Tag: physics

  • Where-is-the-X-17

    Where is the X17? FASER looks for the X17, didn’t find it. Anomaly remains. 5 November 2026 | FASER Collaboration The ATOMKI Anomalies have puzzled physicists for over a decade. The first was first observed in 2015 at the ATOMKI research institute in Hungary, which, when looking at electron-positron pairs produced from de-excitations of Beryllium-8

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  • FASER Briefings

    FASER Briefings Where is the X17? The ATOMKI Anomalies are among the most tantalizing anomalies in particle physics in recent times. The first anomaly was observed in 2015, and others were seen in further measurements, but no satisfactory explanation of these results has been found within the Standard Model. One of the proposed explanations is

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  • Publications of the FASER Collaboration

    Publications of the FASER Collaboration Extracted figures from FASER Collaboration papers FASER Collaboration institution logos: pptx and pdf FASER and FASERnu luminosity recorded (2022-26) PRELIMINARY RESULTS PUBLICATIONS THESES OLD PRELIMINARY RESULTS FASER CONTRIBUTIONS TO EPPSU 2025 FASER CONTRIBUTIONS TO SNOWMASS 2022 SELECTED OTHER PAPERS ABOUT FASER (if your paper discussing FASER’s physics potential is not

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  • Presentations about FASER

    Presentations about FASER

    Presentations about FASER Invitations for conference talks by the FASER Collaboration should be sent to the Co-Spokepersons: Jonathan Feng (UC Irvine), jlf AT uci.eduBrian Petersen (CERN), Brian.Petersen AT cern.ch Meetings, Conferences and Workshops Seminars 30 September 2026

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  • Neutrino program

    Neutrino program

    Neutrino program Since their discovery at a nuclear reactor in 1956, neutrinos have been detected from a variety of sources: beam dump experiments, cosmic ray interactions in the atmosphere, the Sun, the Earth, supernovae, and other astrophysical bodies outside our galaxy. The detection of neutrinos from these many sources has led to profound insights across

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  • BSM program

    BSM program

    BSM program FASER searches for highly displaced signals from light and extremely weakly interacting particles that can be copiously produced in proton-proton collisions at the LHC. The existence of such new particles beyond the Standard Model (BSM) of elementary particles is a core theoretical prediction of many models of fundamental interactions trying to solve some

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  • FASER neutrino detector

    FASER neutrino detector

    FASER neutrino detector To date, no neutrino produced at a particle collider has ever been detected, despite the fact that colliders are copious sources of neutrinos. In LHC Run 3 during 2021-23 at 14 TeV center-of-mass energy, roughly 1011 electron neutrinos, 1012 muon neutrinos, and 109 tau neutrinos (along with comparable numbers of anti-neutrinos) will

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  • Trigger and data acquisition

    Trigger and data acquisition

    Trigger and data acquisition Decays of new light, long-lived particles inside FASER will trigger the detector to store information about the event in the data acquisition (DAQ) system. For redundancy and to detector efficiency measurements, all scintillator layers as well as the calorimeter provide triggering functionality. The scintillator trigger threshold is below that of a

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  • Tracker

    Tracker

    Tracker The FASER tracker has been designed to separate and detect two high-energy, oppositely charged tracks originating from a common vertex in the decay volume. For this purpose, three tracking stations are employed, which are separated by two 1 m-long magnets deflecting the charged particle trajectories. The first tracking station is situated right after the

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  • Magnets

    Magnets

    Magnets To achieve sufficient separation of pairs of oppositely charged, high-energy Standard Model particles originating from decays of new physics particles, FASER is equipped with strong magnets designed and manufactured by the CERN magnet group to fulfill technical requirements dictated by the architecture of the TI12 tunnel. FASER uses 0.55 T permanent dipole magnets (see

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