Neutrino decay confronts the SNO data

Bandyopadhyay, Abhijit ; Choubey, Sandhya ; Goswami, Srubabati (2003) Neutrino decay confronts the SNO data Physics Letters B, 555 (1-2). pp. 33-42. ISSN 0370-2693


Official URL:

Related URL:


We investigate the status of the neutrino decay solution to the solar neutrino problem in the context of the recent results from Sudbury Neutrino Observatory (SNO). We present the results of global χ2-analysis for both two and three generation cases with one of the mass states being allowed to decay and include the effect of both decay and mixing. We find that the Large Mixing Angle (LMA) region which is the currently favoured solution of the solar neutrino problem is affected significantly by decay. We present the allowed areas in the ļm2–tan2θ plane for different allowed values of α and examine how these areas change with the inclusion of decay. We obtain bounds on the decay constant α in this region which implies a rest frame life time τ0/m2 > 8.7 × 10−5 s/eV for the unstable neutrino state. We conclude that the arrival of the neutral current results from SNO further disfavors the neutrino decay solution to the solar neutrino problem leaving a very small window for the decay constant α which could still be allowed.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:108797
Deposited On:01 Feb 2018 04:46
Last Modified:01 Feb 2018 04:46

Repository Staff Only: item control page