Search

We present preliminary two-particle correlations for unidentified hadrons in p-p collisions at √s =200 GeV. On two-particle transverse rapidity space yt ⊗ yt two distinct regions of correlated pairs are observed: a peaked structure at low yt (Pt ≤ 0.4 GeV/c) and a broad structure at higher yt, where the correlation is distributed as a 2D Gaussian centered at yt1 = yt2 ≃ 2.8 (pt1, pt2 ≃ 1.2 GeV/c). We select those regions separately, projecting correlations onto momentum- difference variables (ηΔ, φΔ), and observe structures interpretable in the context of string and parton fragmentations from soft and semi-hard components of p-p collisions.