Transverse Momentum Dependent Fragmentation and Quark Distribution Functions from the NJL-jet Model

Details Transverse Momentum Dependent Fragmentation and Quark Distribution Functions from the NJL-jet Model Transverse Momentum Dependent Fragmentation and Quark Distribution Functions from the NJL-jet Model

2011-11-07

arxiv.org/abs/1111.1740v2

Phys.Rev.D85:014021,2012

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 17 figures, v2: minor revisions to conform with the published version in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.85.014021

Using the model of Nambu and Jona-Lasinio to provide a microscopic description of both the structure of the nucleon and of the quark to hadron elementary fragmentation functions, we investigate the transverse momentum dependence of the unpolarized quark distributions in the nucleon and of the quark to pion and kaon fragmentation functions. The transverse momentum dependence of the fragmentation functions is determined within a Monte Carlo framework, with the notable result that the average $P_\perp^2$ of the produced kaons is significantly larger than that of the pions. We also find that $$ has a sizable $z$ dependence, in contrast with the naive Gaussian ansatz for the fragmentation functions. Diquark correlations in the nucleon give rise to a non-trivial flavor dependence in the unpolarized transverse momentum dependent quark distribution functions. The $$ of the quarks in the nucleon are also found to have a sizable $x$ dependence. Finally, these results are used as input to a Monte Carlo event generator for semi-inclusive deep inelastic scattering (SIDIS), which is used to determine the average transverse momentum squared of the produced hadrons measured in SIDIS, namely $$. Again we find that the average $P_T^2$ of the produced kaons in SIDIS is significantly larger than that of the pions and in each case $\la P_T^2 \ra$ has a sizable $z$ dependence.

Affiliated with

Also associated with

No associations

Rating

Transverse Momentum Dependent Fragmentation and Quark Distribution Functions from the NJL-jet Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Transverse Momentum Dependent Fragmentation and Quark Distribution Functions from the NJL-jet Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transverse Momentum Dependent Fragmentation and Quark Distribution Functions from the NJL-jet Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-52585