2017
DOI: 10.1103/physrevd.96.115024
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Explanation of the 17 MeV Atomki anomaly in a U(1) -extended two Higgs doublet model

Abstract: Motivated by an anomaly observed in the decay of an excited state of Beryllium ( 8 Be) by the Atomki collaboration, we study an extension of the Standard Model with a gauged U (1) ′ symmetry in presence of a 2-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) ′ cha… Show more

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Cited by 64 publications
(49 citation statements)
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“…GeV, and considering that Weinberg's angle has the experimental value sin 2 θ W 0.23, the parametrization (15) gives us the masses of W ± ,Z andZ in terms of the fundamental constants. Thus, the W-mass is given like in the electroweak model…”
Section: The Tev-physics and The Z -Bosonmentioning
confidence: 99%
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“…GeV, and considering that Weinberg's angle has the experimental value sin 2 θ W 0.23, the parametrization (15) gives us the masses of W ± ,Z andZ in terms of the fundamental constants. Thus, the W-mass is given like in the electroweak model…”
Section: The Tev-physics and The Z -Bosonmentioning
confidence: 99%
“…Therefore, an Extended SM with the presence of the X-boson could be described by the unification of the gauge group SU c (3) × SU L (2) × U R (1) Y × U (1) X . Nowadays, there is a huge number of alternative models that describe this unification [11][12][13][14][15][16].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…For instance, it has been shown [19][20][21][22] that in minimal supersymmetric models, the MSSM spectrum induces gauge anomalies when charged under a FN symmetry, such that one must design an extra fermionic spectrum or a Green-Schwarz (GS) mechanism in order to make the model consistent (see e.g. [23][24][25][26][27][28][29][30][31][32][33][34]). One way to do this is to add chiral spectator fermions at the scale where the FN symmetry is broken.…”
Section: Introductionmentioning
confidence: 99%
“…Nevertheless, some proposals to extend the 2HDM via the presence of gauge symmetries have been put forth [43][44][45]. Some were triggered by anomalies in flavor and collider physics [46][47][48] and others devoted to explain neutrino masses via type I seesaw mechanism and absence of flavor changing interactions [49][50][51][52].…”
Section: Introductionmentioning
confidence: 99%