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in creator/contributor: "Sickles, Anne"  
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The Baryon Anomaly: Evidence for Color Transparency and Direct Hadron Production at RHIC

Description: We show that the QCD color transparency of higher-twist contributions to inclusive hadroproduction cross sections, where baryons are produced directly in a short distance subprocess, can explain several remarkable features of high-p{sub T} baryon production in heavy ion collisions which have recently been observed at RHIC: (a) the anomalous increase of the proton-to-pion ratio with centrality (b): the increased power-law fall-off at fixed x{sub T} = 2p{sub T}/{radical}s of the charged particle … more
Date: April 30, 2008
Creator: Brodsky, Stanley J. & Sickles, Anne
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Partner: UNT Libraries Government Documents Department
open access

Higher-Twist Dynamics in Large Transverse Momentum Hadron Production

Description: A scaling law analysis of the world data on inclusive large-p{sub {perpendicular}} hadron production in hadronic collisions is carried out. A significant deviation from leading-twist perturbative QCD predictions at next-to-leading order is reported. The observed discrepancy is largest at high values of x{sub {perpendicular}} = 2p{sub {perpendicular}}/{radical}s. In contrast, the production of prompt photons and jets exhibits the scaling behavior which is close to the conformal limit, in agreeme… more
Date: December 17, 2009
Creator: Arleo, Francois; Brodsky, Stanley J.; Hwang, Dae Sung & Sickles, Anne M.
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Partner: UNT Libraries Government Documents Department
open access

Higher-Twist Contributions to Large Transverse Momentum Hadron Production in hadronic collisions

Description: The scaling behavior of large-p{sub {perpendicular}} hadron production in hadronic collisions is investigated. A significant deviation from the NLO QCD predictions is reported, especially at high values of x{sub {perpendicular}} = 2p{sub {perpendicular}}/{radical}s. In contrast, the prompt photon and jet production data prove in agreement with leading-twist expectations. These results are interpreted as coming from a non-negligible contribution of higher-twist processes, where the hadron is pro… more
Date: August 25, 2010
Creator: Arleo, Francois; /Annecy, LAPTH; Brodsky, Stanley J.; /SLAC /Southern Denmark U., CP3-Origins; Hwang, Dae Sung; U., /Sejong et al.
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Partner: UNT Libraries Government Documents Department
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