The exponent of the superfluid density of 4He near Tsub(Λ)

A new analysis of superfluid density measurements near Tsub(lambda) which includes a regular temperature dependence of the leading amplitude k (P,T) yielded the result zeta = 0.672 +- 0.001 for the exponent of rhosub(s). This work eliminates the small discrepancy between the previous estimate zeta = 0.675 based upon a temperature independent k(P), and the renormalization group estimates of 0.669 +- 0.002 or 0.672 +- 0.002. (orig.)