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Factorization for hadronic heavy quarkonium production
Jian-Wei Qiu
We briefly review several models of heavy quarkonium production in hadronic collisions, and discuss the status of QCD factorization for these production models.
QCD Factorization for heavy quarkonium production at collider energies
Jian-Wei Qiu
In this talk, I briefly review several models of the heavy quarkonium production at collider energies, and discuss the status of QCD factorization for these production models.
Single transverse-spin asymmetry in high transverse momentum pion production in pp collisions
Chris Kouvaris, Jian-Wei Qiu, Werner Vogelsang +1
We study the single-spin (left-right) asymmetry in single-inclusive pion production in hadronic scattering. This asymmetry is power-suppressed in the transverse momentum of the pro…
NRQCD Factorization and Velocity-dependence of NNLO Poles in Heavy Quarkonium Production
Gouranga C. Nayak, Jian-Wei Qiu, George Sterman
We study the transition of a heavy quark pair from octet to singlet color configurations at next-to-next-to-leading order (NNLO) in heavy quarkonium production. We show that the in…
One Loop Gluon Gluon Scattering in Light Cone Gauge
J. Qiu
We calculate the one loop amplitudes for the two gluon scattering process in light cone gauge with fermions and scalars circulating in the loop. This extends the earlier works, in…
Open charm tomography of cold nuclear matter
I. Vitev, T. Goldman, M. B. Johnson +1
We study the relative contribution of partonic sub-processes to D meson production and D meson-triggered inclusive di-hadrons to lowest order in perturbative QCD. While gluon fusio…