Soft and hard components of two-particle distributions on (y_t,η,ϕ) from p-p collisions at √(s) = 200 GeV

2004/06/29 by R. J. Porter, Porter, R. J., T. A. Trainor +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0406330

3 pages, 4 figures, Quark Matter 2004 poster writeup

arxiv created 2004/06/29 · arxiv updated 2009/12/01

Abstract

We report measurements of large-scale two-particle correlations for 200 GeV p-p collisions on momentum components transverse rapidity y_t (pion mass assigned), pseudorapidity η and azimuth angle ϕ. In both transverse y_t ⊗ y_t and axial (η⊗η,ϕ⊗ϕ) two-particle subspaces we observe two components of correlation structure (soft and hard) which we interpret respectively in terms of longitudinal string fragmentation and transverse minimum-bias parton fragmentation (minijets). This combination is also represented by Lund-model-based Monte Carlo simulations such as Pythia.

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