We update Jaffe’s estimate of the strange isoscalar radius and magnetic moment of the nucleon. We make use of a recent dispersion–theoretical fit to the nucleon electromagnetic form factors and an improved description of symmetry breaking in the vector nonet. We find µs = −0.24 ± 0.03 n.m. and r2

We consider a simple model for the strangeness radius of the nucleon. The model is based on vector meson dominance (VMD) and ω −φ mixing in addition to a kaon cloud contribution. We find that the VMD contribution is similar in magnitude and of the same sign as the kaon contribution to the Sachs

We present an analytic and parameter-free expression for the momentum dependence of the strange magnetic form factor of the nucleon G (s) M (Q2) and its corresponding radius which has been derived in Heavy Baryon Chiral Perturbation Theory. We also discuss a model-independent relation between

72. [115] F. Wirth, Dynamics of time-varying discrete-time linear systems: Spectral theory and the projected system, SIAM J. Control Optim., 36(2), (1998):447-487. [116] F. Wirth, On stability of in [110] J.N. Tsitsiklis and V. Blondel, The Lyapunov exponent and joint spectral radius of pairs

We investigate, at both zero and finite temperature, the properties of strangelets versus the electric charge Z and strangeness S. The strangelet radius is not a monotonic function of either charge or strangeness, and a minimum is reached in the (Z, S) plane. However, the thermodynamically stable

The leading non-zero electric moment of the nucleon strange-quark vector 〉. We evaluate the lightest current is the mean square strangeness radius, 〈r2 s OZI-allowed contribution to 〈r2 s〉, arising from the kaon cloud, using dispersion relations. Drawing upon unitarity constraints as well as K + N

The nucleon strange vector and isoscalar electromagnetic form factors are studied using a spectral decomposition. The K ¯ K contribution to the electric and magnetic radii as well as the magnetic moment is evaluated to all orders in the strong interaction using an analytic continuation

We show that coherent η and η ′ photoproduction by means of the Primakoff Effect on the proton depends on the strange component of the neutral axial current coupling. We construct polarization asymmetries that are sensitive to this coupling through the γ −Z interference. The η ′ is not a Goldstone

Using heavy baryon chiral perturbation theory to one loop, we derive an analytic and parameter–free expression for the momentum dependence of the strange magnetic form factor of the nucleon G (s) M (Q 2) and its corresponding radius. This should be considered as a lower bound. We also derive a

Strange matrix elements of the nucleon are calculated within the light-cone formulation of the meson cloud model. The Q 2 dependence of the strange vector and axial vector form factors is computed, and the strangeness radius and magnetic moment extracted, both of which are found to be very small