The Future of Quark Matter at RHIC

Projected annual results for heavy particle and high-p_{T} correlation studies at future RHICII luminosities.Comment: 8 pages, 3 figures. Proceedings for Quark Matter 2006, Shanghai, Chin

QCD resummation in hadron production

We present calculations of next-to-leading order and resummed QCD corrections for semi-inclusive deep-inelastic scattering and single-inclusive e+e− annihilation. The resummation is performed to next-to-leading logarithmic accuracy. Knowing these QCD corrections is important in order to extract parton distribution functions and fragmentation functions from present and future data for these reactions. We present phenomenological results relevant for the COMPASS, HERMES, and BELLE experiments

Single-Transverse Spin Asymmetry in Dijet Correlations at Hadron Colliders

We present a phenomenological study of the single-transverse spin asymmetry in azimuthal correlations of two jets produced nearly "back-to-back" in pp collisions at RHIC. We properly take into account the initial- and final-state interactions of partons that can generate this asymmetry in QCD hard-scattering. Using distribution functions fitted to the existing single-spin data, we make predictions for various weighted single-spin asymmetries in dijet correlations that are now readily testable at RHIC.Comment: 14 pages, 2 figure

Dilepton production near partonic threshold in transversely polarized proton-antiproton collisions

It has recently been suggested that collisions of transversely polarized protons and antiprotons at the GSI could be used to determine the nucleon's transversity densities from measurements of the double-spin asymmetry for the Drell-Yan process. We analyze the role of higher-order perturbative QCD corrections in this kinematic regime, in terms of the available fixed-order contributions as well as of all-order soft-gluon resummations. We find that the combined perturbative corrections to the individual unpolarized and transversely polarized cross sections are large. We trace these large enhancements to soft gluon emission near partonic threshold, and we suggest that with a physically-motivated cut-off enhancements beyond lowest order are moderated relative to resummed perturbation theory, but still significant. The unpolarized dilepton cross section for the GSI kinematics may therefore provide information on the relation of perturbative and nonperturbative dynamics in hadronic scattering. The spin asymmetry turns out to be rather robust, relatively insensitive to higher orders, resummation, and the cut-offs.Comment: 23 pages, 19 figures as eps. Some discussion and references added. Final version to appear in Phys. Rev.

The Transformative Effects of Public-Private Partnerships in Cleveland: An Inside View of Good Government under Mayors Voinovich and Jackson

This article focuses on two mayoral-led public-private partnerships designed to renew good government in Cleveland — Mayor George Voinovich’s Operations Improvement Task Force (OITF) (1979-1982) and Mayor Frank Jackson’s Operations Efficiency Task Force (OETF) (2006-2009). The Voinovich OITF public-private partnership enabled Cleveland to “come back” after the city’s 1978 default. The Jackson OETF public-private partnership successfully rightsized Cleveland in relationship to its much smaller population needs during challenging economic times without disruptions in service. The authors use three data sources, including interviews with both mayors and their key partnership managers, to gain a complete inside picture of each mayoral-led public-private partnership. The article concludes with the lessons learned and the governance implications of a mayoral-led public-private partnership in fostering long-term (transformative) administrative change. This article shows how both mayoral-led public-private partnerships quietly transformed Cleveland’s government to meet the demands of fewer resources, greater complexity, more transparency, and more timely decisions in the delivery of public services to citizens