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arxiv: 2510.26260 · v1 · pith:4YXYMLLAnew · submitted 2025-10-30 · ✦ hep-ex · hep-ph

Letter of Intent: The Forward Physics Facility

Luis A. Anchordoqui , John K. Anders , Akitaka Ariga , Tomoko Ariga , David Asner , Jeremy Atkinson , Alan J. Barr , Larry Bartoszek
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Brian Batell Hans Peter Beck Florian U. Bernlochner Bipul Bhuyan Jianming Bian Aleksey Bolotnikov Silas Bosco Jamie Boyd Nick Callaghan Gabriella Carini Michael Carrigan Kohei Chinone Matthew Citron Isabella Coronado Peter Denton Albert De Roeck Milind V. Diwan Sergey Dmitrievsky Radu Dobre Monica D'Onofrio Jonathan L. Feng Max Fieg Elena Firu Reinaldo Francener Haruhi Fujimori Frank Golf Yury Gornushkin Kranti Gunthoti Claire Gwenlan Carl Gwilliam Andrew Haas Elie Hammou Daiki Hayakawa Christopher S. Hill Dariush Imani Tomohiro Inada Sune Jakobsen Yu Seon Jeong Kevin J. Kelly Samantha Kelly Luke Kennedy Felix Kling Umut Kose Peter Krack Jinmian Li Yichen Li Steven Linden Ming Liu Kristin Lohwasser Adam Lowe Steven Lowette Toni M\"akel\"a Roshan Mammen Abraham Christopher Mauger Konstantinos Mavrokoridis Josh McFayden Hiroaki Menjo Connor Miraval Keiko Moriyama Toshiyuki Nakano Ken Ohashi Toranosuke Okumura Hidetoshi Otono Vittorio Paolone Saba Parsa Junle Pei Michaela Queitsch-Maitland Mary Hall Reno Sergio Rescia Filippo Resnati Adam Roberts Juan Rojo Hiroki Rokujo Olivier Salin Jack Sander Sai Neha Santpur Osamu Sato Paola Scampoli Ryan Schmitz Matthias Schott Anna Sfyrla Dennis Soldin Albert Sotnikov Anna Stasto George Stavrakis Jacob Steenis David Stuart Juan Salvador Tafoya Vargas Yosuke Takubo Simon Thor Sebastian Trojanowski Yu Dai Tsai Serhan Tufanli Svetlana Vasina Matteo Vicenzi Iacopo Vivarelli Nenad Vranjes Marija Vranjes Milosavljevic Kazuhiro Watanabe Michele Weber Benjamin Wilson Wenjie Wu Tiepolo Wybouw Kin Yip Jaehyeok Yoo Jonghee Yoo
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classification ✦ hep-ex hep-ph
keywords physicsfacilitywillcavernconstructiondetectorsforwardhl-lhc
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The Forward Physics Facility (FPF) is a proposed extension of the HL-LHC program designed to exploit the unique scientific opportunities offered by the intense flux of high energy neutrinos, and possibly new particles, in the far-forward direction. Located in a well-shielded cavern 627 m downstream of one of the LHC interaction points, the facility will support a broad and ambitious physics program that significantly expands the discovery potential of the HL-LHC. Equipped with four complementary detectors -- FLArE, FASER$\nu$2, FASER2, and FORMOSA -- the FPF will enable breakthrough measurements that will advance our understanding of neutrino physics, quantum chromodynamics, and astroparticle physics, and will search for dark matter and other new particles. With this Letter of Intent, we propose the construction of the FPF cavern and the construction, integration, and installation of its experiments. We summarize the physics case, the facility design, the layout and components of the detectors, as well as the envisioned collaboration structure, cost estimate, and implementation timeline.

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Cited by 2 Pith papers

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