GeV), and ∼ 2×1013 muons on target will allow NA64 to explore new light dark matter regions, with the potential for discovery or conclusive exclusion of many well-motivated LDM models.
Source: Natural Science Review
Authors: Yu. M. Andreev, A. Antonov, M. A. Ayala Torres, D. Banerjee, B. Banto Oberhauser, V. Bautin, J. Bernhard, P. Bisio, A. Celentano, N. Charitonidis, P. Crivelli, A. V. Dermenev, S. V. Donskov, R. R. Dusaev, V. N. Frolov, S. V. Gertsenberger, S. Girod, S. N. Gninenko, A. V. Ivanov, Y. Kambar, A. E. Karneyeu, G. Kekelidze, B. Ketzer, D. V. Kirpichnikov, M. M. Kirsanov, V. A. Kramarenko, N. V. Krasnikov, S. V. Kuleshov, V. E. Lyubovitskij, A. Marini, L. Marsicano, V. A. Matveev, R. Mena Fredes, R. Mena Yanssen, L. Molina Bueno, M. Mongillo, D. V. Peshekhonov, V. A. Polyakov, B. Radics, K. Salamatin, V. D. Samoylenko, H. Sieber, D. Shchukin, O. Soto, V. O. Tikhomirov, I. Tlisova, A. N. Toropin, M. Tuzi, P. V. Volkov, I. V. Voronchikhin, J. Zamora-Saá, A. S. Zhevlakov
Institutions: Istituto Nazionale di Fisica Nucleare, Sezione di Genova, Millennium Institute for Subatomic Physics at High-Energy Frontier, Saphir, European Organization for Nuclear Research, Institute for Particle Physics and Astrophysics, Joint Institute for Nuclear Research, University of Bonn, Instituto de Física Corpuscular, York University, University of La Serena
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4415023042
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