Volume 17, Issue 1 ((Iranian Journal of Physics Research,spring 2017)                   IJPR 2017, 17(1): 81-90 | Back to browse issues page

DOI: 10.18869/acadpub.ijpr.17.1.81

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Moosavi nejad S M. Gluon fragmentation into a vector charmonium J/psi considering the effect of meson wave function. IJPR. 2017; 17 (1) :81-90
URL: http://ijpr.iut.ac.ir/article-1-2000-en.html

Yazd university , mmoosavi@yazd.ac.ir
Abstract:   (1634 Views)

Studying the production or decay processes of heavy quarkonia (the bound state of heavy quark-antiquark) is a powerful tool to test our understanding of strong interaction dynamics and QCD theory. Fragmentation is the dominant production mechanism for heavy quarkonia with large transverse momentum. The fragmentation refers to the production process of a parton with high transverse momentum which subsequently decays into a heavy quarkonia. In all previous manuscript where the fragmentation functions of heavy mesons or baryons are calculated, authors have used the approximation of a Dirac delta function for the meson wave function. In the present paper by working in a perturbative QCD framework and by considering the effect of meson wave functions we calculate the fragmentation function of a gluon into a spin-triplet S-wave charmonium J/psi.  To consider the real aspect of meson bound state we apply a mesonic wave function which is different of Dirac delta function and is a nonrelativistic limit of the Bethe-Salpeter equation. Finally, we present our numerical results and show that how the proposed wave function improves the previous results.

Full-Text [PDF 36 kb]   (348 Downloads)    
Type of Study: Research | Subject: General

Add your comments about this article : Your username or Email:
Write the security code in the box

Send email to the article author

© 2015 All Rights Reserved | Iranian Journal of Physics Research

Designed & Developed by : Yektaweb

تحت نظارت وف بومی آسپا-وف