TY - JOUR
T1 - Measuring TeV neutrinos with FASER? in LHC Run 3
AU - the FASER Collaboration
AU - Ariga, Tomoko
N1 - Funding Information:
The collaboration acknowledges CERN for the excellent performance of the LHC and the technical and administrative staff members at all FASER institutions. We gratefully acknowledge invaluable assistance from many groups at CERN, particularly, the Physics Beyond Colliders study group, the ATLAS Collaboration for providing the luminosity value, and the NA65/DsTau Collaboration for providing spare emulsion films for the 2018 run. This work was supported partly by Heising-Simons Foundation Grant Nos. 2018-1135, 2019-1179, and 2020-1840, Simons Foundation Grant No. 623683. This work was supported by JSPS KAKENHI Grant Nos. JP19H01909, JP20H01919, JP20K04004, JP20K23373, a research grant from the Mitsubishi Foundation, and the joint research program of the Institute of Materials and Systems for Sustainability.
Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)
PY - 2021
Y1 - 2021
N2 - Neutrinos from a particle collider have never been directly detected. FASER? at the Large Hadron Collider (LHC) is designed to detect such neutrinos for the first time and study their cross sections at TeV energies-at present, no such measurements are available at such high energies. In 2018, during LHC Run 2, we installed a pilot detector 480-m downstream of the ATLAS interaction point. In this pilot run, proton-proton collision data of 12.2 fb-1 at a center-of-mass energy of 13 TeV were collected. We observed the first candidate vertices, which were consistent with neutrino interactions. A 2.7s excess of neutrino-like signal above the background was measured. This milestone opens a new avenue for studying neutrinos at the existing and future high-energy colliders. During LHC Run 3, which will commence in 2022, we will deploy an emulsion detector with a target mass of 1.1 tons, coupled with the FASER magnetic spectrometer. This will yield ~2,000 ?e, ~6,000 ?µ, and ~40 ?t interactions in the detector. Herein, we present the status and plan of FASER? and report neutrino detection in the 2018 data.
AB - Neutrinos from a particle collider have never been directly detected. FASER? at the Large Hadron Collider (LHC) is designed to detect such neutrinos for the first time and study their cross sections at TeV energies-at present, no such measurements are available at such high energies. In 2018, during LHC Run 2, we installed a pilot detector 480-m downstream of the ATLAS interaction point. In this pilot run, proton-proton collision data of 12.2 fb-1 at a center-of-mass energy of 13 TeV were collected. We observed the first candidate vertices, which were consistent with neutrino interactions. A 2.7s excess of neutrino-like signal above the background was measured. This milestone opens a new avenue for studying neutrinos at the existing and future high-energy colliders. During LHC Run 3, which will commence in 2022, we will deploy an emulsion detector with a target mass of 1.1 tons, coupled with the FASER magnetic spectrometer. This will yield ~2,000 ?e, ~6,000 ?µ, and ~40 ?t interactions in the detector. Herein, we present the status and plan of FASER? and report neutrino detection in the 2018 data.
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M3 - Conference article
AN - SCOPUS:85129367931
SN - 1824-8039
VL - 398
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 248
T2 - 2021 European Physical Society Conference on High Energy Physics, EPS-HEP 2021
Y2 - 26 July 2021 through 30 July 2021
ER -