Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/70838
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Type: | Journal article |
Title: | Transverse-momentum-dependent fragmentation and quark distribution functions from the Nambu-Jona-Lasinio-jet model |
Author: | Matevosyan, H. Bentz, W. Cloet, I. Thomas, A. |
Citation: | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2012; 85(1):014021-1-014021-13 |
Publisher: | American Physical Soc |
Issue Date: | 2012 |
ISSN: | 1550-7998 1550-2368 |
Statement of Responsibility: | Hrayr H. Matevosyan, Wolfgang Bentz, Ian C. Cloët, and Anthony W. Thomas |
Abstract: | 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⊥2 of the produced kaons is significantly larger than that of the pions. We also find that <P⊥2> 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 nontrivial flavor dependence in the unpolarized transverse-momentum-dependent quark distribution functions. The <kT2> 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, <PT2>. Again, we find that the average PT2 of the produced kaons in SIDIS is significantly larger than that of the pions and in each case <PT2> has a sizable z dependence. |
Rights: | ©2012 American Physical Society |
DOI: | 10.1103/PhysRevD.85.014021 |
Grant ID: | http://purl.org/au-research/grants/arc/FL0992247 http://purl.org/au-research/grants/arc/CE110001004 (CoEPP) |
Published version: | http://dx.doi.org/10.1103/physrevd.85.014021 |
Appears in Collections: | Aurora harvest Physics publications |
Files in This Item:
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hdl_70838.pdf | Published version | 1.43 MB | Adobe PDF | View/Open |
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