Dark photon production via inelastic proton bremsstrahlung with Pauli form factor

Dmitry Gorbunov; Ekaterina Kriukova

Dark photon production via inelastic proton bremsstrahlung with Pauli form factor

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arxiv 2409.11089 v1 pith:VXGAL66E submitted 2024-09-17 hep-ph

Dmitry Gorbunov , Ekaterina Kriukova This is my paper · ORCID

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keywords darkprotonbremsstrahlungfactorforminelasticpauliphotons

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We study the production of vector portal mediators, dark photons, with masses in the range 0.4--1.8\,GeV in proton-proton collisions via the process of inelastic proton bremsstrahlung. In contrast to previous studies, we take into account the contribution of Pauli electromagnetic form factor to differential cross section and introduce two new splitting functions of the proton. We show that their contributions can become leading in the mass region 0.9--1.8\,GeV and present the updated estimate for the sensitivity of the future SHiP experiment to visible decays of dark photons.

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The bremsstrahlung-like production of the massive spin-2 dark matter mediator
hep-ph 2024-12 conditional novelty 6.0 of 10

E137 beam-dump data exclude spin-2 dark matter mediator couplings from about 8e-8 to 1e-5 per GeV for mediator masses 100 to 800 MeV, assuming equal electron and photon couplings.

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