Two scales in Bose-Einstein correlations

Abstract

We argue that the secondaries produced in high energy hadron collisions are emitted by small size sources distributed over a much larger area in impact parameter space occupied by the interaction amplitude. That is, Bose-Einstein correlation of two emitted identical particles should be described by a `two-radii' parametrization ansatz. We discuss the expected energy, charged multiplicity and transverse momentum of the pair (that is, $\sqrt{s},N_{\mathrm{ch}},k_t$) behaviour of both the small and large size components.

Comments: 7 pages, 1 figure