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Flavour models with three Higgs generations |
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| Authors: | Florian Hartmann Wolfgang Kilian |
| Affiliation: | 1. St. Petersburg Nuclear Physics Institute, 188350, Gatchina, Russia 2. INFN-Sezione di Milano Bicocca, 20126, Milano, Italy 3. Dipartimento di Fisica, Università di Milano-Bicocca, 20126, Milano, Italy 4. INFN-Laboratori Nazionali del Gran Sasso, Assergi, 67100, L’Aquila, Italy 5. Gran Sasso Science Institute, INFN, 67100, L’Aquila, AQ, Italy 6. Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA 7. INFN-Sezione di Roma, 00185, Rome, Italy 8. Dipartimento di Fisica, Università di Roma La Sapienza, 00185, Rome, Italy |
| Abstract: | A search for axioelectric absorption of solar axions produced in the (p + d rightarrow {^3mathrm {He}}+gamma (5.5~mathrm {MeV})) reaction has been performed with a BGO detector placed in a low-background setup. A model-independent limit on the combination of axion–nucleon and axion–electron coupling constants has been obtained: (| g_{Ae}times g_{AN}^3|< 1.9times 10^{-10}) for 90 % confidence level. The constraint of the axion–electron coupling constant has been obtained for hadronic axion with masses of (0.1–1) MeV: (|g_{Ae}| le (0.96 - 8.2)times 10^{-8}) . |
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