Dark Vector Boson Bremsstrahlung: New Form Factors for a Broader Class of Models
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| Format: | Preprint |
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2025
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| _version_ | 1866911154906857472 |
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| author | Kling, Felix Reimitz, Peter Ritz, Adam |
| author_facet | Kling, Felix Reimitz, Peter Ritz, Adam |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_09437 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dark Vector Boson Bremsstrahlung: New Form Factors for a Broader Class of Models Kling, Felix Reimitz, Peter Ritz, Adam High Energy Physics - Phenomenology 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. |
| title | Dark Vector Boson Bremsstrahlung: New Form Factors for a Broader Class of Models |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2509.09437 |