FPF@FCC: neutrino, QCD, and BSM physics opportunities with far-forward experiments at a 100 TeV Proton Collider
Abstract Proton-proton collisions at energy-frontier facilities produce an intense flux of high-energy light particles, including neutrinos, in the forward direction. At the LHC, these particles are currently being studied with the far-forward experiments FASER/FASERν and SND@LHC, while new dedicate...
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| Format: | Article |
| Language: | English |
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2025-01-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP01(2025)094 |
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| author | Roshan Mammen Abraham Jyotismita Adhikary Jonathan L. Feng Max Fieg Felix Kling Jinmian Li Junle Pei Tanjona R. Rabemananjara Juan Rojo Sebastian Trojanowski |
| author_facet | Roshan Mammen Abraham Jyotismita Adhikary Jonathan L. Feng Max Fieg Felix Kling Jinmian Li Junle Pei Tanjona R. Rabemananjara Juan Rojo Sebastian Trojanowski |
| author_sort | Roshan Mammen Abraham |
| collection | DOAJ |
| description | Abstract Proton-proton collisions at energy-frontier facilities produce an intense flux of high-energy light particles, including neutrinos, in the forward direction. At the LHC, these particles are currently being studied with the far-forward experiments FASER/FASERν and SND@LHC, while new dedicated experiments have been proposed in the context of a Forward Physics Facility (FPF) operating at the HL-LHC. Here we present a first quantitative exploration of the reach for neutrino, QCD, and BSM physics of far-forward experiments integrated within the proposed Future Circular Collider (FCC) project as part of its proton-proton collision program (FCC-hh) at s $$ \sqrt{s} $$ ≃ 100 TeV. We find that 109 electron/muon neutrinos and 107 tau neutrinos could be detected, an increase of several orders of magnitude compared to (HL-)LHC yields. We study the impact of neutrino DIS measurements at the FPF@FCC to constrain the unpolarised and spin partonic structure of the nucleon and assess their sensitivity to nuclear dynamics down to x ∼ 10 −9 with neutrinos produced in proton-lead collisions. We demonstrate that the FPF@FCC could measure the neutrino charge radius for ν e and ν μ and reach down to five times the SM value for ν τ . We fingerprint the BSM sensitivity of the FPF@FCC for a variety of models, including dark Higgs bosons, relaxion-type scenarios, quirks, and millicharged particles, finding that these experiments would be able to discover LLPs with masses as large as 50 GeV and couplings as small as 10 −8, and quirks with masses up to 10 TeV. Our study highlights the remarkable opportunities made possible by integrating far-forward experiments into the FCC project, and it provides new motivation for the FPF at the HL-LHC as an essential precedent to optimize the forward physics experiments that will enable the FCC to achieve its full physics potential. |
| format | Article |
| id | doaj-art-5063792a9cd546aaa95771c55ffe6e29 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-5063792a9cd546aaa95771c55ffe6e292025-02-09T12:07:34ZengSpringerOpenJournal of High Energy Physics1029-84792025-01-012025116110.1007/JHEP01(2025)094FPF@FCC: neutrino, QCD, and BSM physics opportunities with far-forward experiments at a 100 TeV Proton ColliderRoshan Mammen Abraham0Jyotismita Adhikary1Jonathan L. Feng2Max Fieg3Felix Kling4Jinmian Li5Junle Pei6Tanjona R. Rabemananjara7Juan Rojo8Sebastian Trojanowski9Department of Physics and Astronomy, University of CaliforniaNational Centre for Nuclear ResearchDepartment of Physics and Astronomy, University of CaliforniaDepartment of Physics and Astronomy, University of CaliforniaDeutsches Elektronen-Synchrotron DESYCollege of Physics, Sichuan UniversityInstitute of High Energy Physics, Chinese Academy of SciencesDepartment of Physics and Astronomy, Vrije Universiteit AmsterdamDepartment of Physics and Astronomy, Vrije Universiteit AmsterdamNational Centre for Nuclear ResearchAbstract Proton-proton collisions at energy-frontier facilities produce an intense flux of high-energy light particles, including neutrinos, in the forward direction. At the LHC, these particles are currently being studied with the far-forward experiments FASER/FASERν and SND@LHC, while new dedicated experiments have been proposed in the context of a Forward Physics Facility (FPF) operating at the HL-LHC. Here we present a first quantitative exploration of the reach for neutrino, QCD, and BSM physics of far-forward experiments integrated within the proposed Future Circular Collider (FCC) project as part of its proton-proton collision program (FCC-hh) at s $$ \sqrt{s} $$ ≃ 100 TeV. We find that 109 electron/muon neutrinos and 107 tau neutrinos could be detected, an increase of several orders of magnitude compared to (HL-)LHC yields. We study the impact of neutrino DIS measurements at the FPF@FCC to constrain the unpolarised and spin partonic structure of the nucleon and assess their sensitivity to nuclear dynamics down to x ∼ 10 −9 with neutrinos produced in proton-lead collisions. We demonstrate that the FPF@FCC could measure the neutrino charge radius for ν e and ν μ and reach down to five times the SM value for ν τ . We fingerprint the BSM sensitivity of the FPF@FCC for a variety of models, including dark Higgs bosons, relaxion-type scenarios, quirks, and millicharged particles, finding that these experiments would be able to discover LLPs with masses as large as 50 GeV and couplings as small as 10 −8, and quirks with masses up to 10 TeV. Our study highlights the remarkable opportunities made possible by integrating far-forward experiments into the FCC project, and it provides new motivation for the FPF at the HL-LHC as an essential precedent to optimize the forward physics experiments that will enable the FCC to achieve its full physics potential.https://doi.org/10.1007/JHEP01(2025)094Neutrino InteractionsDark Matter at CollidersDeep Inelastic Scattering or Small-x PhysicsParton Distributions |
| spellingShingle | Roshan Mammen Abraham Jyotismita Adhikary Jonathan L. Feng Max Fieg Felix Kling Jinmian Li Junle Pei Tanjona R. Rabemananjara Juan Rojo Sebastian Trojanowski FPF@FCC: neutrino, QCD, and BSM physics opportunities with far-forward experiments at a 100 TeV Proton Collider Journal of High Energy Physics Neutrino Interactions Dark Matter at Colliders Deep Inelastic Scattering or Small-x Physics Parton Distributions |
| title | FPF@FCC: neutrino, QCD, and BSM physics opportunities with far-forward experiments at a 100 TeV Proton Collider |
| title_full | FPF@FCC: neutrino, QCD, and BSM physics opportunities with far-forward experiments at a 100 TeV Proton Collider |
| title_fullStr | FPF@FCC: neutrino, QCD, and BSM physics opportunities with far-forward experiments at a 100 TeV Proton Collider |
| title_full_unstemmed | FPF@FCC: neutrino, QCD, and BSM physics opportunities with far-forward experiments at a 100 TeV Proton Collider |
| title_short | FPF@FCC: neutrino, QCD, and BSM physics opportunities with far-forward experiments at a 100 TeV Proton Collider |
| title_sort | fpf fcc neutrino qcd and bsm physics opportunities with far forward experiments at a 100 tev proton collider |
| topic | Neutrino Interactions Dark Matter at Colliders Deep Inelastic Scattering or Small-x Physics Parton Distributions |
| url | https://doi.org/10.1007/JHEP01(2025)094 |
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