Phenomenology of GeV-scale scalar portal
Iryna Boiarska (Discovery Center, Niels Bohr Institute, Copenhagen University, Blegdamsvej 17, Copenhagen, DK-2100, Denmark); Kyrylo Bondarenko (Intituut-Lorentz, Leiden University, Niels Bohrweg 2, Leiden, 2333 CA, The Netherlands); Alexey Boyarsky (Intituut-Lorentz, Leiden University, Niels Bohrweg 2, Leiden, 2333 CA, The Netherlands); Volodymyr Gorkavenko (Department of Physics, Taras Shevchenko National University of Kyiv, 64 Volodymyrs’ka str., Kyiv, 01601, Ukraine); Maksym Ovchynnikov (Intituut-Lorentz, Leiden University, Niels Bohrweg 2, Leiden, 2333 CA, The Netherlands); et al - Show all 6 authors
We review and revise the phenomenology of the scalar portal — a new scalar particle with the mass in GeV range that mixes with the Higgs boson. In particular, we consider production channels B → SK 1(1270) and $$ B\to S{K}_0^{\ast }(700) $$ and show that their contribution is significant. We extend the previous analysis by comparing the production of scalars from decays of mesons, of the Higgs bosons and direct production via proton bremsstrahlung, deep inelastic scattering and coherent scattering on nuclei. Relative efficiency of the production channels depends on the energy of the beam and we consider the energies of DUNE, SHiP and LHC-based experiments. We present our results in the form directly suitable for calculations of experimental sensitivities.
