Speaker
Description
We study the phenomenology of the hypothetical vector particles, dark photons. The planned experimental searches for these mediators in the fixed-target experiments, such as SHiP, DUNE and T2K, will mainly focus on the dark photon masses about O(1) GeV. The dominant production mechanism for such 0.5-1.5 GeV dark photons in the proton-proton collisions is the bremsstrahlung $pp\rightarrow pp\gamma^\prime$. Although there already exist several approximations for proton bremsstrahlung of a massive particle, it is known that they give incompatible answers.
Thus we revisit the dark photon production via proton bremsstrahlung by explicitly considering the non-zero momentum transfer between protons. We compare the obtained bremsstrahlung cross section with the results of other authors.
The talk is based on the arXiv preprint 2306.15800.
