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FASER Papers

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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 / Mammen Abraham, Roshan (UC, Irvine) ; Ai, Xiaocong (Zhengzhou U.) ; Anders, John (CERN) ; Antel, Claire (U. Geneva (main)) ; Ariga, Akitaka (Bern U., LHEP ; Chiba U.) ; Ariga, Tomoko (Kyushu U., Fukuoka (main)) ; Atkinson, Jeremy (Bern U., LHEP) ; Bernlochner, Florian U. (U. Bonn (main)) ; Boeckh, Tobias (U. Bonn (main)) ; Boyd, Jamie (CERN) et al.
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, 2024 - 15 p. Draft (restricted): PDF; Fulltext: CERN-EP-2024-309 - PDF; 2412.03186 - 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. [...]
arXiv:2410.10363 ; CERN-EP-2024-262. - 2024 - 37.
Full text - Draft (restricted) - Fulltext

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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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2024-02-07
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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2023-10-10
08:38
The FASER Experiment / Boyd, J (CERN)
FASER is a new, small experiment that was installed into the LHC complex during Long Shutdown 2. It is designed to search for light, long-lived, new particles that could be produced in the LHC collisions and decay inside the detector. [...]
2023 - 7 p. - Published in : 10.1142/9789811280184_0019 Fulltext: PDF;
In : The future of the Large Hadron Collider, pp.281-287

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2023-07-10
14:07
Search for dark photons with the FASER detector at the LHC / FASER collaboration
The FASER experiment at the LHC is designed to search for light, weakly-interacting particles produced in proton-proton collisions at the ATLAS interaction point that travel in the far-forward direction. The first results from a search for dark photons decaying to an electron-positron pair, using a dataset corresponding to an integrated luminosity of $27.0~\mathrm{fb}^{-1}$ collected at center-of-mass energy $\sqrt{s} = 13.6$ TeV in 2022 in LHC Run 3, are presented. [...]
arXiv:2308.05587; CERN-EP-2023-161.- 2023-12-07 - 10 p. - Published in : Phys. Lett. B 848 (2024) 138378 Fulltext: DarkPhoton_PLB_Final - PDF; 2308.05587 - PDF; Publication - PDF;

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2023-03-22
20:29
First Direct Observation of Collider Neutrinos with FASER at the LHC / FASER Collaboration
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. [...]
arXiv:2303.14185; CERN-EP-2023-056.- Geneva : CERN, 2023-07-19 - 9 p. - Published in : Phys. Rev. Lett. 131 (2023) 031801 Draft (restricted): PDF; Fulltext: Publication - PDF; CERN-EP-2023-056 - PDF; 2303.14185 - PDF; External links: BigThink.com article; Slides; Physics Viewpoint

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2022-07-22
22:20
The FASER detector / FASER Collaboration
FASER, the ForwArd Search ExpeRiment, is an experiment dedicated to searching for light, extremely weakly-interacting particles at CERN's Large Hadron Collider (LHC). Such particles may be produced in the very forward direction of the LHC's high-energy collisions and then decay to visible particles inside the FASER detector, which is placed 480 m downstream of the ATLAS interaction point, aligned with the beam collisions axis. [...]
arXiv:2207.11427; CERN-FASER-2022-001.- Geneva : CERN, 2024-05-23 - 85 p. - Published in : JINST 19 (2024) P05066 Fulltext: FASER_Detector_Paper_22.7.22 - PDF; 2207.11427 - PDF; Publication - PDF;
In : The Large Hadron Collider and The Experiments for Run 3

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2021-12-22
04:09
The tracking detector of the FASER experiment / FASER Collaboration
FASER is a new experiment designed to search for new light weakly-interacting long-lived particles (LLPs) and study high-energy neutrino interactions in the very forward region of the LHC collisions at CERN. The experimental apparatus is situated 480 m downstream of the ATLAS interaction-point aligned with the beam collision axis. [...]
arXiv:2112.01116.- 2022-07-01 - 49 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1034 (2022) 166825 Fulltext: 2112.01116 - PDF; Publication - PDF;

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