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  • Letter
  • Open Access

First neutrino interaction candidates at the LHC

Henso Abreu1, Yoav Afik1, Claire Antel2, Jason Arakawa3, Akitaka Ariga4,5, Tomoko Ariga6,*, Florian Bernlochner7, Tobias Boeckh7, Jamie Boyd8 et al. (FASER Collaboration)

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 Scampoli4,21, 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
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Phys. Rev. D 104, L091101 – Published 24 November, 2021

DOI: https://doi.org/10.1103/PhysRevD.104.L091101

Abstract

FASERν at the CERN Large Hadron Collider (LHC) is designed to directly detect collider neutrinos for the first time and study their cross sections at TeV energies, where no such measurements currently exist. In 2018, a pilot detector employing emulsion films was installed in the far-forward region of ATLAS, 480 m from the interaction point, and collected 12.2  fb−1 of proton-proton collision data at a center-of-mass energy of 13 TeV. We describe the analysis of this pilot run data and the observation of the first neutrino interaction candidates at the LHC. This milestone paves the way for high-energy neutrino measurements at current and future colliders.

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Outline

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Phys. Rev. D 104, L091101– Published 24 November, 2021
  • Received 13 May 2021
  • Revised 18 July 2021
  • Accepted 26 October 2021
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