Double-transverse spin asymmetries at NLO

We report on a next-to-leading order QCD calculation of the cross section and the spin asymmetry for isolated large-p_T prompt photon production in collisions of transversely polarized protons. Corresponding measurements may be used at RHIC to determine the transversity parton distributions of the proton.Comment: 3 pages, LaTeX, 1 figure as eps file. Invited talk presented by W. Vogelsang at the "Conference on the Intersections of Particle and Nuclear Physics (CIPANP 2003)", New York City, May 19-24, 200

The resummed Higgs boson transverse momentum distribution at the LHC

We apply QCD resummation techniques to study the transverse momentum distribution of Higgs bosons produced via gluon-gluon fusion at the LHC. In particular we focus on the joint resummation formalism which resums both threshold and transverse momentum corrections simultaneously. A comparison of results obtained in the joint and the standard recoil resummation frameworks is presented.Comment: 9 pages, 1 figure, uses appolb.cls. Contribution to the Proceedings of XXVII International Conference of Theoretical Physics, Ustron, Poland, September 15-21, 2003. To appear in Acta Physica Polonica

Electroweak vector boson production in joint resummation

We study the application of the joint resummation to electroweak boson production at hadron colliders. The joint resummation formalism resums both threshold and transverse momentum corrections to the transverse momentum distribution at next-to-leading logarithmic accuracy. We obtain a good description of the transverse momentum distribution of Z bosons produced at the Tevatron collider.Comment: 5 pages, 2 figures. Talk presented by A. Kulesza at the XXXVIIth Rencontres de Moriond `QCD and high energy hadronic interactions', Les Arcs, Franc

Next-to-leading Order QCD Corrections to A_TT for Single-Inclusive Hadron Production

We report on a calculation of the next-to-leading order QCD corrections to the partonic cross sections contributing to single-inclusive high-p_T hadron production in collisions of transversely polarized hadrons. We give some predictions for the double spin asymmetry A_TT^\pi for the proposed experiments at RHIC and at the GSI.Comment: Presented at DIS 2005, Madison, Wisconsin, USA, April 27-May 1, 200

Transverse-spin physics: Highlights and news

We describe a few of the recent theory highlights in the field of transverse-spin physics

Parton Distributions from Photoproduction in Polarized ep Scattering at HERA

We study photoproduction of jets and single-inclusive hadrons in a polarized ep collider mode of HERA at sqrt(s)=300 GeV, examining the sensitivity of the cross sections and their asymmetries to the proton's polarized gluon distribution and to the completely unknown parton distributions of polarized photons. We also present for the first time the NLO corrections to the direct part of polarized single-inclusive hadron photoproduction.Comment: 10 Pages, LaTeX, 7 figures as eps files, Invited talk presented at the workshop `Deep Inelastic Scattering off Polarized Targets: Theory Meets Experiment', Zeuthen, Germany, September 1-5, 199