Observation of Collider Muon Neutrinos with the SND@LHC Experiment

Albanese, R; Alexandrov, A; Alicante, F; Anokhina, A; Asada, T; Battilana, C; Bay, A; Betancourt, C; Biswas, R; Blanco Castro, A; Bogomilov, M; Bonacorsi, D; Bonivento, W M; Bordalo, P; Boyarsky, A; Buontempo, S; Campanelli, M; Camporesi, T; Canale, V; Castro, A; Centanni, D; Cerutti, F; Chernyavskiy, M; Choi, K-Y; Cholak, S; Cindolo, F; Climescu, M; Conaboy, A P; Dallavalle, G M; Davino, D; de Bryas, P T; De Lellis, G; De Magistris, M; De Roeck, A; De Rújula, A; De Serio, M; De Simone, D; Di Crescenzo, A; Dona', R; Durhan, O; Fabbri, F; Fedotovs, F; Ferrillo, M; Ferro-Luzzi, M; Fini, R A; Fiorillo, A; Fresa, R; Funk, W; Garay Walls, F M; Golovatiuk, A; Golutvin, A; Graverini, E; Guler, A M; Guliaeva, V; Haefeli, G J; Helo Herrera, J C; van Herwijnen, E; Iengo, P; Ilieva, S; Infantino, A; Iuliano, A; Jacobsson, R; Kamiscioglu, C; Kauniskangas, A M; Khalikov, E; Kim, S H; Kim, Y G; Klioutchnikov, G; Komatsu, M; Konovalova, N; Kovalenko, S; Kuleshov, S; Lacker, H M; Lantwin, O; Lasagni Manghi, F; Lauria, A; Lee, K Y; Lee, K S; Lo Meo, S; Loschiavo, V P; Marcellini, S; Margiotta, A; Mascellani, A; Miano, A; Mikulenko, A; Montesi, M C; Navarria, F L; Ogawa, S; Okateva, N; Ovchynnikov, M; Paggi, G; Park, B D; Pastore, A; Perrotta, A; Podgrudkov, D; Polukhina, N; Prota, A; Quercia, A; Ramos, S; Reghunath, A; Roganova, T; Ronchetti, F; Rovelli, T; Ruchayskiy, O; Ruf, T; Sabate Gilarte, M; Samoilov, M; Scalera, V; Schneider, O; Sekhniaidze, G; Serra, N; Shaposhnikov, M; Shevchenko, V; Shchedrina, T; Shchutska, L; Shibuya, H; Simone, S; Siroli, G P; Sirri, G; Soares, G; Soto Sandoval, O J; Spurio, M; Starkov, N; Timiryasov, I; Tioukov, V; Tramontano, F; Trippl, C; Ursov, E; Ustyuzhanin, A; Vankova-Kirilova, G; Verguilov, V; Viegas Guerreiro Leonardo, N; Vilela, C; Visone, C; Wanke, R; Yaman, E; Yazici, C; Yoon, C S; Zaffaroni, E; Zamora Saa, J

doi:10.1103/PhysRevLett.131.031802

We report the direct observation of muon neutrino interactions with the SND@LHC detector at the Large Hadron Collider. A dataset of proton-proton collisions at √s=13.6 TeV collected by SND@LHC in 2022 is used, corresponding to an integrated luminosity of 36.8 fb−1. The search is based on information from the active electronic components of the SND@LHC detector, which covers the pseudorapidity region of 7.2 <8.4, inaccessible to the other experiments at the collider. Muon neutrino candidates are identified through their charged-current interaction topology, with a track propagating through the entire length of the muon detector. After selection cuts, 8 νμ interaction candidate events remain with an estimated background of 0.086 events, yielding a significance of about 7 standard deviations for the observed νμ signal.

Observation of Collider Muon Neutrinos with the SND@LHC Experiment / Albanese, R; Alexandrov, A; Alicante, F; Anokhina, A; Asada, T; Battilana, C; Bay, A; Betancourt, C; Biswas, R; Blanco Castro, A; Bogomilov, M; Bonacorsi, D; Bonivento, W M; Bordalo, P; Boyarsky, A; Buontempo, S; Campanelli, M; Camporesi, T; Canale, V; Castro, A; Centanni, D; Cerutti, F; Chernyavskiy, M; Choi, K-Y; Cholak, S; Cindolo, F; Climescu, M; Conaboy, A P; Dallavalle, G M; Davino, D; de Bryas, P T; De Lellis, G; De Magistris, M; De Roeck, A; De Rújula, A; De Serio, M; De Simone, D; Di Crescenzo, A; Dona', R; Durhan, O; Fabbri, F; Fedotovs, F; Ferrillo, M; Ferro-Luzzi, M; Fini, R A; Fiorillo, A; Fresa, R; Funk, W; Garay Walls, F M; Golovatiuk, A; Golutvin, A; Graverini, E; Guler, A M; Guliaeva, V; Haefeli, G J; Helo Herrera, J C; van Herwijnen, E; Iengo, P; Ilieva, S; Infantino, A; Iuliano, A; Jacobsson, R; Kamiscioglu, C; Kauniskangas, A M; Khalikov, E; Kim, S H; Kim, Y G; Klioutchnikov, G; Komatsu, M; Konovalova, N; Kovalenko, S; Kuleshov, S; Lacker, H M; Lantwin, O; Lasagni Manghi, F; Lauria, A; Lee, K Y; Lee, K S; Lo Meo, S; Loschiavo, V P; Marcellini, S; Margiotta, A; Mascellani, A; Miano, A; Mikulenko, A; Montesi, M C; Navarria, F L; Ogawa, S; Okateva, N; Ovchynnikov, M; Paggi, G; Park, B D; Pastore, A; Perrotta, A; Podgrudkov, D; Polukhina, N; Prota, A; Quercia, A; Ramos, S; Reghunath, A; Roganova, T; Ronchetti, F; Rovelli, T; Ruchayskiy, O; Ruf, T; Sabate Gilarte, M; Samoilov, M; Scalera, V; Schneider, O; Sekhniaidze, G; Serra, N; Shaposhnikov, M; Shevchenko, V; Shchedrina, T; Shchutska, L; Shibuya, H; Simone, S; Siroli, G P; Sirri, G; Soares, G; Soto Sandoval, O J; Spurio, M; Starkov, N; Timiryasov, I; Tioukov, V; Tramontano, F; Trippl, C; Ursov, E; Ustyuzhanin, A; Vankova-Kirilova, G; Verguilov, V; Viegas Guerreiro Leonardo, N; Vilela, C; Visone, C; Wanke, R; Yaman, E; Yazici, C; Yoon, C S; Zaffaroni, E; Zamora Saa, J. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 131:3(2023), pp. 031802.1-031802.8. [10.1103/PhysRevLett.131.031802]