Fragmentation and quark distribution functions for the pion and kaon with explicit flavor-SU(3)-symmetry breaking

Abstract

We investigate the unpolarized pion and kaon fragmentation functions, employing the nonlocal chiral-quark model, which manifests the nonlocal interactions between the quarks and pseudoscalar mesons, considering the explicit flavor-SU(3)-symmetry breaking in terms of the current-quark masses. Moreover, we study the quark-distribution functions, derived from the fragmentation ones with the Drell-Yan-Levi relation. Numerical results are evaluated to higher Q^2 by the DGLAP evolution and compared with the empirical data. The ratios between the relevant valance quark-distribution functions are also discussed. It turns out that the present results are in relatively good agreement with available data and other theoretical estimations.

13 pages, 16 figures

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Cited by in corpus (11)

• Parton Fragmentation Functions
• Parton-distribution functions for the pion and kaon in the gauge-invariant nonlocal chiral-quark model
• Kaon quark distribution functions in the chiral constituent quark model
• Exclusive J/psi and Upsilon photoproduction and the low x gluon
• In-Medium Pion Valence Distributions in a Light-Front Model
• Meson cloud effects on the pion quark distribution function in the chiral constituent quark model
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• Parton Distribution in Pseudoscalar Mesons with a Light-Front Constituent Quark Model
• The quark-jet contribution to the fragmentation functions for the pion and kaon with the nonlocal interactions
• Consistency check of charged hadron multiplicities and fragmentation functions in SIDIS
• Instanton induced transverse single spin asymmetry for ${\pi }^0$ production in $pp$-scattering