Preprint

PUBDB-2026-00404

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dark Vector Boson Bremsstrahlung: New Form Factors for a Broader Class of Models

Kling, F. (Corresponding author)DESY* ; Reimitz, P. ; Ritz, A.

2026

Report No.: UCI-TR-2025-16; arXiv:2509.09437

Abstract: We explore the sensitivity of collider experiments to a broad class of GeV-scale dark vector models of new physics via production in proton and neutron bremsstrahlung and initial state radiation. This is achieved using a new physically motivated model for timelike vector form factors with generic charges for both protons and neutrons, which is fit to a variety of timelike and spacelike data with quantified uncertainties. The production model for both proton and neutron bremsstrahlung is applied to re-cast and extend the reach of existing FASER data to GeV-mass dark photons, U(1)_B, U(1)_{B-L}, and photophobic vectors, as well as forecasts for millicharged particles at FORMOSA.

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project G:(GEPRIS)390833306 - EXC 2121: Das Quantisierte Universum II (390833306) (390833306)

Experiment(s):

1. No specific instrument

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Database coverage:
Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Kling, F. (Corresponding author)DESY* ; Reimitz, P. ; Ritz, A.
Dark vector boson bremsstrahlung: New form factors for a broader class of models
Physical review / D 113(1), 015008 (2026) [10.1103/fxpl-yhc2]2026     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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