2012: Search for solar axions produced in the p(d,3He)A reaction with Borexino detector

Phys. Rev. D 85, 092003 (2012)

G. Bellini et al. (Borexino Collaboration) M. Wójcik, G. Zuzel, M. Misiaszek

Download: http://prd.aps.org/abstract/PRD/v85/i9/e092003


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