Jamie Boyd⁸, Lydia Brenner⁸, Franck Cadoux², David W. Casper³, Charlotte Cavanagh⁹, Francesco Cerutti⁸, Xin Chen¹⁰, Andrea Coccaro¹¹, Monica D’Onofrio⁹, Candan Dozen¹⁰, Yannick Favre², Deion Fellers¹², Jonathan L. Feng³, Didier Ferrere², Stephen Gibson¹³, Sergio Gonzalez-Sevilla², Carl Gwilliam⁹, Shih-Chieh Hsu¹⁴, Zhen Hu¹⁰, Giuseppe Iacobucci², Tomohiro Inada¹⁰, Ahmed Ismail¹⁵, Sune Jakobsen⁸, Enrique Kajomovitz¹, Felix Kling¹⁶, Umut Kose⁸, Susanne Kuehn⁸, Helena Lefebvre¹³, Lorne Levinson¹⁷, Ke Li¹⁴, Jinfeng Liu¹⁰, Chiara Magliocca², Josh McFayden¹⁸, Sam Meehan⁸, Dimitar Mladenov⁸, Mitsuhiro Nakamura¹⁹, Toshiyuki Nakano¹⁹, Marzio Nessi⁸, Friedemann Neuhaus²⁰, Laurie Nevay¹³, Hidetoshi Otono⁶, Carlo Pandini², Hao Pang¹⁰, Lorenzo Paolozzi², Brian Petersen⁸, Francesco Pietropaolo⁸, Markus Prim⁷, Michaela Queitsch-Maitland⁸, Filippo Resnati⁸, Hiroki Rokujo¹⁹, Marta Sabaté-Gilarte⁸, Jakob Salfeld-Nebgen⁸, Osamu Sato¹⁹, Paola Scampoli^4,21, Kristof Schmieden²⁰, Matthias Schott²⁰, Anna Sfyrla², Savannah Shively³, John Spencer¹⁴, Yosuke Takubo²², Ondrej Theiner², Eric Torrence¹², Sebastian Trojanowski²³, Serhan Tufanli⁸, Benedikt Vormwald⁸, Di Wang¹⁰, and Gang Zhang¹⁰ (FASER Collaboration)

• ¹Department of Physics and Astronomy, Technion—Israel Institute of Technology, Haifa 32000, Israel
• ²Département de Physique Nucléaire et Corpusculaire, University of Geneva, CH-1211 Geneva 4, Switzerland
• ³Department of Physics and Astronomy, University of California, Irvine, California 92697-4575, USA
• ⁴Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
• ⁵Department of Physics, Chiba University, 1-33 Yayoi-cho Inage-ku, Chiba 263-8522, Japan
• ⁶Kyushu University, Nishi-ku, 819-0395 Fukuoka, Japan
• ⁷Universität Bonn, Regina-Pacis-Weg 3, D-53113 Bonn, Germany
• ⁸CERN, CH-1211 Geneva 23, Switzerland
• ⁹University of Liverpool, Liverpool L69 3BX, United Kingdom
• ¹⁰Department of Physics, Tsinghua University, Beijing, China
• ¹¹INFN Sezione di Genova, Via Dodecaneso, 33–16146, Genova, Italy
• ¹²University of Oregon, Eugene, Oregon 97403, USA
• ¹³Royal Holloway, University of London, Egham, TW20 0EX, United Kingdom
• ¹⁴Department of Physics, University of Washington, P.O. Box 351560, Seattle, Washington 98195-1560, USA
• ¹⁵Oklahoma State University, Stillwater, Oklahoma 74078-3072, USA
• ¹⁶SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
• ¹⁷Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100, Israel
• ¹⁸Department of Physics & Astronomy, University of Sussex, Sussex House, Falmer, Brighton, BN1 9RH, United Kingdom
• ¹⁹Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
• ²⁰Institut für Physik, Universitt Mainz, Mainz, Germany
• ²¹Dipartimento di Fisica “Ettore Pancini,” Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, I-80126 Napoli, Italy
• ²²Institute of Particle and Nuclear Study, KEK, Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan
• ²³Astrocent, Nicolaus Copernicus Astronomical Center Polish Academy of Sciences, ul. Bartycka 18, 00-716 Warsaw, Poland

• ^*Corresponding author. tomoko.ariga@cern.ch