Motivated by an anomaly observed in the decay of an excited state of Beryllium (Be8) by the Atomki collaboration, we study an extension of the standard model with a gauged U(1)′ symmetry in presence of a two Higgs doublet model structure of the Higgs sector. We show that this scenario complies with a variety of experimental results and is able to explain the potential presence of a resonant spin-1 gauge boson, Z′, with a mass of 17 MeV in the Atomki experimental data, for appropriate choices of U(1)′ charges and Yukawa interactions.
Explanation of the 17 MeV Atomki anomaly in a U (1)′ -extended two Higgs doublet model EXPLANATION of the 17 MeV ATOMKI ANOMALY in A ⋯ LUIGI DELLE ROSE, SHAABAN KHALIL, and STEFANO MORETTI
Delle Rose L.;
2017-01-01
Abstract
Motivated by an anomaly observed in the decay of an excited state of Beryllium (Be8) by the Atomki collaboration, we study an extension of the standard model with a gauged U(1)′ symmetry in presence of a two Higgs doublet model structure of the Higgs sector. We show that this scenario complies with a variety of experimental results and is able to explain the potential presence of a resonant spin-1 gauge boson, Z′, with a mass of 17 MeV in the Atomki experimental data, for appropriate choices of U(1)′ charges and Yukawa interactions.File in questo prodotto:
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