학술논문
First Direct Observation of Collider Neutrinos with FASER at the LHC
Document Type
Working Paper
Author
FASER Collaboration; Abreu, Henso; Anders, John; Antel, Claire; Ariga, Akitaka; Ariga, Tomoko; Atkinson, Jeremy; Bernlochner, Florian U.; Blesgen, Tobias; Boeckh, Tobias; Boyd, Jamie; Brenner, Lydia; Cadoux, Franck; Casper, David W.; Cavanagh, Charlotte; Chen, Xin; Coccaro, Andrea; Desai, Ansh; Dmitrievsky, Sergey; D'Onofrio, Monica; Favre, Yannick; Fellers, Deion; Feng, Jonathan L.; Fenoglio, Carlo Alberto; Ferrere, Didier; Gibson, Stephen; Gonzalez-Sevilla, Sergio; Gornushkin, Yuri; Gwilliam, Carl; Hayakawa, Daiki; Hsu, Shih-Chieh; Hu, Zhen; Iacobucci, Giuseppe; Inada, Tomohiro; Jakobsen, Sune; Joos, Hans; Kajomovitz, Enrique; Kawahara, Hiroaki; Keyken, Alex; Kling, Felix; Köck, Daniela; Kose, Umut; Kotitsa, Rafaella; Kuehn, Susanne; Lefebvre, Helena; Levinson, Lorne; Li, Ke; Liu, Jinfeng; MacDonald, Jack; Magliocca, Chiara; Martinelli, Fulvio; McFayden, Josh; Milanesio, Matteo; Mladenov, Dimitar; Moretti, Théo; Munker, Magdalena; Nakamura, Mitsuhiro; Nakano, Toshiyuki; Nessi, Marzio; Neuhaus, Friedemann; Nevay, Laurie; Otono, Hidetoshi; Pang, Hao; Paolozzi, Lorenzo; Petersen, Brian; Pietropaolo, Francesco; Prim, Markus; Queitsch-Maitland, Michaela; Resnati, Filippo; Rokujo, Hiroki; Ruiz-Choliz, Elisa; Sabater-Iglesias, Jorge; Sato, Osamu; Scampoli, Paola; Schmieden, Kristof; Schott, Matthias; Sfyrla, Anna; Shively, Savannah; Takubo, Yosuke; Tarannum, Noshin; Theiner, Ondrej; Torrence, Eric; Tufanli, Serhan; Vasina, Svetlana; Vormwald, Benedikt; Wang, Di; Welch, Eli; Zambito, Stefano
Source
Published in: Phys.Rev.Lett. 131 (2023) 3, 031801
Subject
Language
Abstract
We report the first direct observation of neutrino interactions at a particle collider experiment. Neutrino candidate events are identified in a 13.6 TeV center-of-mass energy $pp$ collision data set of 35.4 fb${}^{-1}$ using the active electronic components of the FASER detector at the Large Hadron Collider. The candidates are required to have a track propagating through the entire length of the FASER detector and be consistent with a muon neutrino charged-current interaction. We infer $153^{+12}_{-13}$ neutrino interactions with a significance of 16 standard deviations above the background-only hypothesis. These events are consistent with the characteristics expected from neutrino interactions in terms of secondary particle production and spatial distribution, and they imply the observation of both neutrinos and anti-neutrinos with an incident neutrino energy of significantly above 200 GeV.
Comment: Submitted to PRL on March 24 2023
Comment: Submitted to PRL on March 24 2023