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Search for solar axions produced in the p(d,3He)A reaction with Borexino detector

Abstract : A search for 5.5 MeV solar axions produced in the p+d→3He+A (5.5 MeV) reaction was performed using the Borexino detector. The Compton conversion of axions to photons, A+e→e+γ; the axioelectric effect, A+e+Z→e+Z; the decay of axions into two photons, A→2γ; and inverse Primakoff conversion on nuclei, A+Z→γ+Z, are considered. Model-independent limits on axion-electron (gAe), axion-photon (gAγ), and isovector axion-nucleon (g3AN) couplings are obtained: |gAe×g3AN|≤5.5×10-13 and |gAγ×g3AN|≤4.6×10-11 GeV-1 at mA<1 MeV (90% confidence level). These limits are 2-4 orders of magnitude stronger than those obtained in previous laboratory-based experiments using nuclear reactors and accelerators.
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Contributor : Sylvie Flores <>
Submitted on : Thursday, March 29, 2012 - 7:33:09 AM
Last modification on : Monday, December 14, 2020 - 9:53:46 AM

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G. Bellini, J. Benziger, D. Bick, G. Bonfini, D. Bravo, et al.. Search for solar axions produced in the p(d,3He)A reaction with Borexino detector. Physical Review D, American Physical Society, 2012, 85, pp.id. 092003. ⟨10.1103/PhysRevD.85.092003⟩. ⟨in2p3-00683511⟩

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