General neutrino-scalar couplings appear in many extensions of the Standard Model. We can probe these neutrino-scalar couplings by a leptonic decay of mesons and from a heavy neutrino search. Our analysis improves the present limits to |gₑ|²<1.9×10^-6 and |g_μ|²<1.9×10^-7 at 90% C.L. for massless scalars. For massive scalars, we found for the first time the constraints for g_α² couplings to be 10^-6-10^-1, respectively, for scalar masses between up 100 MeV, and we have no limits for masses above 300 MeV.
No takes yet. Share an insight, caveat, or question.
Pasquini et al. (2016) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: