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Gluon fragmentation into S-wave heavy quarkonium
- Source :
- Int.J.Mod.Phys. A30 (2015) no.32, 1550179
- Publication Year :
- 2014
-
Abstract
- Fragmentation is the dominant production mechanism for heavy hadronic bound states with large transverse momentum. We numerically calculate the initial $g\rightarrow H(Q\bar{Q})$ fragmentation functions (FFs) using the nonrelativistic QCD factorization approach. Our analytical expression of FFs depends on both the momentum fraction $z$ and the transverse momentum of the gluon, and contains most of the kinematical and dynamical properties of the process. Specifically, using the perturbative QCD we present the FF for a gluon to split into $S$-wave charmonium meson $H_c$ to leading order in the QCD coupling constant.<br />Comment: 7 pages, 5 figures. arXiv admin note: text overlap with arXiv:1307.6351
- Subjects :
- High Energy Physics - Phenomenology
Subjects
Details
- Database :
- arXiv
- Journal :
- Int.J.Mod.Phys. A30 (2015) no.32, 1550179
- Publication Type :
- Report
- Accession number :
- edsarx.1401.5223
- Document Type :
- Working Paper