Gluon correlations from a glasma flux-tube model compared to measured hadron correlations on transverse momentum (pt,pt) and angular differences (ηΔ,φΔ)

Trainor, Thomas A.; Ray, R. L.

doi:10.1103/PhysRevC.84.034906

Title: Gluon correlations from a glasma flux-tube model compared to measured hadron correlations on transverse momentum (p_t,p_t) and angular differences (η_Δ,φ_Δ)

Journal Article · Fri Sep 09 00:00:00 EDT 2011 · Physical Review. C. Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.84.034906· OSTI ID:1100715

Trainor, Thomas A.; Ray, R. L.

A glasma flux-tube model has been proposed to explain strong elongation on pseudorapidity η of the same-side two-dimensional (2D) peak in minimum-bias angular correlations from √(^sNN)=200 GeV Au-Au collisions. The same-side peak or “soft ridge” is said to arise from coupling of flux tubes to radial flow whereby gluons radiated transversely from flux tubes are boosted by radial flow to form a narrow structure or ridge on azimuth. In this study we test the theory conjecture by comparing measurements to predictions for particle production, spectra, and correlations from the glasma model and from conventional fragmentation processes. We conclude that the glasma model is contradicted by measured hadron yields, spectra, and correlations, whereas a two-component model of hadron production, including minimum-bias parton fragmentation, provides a quantitative description of most features of the data, although η elongation of the same-side 2D peak remains undescribed.

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Sponsoring Organization:: USDOE

OSTI ID:: 1100715

Journal Information:: Physical Review. C. Nuclear Physics, Journal Name: Physical Review. C. Nuclear Physics Vol. 84 Journal Issue: 3; ISSN 0556-2813

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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Title: Gluon correlations from a glasma flux-tube model compared to measured hadron correlations on transverse momentum (p_t,p_t) and angular differences (η_Δ,φ_Δ)