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Light long-lived particles at the FCC-hh with the proposal for a dedicated forward detector FOREHUNT and a transverse detector DELIGHT

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arxiv 2306.11803 v2 pith:VDSRTPD5 submitted 2023-06-20 hep-ph hep-ex

Light long-lived particles at the FCC-hh with the proposal for a dedicated forward detector FOREHUNT and a transverse detector DELIGHT

Biplob Bhattacherjee , Herbi K. Dreiner , Nivedita Ghosh , Shigeki Matsumoto , Rhitaja Sengupta , Prabhat Solanki This is my paper
classification hep-ph hep-ex
keywords detectordecayforwarddelightfcc-hhforehuntlightlong-lived
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In this paper, we propose a dedicated forward detector, FOREHUNT (FORward~Experiment~for~HUNdred~TeV), for 100 TeV FCC-hh for the detection of light long-lived particles (LLP) coming from $B$-meson decay. We calculate the signal acceptance as a function of mass and proper decay length of the LLP for 100 TeV and interpret our result in terms of model parameters for models of dark Higgs scalar and heavy neutral leptons. We also compare the sensitivity with proposed transverse detectors like MATHUSLA, CODEX-b for HL-LHC, and DELIGHT (Detector for long-lived particles at high energy of 100 TeV) for FCC-hh. Our analysis reveals that if the LLP is light ($\lesssim 4.4$ GeV) and has a low proper decay length ($<10$ m), a forward detector like FOREHUNT is the best option to look for the decaying LLP, while DELIGHT is preferable for higher proper decay lengths.

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Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. A new approach to long-lived particle detection at hadron colliders: the $\textsf{DELIGHT-SHIELD}$ concept

    hep-ph 2026-04 unverdicted novelty 6.0

    DELIGHT-SHIELD uses a dedicated shield followed by tracking to suppress hadronic and electromagnetic backgrounds by up to seven orders of magnitude, reaching branching ratio sensitivity of O(10^{-9}) for h to phi phi ...

  2. Reheating the FCC: Probing Early Matter Domination with Long-Lived Particles

    hep-ph 2026-07 conditional novelty 5.0

    FCC-hh displaced-vertex searches could probe Higgs-portal scalars whose decays ended an early matter-dominated era at temperatures from ~1 GeV to the electroweak scale.

  3. Can LLP detectors probe the reheating temperature? A case study of vector dark matter

    hep-ph 2026-04 unverdicted novelty 5.0

    In a vector dark matter extension of the Higgs portal, far detectors at colliders can probe otherwise inaccessible parameter space and set novel bounds on the reheating temperature.