Technical Proposal for FASER: ForwArd Search ExpeRiment at the LHC

Ariga, A.; Ariga, T.; Boyd, J.; Cadoux, F.; Casper, D.; Cerutti, F.; Danzeca, Salvatore; Dougherty, L.A.; Favre, Y.; Feng, Jonathan L.; Ferrère, D.; Gall, J.; Galon, Iftah; González-Sevilla, S.; Hsu, S.‐C.; Iacobucci, G.; Kajomovitz, E.; Kling, Felix; Kuehn, S.; Lamont, Mike; Levinson, L. J.; Otono, H.; Osborne, John A.; Petersen, B. A.; Sato, Osamu; Sabaté-Gilarte, M.; Schott, M.; Sfyrla, A.; Smolinsky, Jordan; Soffa, A. M.; Takubo, Y.; Thonet, Pierre; Torrence, E.; Trojanowski, Sebastian; Zhang, Gang

doi:10.48550/arxiv.1812.09139

Cited by 87 publications

(168 citation statements)

References 32 publications

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“…Longer lifetimes can be probed in the LHC experiment FASER (Run 3) [15,16] in the beam direction (θ = 0 • ) at a distance z = 480 m from the collision point, and proposed experiments for the high-luminosity LHC era, such as MATHUSLA [17,18], CODEX-b [19] and FASER-2 [20,21]. Fixed-target experiments, such as NA62 [22,23] at the CERN SPS, have sensitivity especially for dark photons with mass less than 1 GeV from π 0 , η, and η meson decays.…”

Section: Introductionmentioning

confidence: 99%

FACET: A new long-lived particle detector in the very forward region of the CMS experiment

Cerci,

Lazic

et al. 2022

Preprint

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We describe a proposal to add a set of very forward detectors to CMS for the high-luminosity era of the Large Hadron Collider to search for beyond the standard model long-lived particles, such as dark photons, heavy neutral leptons, axion-like particles, and dark Higgs bosons. The proposed subsystem is called FACET for Forward-Aperture CMS ExTension, and will be sensitive to any particles that can penetrate at least 50 m of magnetized iron and decay in an 18 m long, 1 m diameter vacuum pipe. The decay products will be measured in detectors using identical technology to the planned CMS Phase-2 upgrade.

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Section: Introductionmentioning

confidence: 99%

FACET: A new long-lived particle detector in the very forward region of the CMS experiment

Cerci,

Lazic

et al. 2022

Preprint

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“…The feasibility of such LHC neutrino measurements has recently been demonstrated by the FASER collaboration, which reported the observation of the first neutrino interaction candidates at the LHC [33]. Building on this experience, the FASERν neutrino detector [16,17], which is part of the FASER experiment [34,35], will start its operation already with the LHC Run 3 in 2022. With a target mass of about 1.2 tons and an anticipated luminosity of 150 fb −1 a total of O(10 4 ) muon neutrino and O(10 3 ) electron neutrino interactions are expected to be observed.…”

Section: Sensitivity To F S With Lhc Neutrino Experimentsmentioning

confidence: 99%

An explanation of the muon puzzle of ultrahigh-energy cosmic rays and the role of the Forward Physics Facility for model improvement

Anchordoqui,

Canal,

Kling

et al. 2022

Preprint

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We investigate the observed muon deficit in air shower simulations when compared to ultrahighenergy cosmic ray (UHECR) data. Based upon the observed enhancement of strangeness production in high-energy hadronic collisions reported by the ALICE Collaboration, the concomitant π ↔ K swap is considered as the keystone to resolve the muon anomaly through its corresponding impact on the shower development. We construct a toy model in terms of the π ↔ K swapping probability F s . We present a parametrization of F s in terms of the pseudorapidity that can accommodate the UHECR data. Looking to the future, we explore potential strategies for model improvement using the massive amounts of data to be collected by LHC neutrino detectors, such as FASERν and experiments at the Forward Physics Facility. We calculate the corresponding sensitivity to F s and show that these experiments will be able to probe the model phase space.

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“…The FASER experiment has been originally proposed to search for light long-lived particles at the LHC [5,[19][20][21][22][23][24][25][26][27]. Placed at its front is a dedicated neutrino detector, called FASERν, which consists of emulsion films interleaved with tungsten plates of total mass 1.2 tons [8,9].…”

Section: Forward Neutrino Fluxes a Experimental Setupmentioning

confidence: 99%

Forward Neutrino Fluxes at the LHC

Kling,

Nevay

2021

Preprint

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With the upcoming Run 3 of the LHC, the FASERν and SND@LHC detectors will start a new era of neutrino physics using the far-forward high-energy neutrino beam produced in collisions at ATLAS. This emerging LHC neutrino physics program requires reliable estimates of the LHC's forward neutrino fluxes and their uncertainties. In this paper we provide a new fast-neutrino flux simulation, implemented as a RIVET module, to address this issue. We present the expected energy distributions going through the FASERν and SND@LHC detectors based on various commonly used event generators, analyze the origin of those neutrinos, and present the expected neutrino event rates.

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Technical Proposal for FASER: ForwArd Search ExpeRiment at the LHC

Cited by 87 publications

References 32 publications

FACET: A new long-lived particle detector in the very forward region of the CMS experiment

FACET: A new long-lived particle detector in the very forward region of the CMS experiment

An explanation of the muon puzzle of ultrahigh-energy cosmic rays and the role of the Forward Physics Facility for model improvement

Forward Neutrino Fluxes at the LHC

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