Search for hadronic decays of feebly-interacting particles at NA62

Eduardo Cortina, J. Jerhot, N. Lurkin, T. Numao, B. Velghe, V. W. S. Wong, Douglas A. Bryman, Z. Hives, Tomáš Husek, Karol Kampf

90 more authors

Marián Kolesár, M. Koval, B. De Martino, Mathieu Perrin-Terrin, L. Petit, Babette Döbrich, S. Lezki, Josef Schubert, Atakan Tugberk Akmete, R. Aliberti, M. Ceoletta, L. Di Lella, N. Doble, Letizia Peruzzo, C. Polivka, S. Schuchmann, H. Wahl, R. Wanke, P. Dalpiaz, R. Negrello, I. Neri, Ferruccio Carlo Petrucci, M. Soldani, L. Bandiera, N. Canale, Angelo Cotta Ramusino, A. Gianoli, M. Romagnoni, Alexei Sytov, M. Lenti, P. Lo Chiatto, Ilaria Panichi, Giuseppe Ruggiero, A. Bizzeti, F. Bucci, A. Antonelli, V. Kozhuharov, GAIA LANFRANCHI, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, Fabio Ambrosino, Mariaelena D’Errico, R. Fiorenza, M. Francesconi, R. Giordano, P. Massarotti, Marco Mirra, M. Napolitano, Ilaria Rosa, G. Saracino, G. Anzivino, P. Cenci, V. Duk, R. Lollini, P. Lubrano, Monica Pepe, Mauro Piccini, Flavio Costantini, M. A. Giorgi, Silvia Giudici, G. Lamanna, E. Lari, E. Pedreschi, Jacopo Pinzino, M. Sozzi, R. Fantechi, Franco Spinella, I. Mannelli, Mauro Raggi, A. Biagioni, Paolo Cretaro, Ottorino Frezza, A. Lonardo, M. Turisini, P. Vicini, Roberto Ammendola, Vincenzo Bonaiuto, A. Fucci, Andrea Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, Ezio A. Menichetti, Ernesto Migliore, C. Biino, A. Filippi, F. Marchetto, Dario Soldi

2025

Full text Open access: Gold Metadata (CSL-JSON)
DOI 10.1140/epjc/s10052-025-14133-w
Data confidence 70 medium
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Abstract

Abstract The NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, including dark photons, dark scalars, and axion-like particles, may be produced in the absorber and decay in the instrumented volume beginning approximately 80 m downstream of the dump. A search for these particles decaying in flight to hadronic final states is reported, based on an analysis of a sample of $$1.4 \times 10^{17}$$ 1.4 × 10 17 protons on dump collected in 2021. No evidence of a New Physics signal is observed, excluding new regions of parameter spaces of multiple models.