Abstract
Neutrinos with non-zero magnetic moments can dissociate deuterium nuclei by a photon exchange, in addition to the weak neutral current process. We calculate the neutrino magnetic moment induced photo-dissociation cross section of deuterium using the equivalent photon method. This process would contribute extra events to the neutral current reaction which is observed with high precision in the salt-phase of SNO experiment. Using the SNO data and the recent laboratory measurements of the 7 Be( p , γ ) 8 B reaction which give a more precise value of the solar 8 B flux we find that the neutrino effective magnetic moment is μ eff 2 =(−2.76±1.46)×10 −16 μ B 2 which can be interpreted as an upper bound | μ eff |<3.71×10 −9 μ B (at 95% C.L.) on the neutrino magnetic moments.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
