Journal Article

Measurement of the muon flux at the SND@LHC experiment

Mikulenko, A., Boyarsky, A., Castro, A., Anokhina, A., Reghunath, A., Ramos, S., Vilela, C., Asada, T., Leonardo, N. Viegas Guerreiro, Okateva, N., Bick, D., Golovatiuk, A., Shaposhnikov, M., Wanke, R., Roganova, T., Kuleshov, S., Buontempo, S., Manghi, F. Lasagni, Sekhniaidze, G., Alicante, F., De Serio, M., Kim, S. H., Mascellani, A., Gilarte, M. Sabate, Scalera, V., Rovelli, T., Graverini, E., Shchutska, L., Starkov, N., Miano, A., Visone, C., De Roeck, A., Guler, A. M., Timiryasov, I., Ronchetti, F., Verguilov, V., Albanese, R., Cholak, S., Ferro-Luzzi, M., Bordalo, P., Lacker, H. M., Choi, K. -Y., Shevchenko, V., De Rújula, A., Infantino, A., Marcellini, S., Ogawa, S., Schneider, O., Ursov, E., Fabbri, F., Centanni, D., Khalikov, E., Shibuya, H., Iengo, P., Schmidt-Parzefall, W., Campanelli, M., Herrera, J. C. Helo, Sohn, J. Y., Iuliano, A., Samoilov, M., Park, B. D., Sadykov, Z., Fresa, R., Funk, W., Bogomilov, M., Vankova-Kirilova, G., Saa, J. Zamora, Alexandrov, A., Durhan, O., Loschiavo, V. P., de Bryas, P. T., Hagner, C., Quercia, A., Dallavalle, G. M., van Herwijnen, E., Podgrudkov, D., Serra, N., Sandoval, O. J. Soto, Tramonta

2024

Overview

The Scattering and Neutrino Detector at the LHC (SND@LHC) started taking data at the beginning of Run 3 of the LHC. The experiment is designed to perform measurements with neutrinos produced in proton-proton collisions at the LHC in an energy range between 100 GeV and 1 TeV. It covers a previously unexplored pseudo-rapidity range of 7.2 < η < 8.4 . The detector is located 480 m downstream of the ATLAS interaction point in the TI18 tunnel. It comprises a veto system, a target consisting of tungsten plates interleaved with nuclear emulsion and scintillating fiber (SciFi) trackers, followed by a muon detector (UpStream, US and DownStream, DS). In this article we report the measurement of the muon flux in three subdetectors: the emulsion, the SciFi trackers and the DownStream Muon detector. The muon flux per integrated luminosity through an 18 × 18 cm 2 area in the emulsion is: 1.5 ± 0.1 ( stat ) × 10 4 fb/cm 2 . The muon flux per integrated luminosity through a 31 × 31 cm 2 area in the centre of the SciFi is: 2.06 ± 0.01 ( stat ) ± 0.12 ( sys ) × 10 4 fb/cm 2 The muon flux per integrated luminosity through a 52 × 52 cm 2 area in the centre of the downstream muon system is: 2.35 ± 0.01 ( stat ) ± 0.10 ( sys ) × 10 4 fb/cm 2 The total relative uncertainty of the measurements by the electronic detectors is 6 % for the SciFi and 4 % for the DS measurement. The Monte Carlo simulation prediction of these fluxes is 20–25 % lower than the measured values.

• Publisher: Springer Berlin Heidelberg,Springer,Springer Nature B.V,SpringerOpen
• Subject: Astronomy / Astrophysics and Cosmology / Collisions (Nuclear physics) / Detectors / Elementary Particles / Emulsions / Hadrons / Heavy Ions / Large Hadron Collider / Luminosity / Measurement / Measurement Science and Instrumentation / Monte Carlo method / Monte Carlo simulation / Muons / Neutrinos / Nuclear Energy / Nuclear Physics / Physics / Physics and Astronomy / Protons / Quantum Field Theories / Quantum Field Theory / Regular Article – Experimental Physics / Scintillating fibers / Sensors / String Theory