Correlation structures from soft and semi-hard components in p-p collisions at √s =200 GeV

Journal Article · Tue Feb 01 00:00:00 EST 2005 · Acta Physica Polonica. Series B

OSTI ID:1407044

Porter, R. J. ^[1]; Trainor, T. A. ^[1]

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1. Univ. of Washington, Seattle, WA (United States)

We present preliminary two-particle correlations for unidentified hadrons in p-p collisions at √s =200 GeV. On two-particle transverse rapidity space y t Ⓧ y t two distinct regions of correlated pairs are observed: a peaked structure at low y t (P t ≤ 0.4 GeV/c) and a broad structure at higher y t , where the correlation is distributed as a 2D Gaussian centered at y t1 = y t2 ≃ 2.8 (p t1 , p t2 ≃ 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.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC02-05CH11231
• OSTI ID: 1407044
• Journal Information: Acta Physica Polonica. Series B, Vol. 36; ISSN 0587-4254
• Publisher: Jagiellonian University
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS