# FCPPL Quarkonium Production Workshop

March 30, 2017 to April 1, 2017
Peking University
Asia/Shanghai timezone

## Analytical Calculation for the Gluon Fragmentation into Spin-triplet S-wave Quarkonium

Mar 30, 2017, 4:50 PM
30m
Peking University

#### Peking University

B105, West Building of School of Physics (Next to the Metro Station "PKU East Gate", across the street from the main PKU entrance)
Talk Proton-proton collisions

### Speaker

Peng Zhang (Peking University)

### Description

Fragmentation function of gluon to the spin-triplet color-singlet S-wave quarkonium has been calculated numerically earlier in 1992. However, the analytical result is absent because of the complex high dimensional integrals. With the development of the high-loop calculation, we consider to solve the problem with the IBP reduction. I will present our method and the final result, which is compatible with the numerical value before. Furthermore, we give the polarization results and the corresponding relative-$v^2$ corrections.

### Primary authors

Peng Zhang (Peking University) Yan-Qing Ma (Peking Universtiy) Kuang-Ta Chao (Peking University)