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FASER Papers

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2026-04-23
05:21
The FASER experiment at the Large Hadron Collider / Boyd, Jamie (CERN)
The FASER experiment is located in the Large Hadron Collider (LHC) complex at CERN, 480 m downstream of the ATLAS collision point and aligned with the beam-collision-axis. [...]
arXiv:2604.19199. - 56.
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2026-02-21
05:00
Momentum Measurement of Charged Particles in FASER's Emulsion Detector at the LHC / FASER Collaboration
We present a momentum measurement method based on multiple Coulomb scattering (MCS) in the FASER$ν$ emulsion detector. [...]
arXiv:2602.17575 ; FERMILAB-PUB-26-0060-PPD. - 15.
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2025-04-19
04:01
Reconstruction and Performance Evaluation of FASER's Emulsion Detector at the LHC / FASER Collaboration
This paper presents the reconstruction and performance evaluation of the FASER$\nu$ emulsion detector, which aims to measure interactions from neutrinos produced in the forward direction of proton-proton collisions at the CERN Large Hadron Collider. The detector, composed of tungsten plates interleaved with emulsion films, records charged particles with sub-micron precision. [...]
arXiv:2504.13008.- 2025-12-11 - 19 p. - Published in : JINST 20 (2025) P12018 Fulltext: 2504.13008 - PDF; document - PDF;

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2025-02-18
05:16
LHC as a TeV muon beam dump: Muonphilic scalars at FASER / Mammen Abraham, Roshan (UC, Irvine) ; Fieg, Max (UC, Irvine)
The FASER experiment was designed to study long-lived dark sector particles and neutrinos traveling in the forward direction at the LHC. Neutrinos are predominantly produced from meson decays, which also result in an intense energetic flux of muons in the forward direction regularly observed by FASER. [...]
arXiv:2501.09071.- 2025-07-01 - 14 p. - Published in : Phys. Rev. D 112 (2025) 015005 Fulltext: 2501.09071 - PDF; document - PDF;

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2024-11-19
08:29
First Measurement of the Muon Neutrino Interaction Cross Section and Flux as a Function of Energy at the LHC with FASER / FASER Collaboration
This letter presents the measurement of the energy-dependent neutrino-nucleon cross section in tungsten and the differential flux of muon neutrinos and anti-neutrinos. The analysis is performed using proton-proton collision data at a center-of-mass energy of 13.6 TeV and corresponding to an integrated luminosity of (65.6 ± 1.4) fb−1. [...]
arXiv:2412.03186; CERN-EP-2024-309.- Geneva : CERN, 2025-05-27 - 11 p. - Published in : Phys. Rev. Lett. 134 (2025) 211801 Draft (restricted): PDF; Fulltext: CERN-EP-2024-309 - PDF; 2412.03186 - PDF; publication - PDF;

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2024-10-03
22:22
Shining Light on the Dark Sector - Searches for Axion-like Particles and Other New Physics in Photonic Final States with FASER / FASER Collaboration
The first FASER search for a light, long-lived particle decaying into a pair of photons is reported. The search uses the collected 2022 and 2023 LHC proton-proton collision data at √s = 13.6 TeV, corresponding to an integrated luminosity of 57.7 fb−1 . [...]
arXiv:2410.10363; CERN-EP-2024-262.- Geneva : CERN, 2025-01-31 - 37 p. - Published in : JHEP 2501 (2025) 199 Draft (restricted): PDF; Fulltext: CERN-EP-2024-262 - PDF; 2410.10363 - PDF; document - PDF;

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2024-03-26
07:03
Combination of Measurement Data and Domain Knowledge for Simulation of Halbach Arrays With Bayesian Inference / Fleig, Luisa (CERN ; Darmstadt, Tech. U.) ; Liebsch, Melvin (CERN) ; Russenschuck, Stephan (CERN) ; Schöps, Sebastian (Darmstadt, Tech. U.)
Accelerator magnets made from blocks of permanent magnets in a zero-clearance configuration are known as Halbach arrays. The objective of this work is the fusion of knowledge from different measurement sources (material and field) and domain knowledge (magnetostatics) to obtain an updated magnet model of a Halbach array. [...]
arXiv:2306.12844.- 2024-03 - 4 p. - Published in : IEEE Trans. Magn. 60 (2024) 7200104 Fulltext: 2306.12844 - PDF; document - PDF;

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2024-03-12
21:08
First measurement of the $\nu_e$ and $\nu_\mu$ interaction cross sections at the LHC with FASER’s emulsion detector / FASER Collaboration
This paper presents the first results of the study of high-energy electron and muon neutrino charged-current interactions in the FASER$\nu$ emulsion/tungsten detector of the FASER experiment at the LHC. A subset of the FASER$\nu$ volume, which corresponds to a target mass of 128.6~kg, was exposed to neutrinos from the LHC $pp$ collisions with a centre-of-mass energy of 13.6~TeV and an integrated luminosity of 9.5 fb$^{-1}$. [...]
arXiv:2403.12520; CERN-EP-2024-079.- Geneva : CERN, 2024-07-11 - 12 p. - Published in : Phys. Rev. Lett. 133 (2024) 021802 Draft (restricted): PDF; Fulltext: CERN-EP-2024-079 - PDF; 2403.12520 - PDF; Publication - PDF;

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2024-02-23
04:50
Neutrino Rate Predictions for FASER / FASER Collaboration
The Forward Search Experiment (FASER) at CERN's Large Hadron Collider (LHC) has recently directly detected the first collider neutrinos. Neutrinos play an important role in all FASER analyses, either as signal or background, and it is therefore essential to understand the neutrino event rates. [...]
arXiv:2402.13318.- 2024-07-01 - 19 p. - Published in : Phys. Rev. D 110 (2024) 012009 Fulltext: PDF;

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2024-02-07
14:16
Neutrino Rate Predictions for FASER / Boyd, Jamie (CERN) /FASER
The Forward Search Experiment (FASER) at CERN’s Large Hadron Collider (LHC) has recently directly detected the first collider neutrinos. Neutrinos play an important role in all FASER analyses, either as signal or background, and it is therefore essential to understand the neutrino event rates. [...]
CERN-EP-2024-036.- Geneva : CERN, 2024 - 18. Draft (restricted): PDF; Fulltext: PDF;

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