Form Factor Near the Mass Shell

Table 1

Lorentz scalar isospin mean square radius of the pion, as determined using (43). The phase-shift analyses of [27–29] are used; (a) and (b) denote nonequivalent datasets of scattering phases. is the maximum energy up to which the phase analysis is performed.

[fm^2]	[GeV]	References
		[27]
		[28] (a)
		[28] (b)
		[29] (a)
		[29] (b)