Quark fragmentation functions in a diquark model for proton and $\Lambda$ hyperon production

Abstract

A simple quark-diquark model for nucleon and $\Lambda$ structure is used to calculate leading twist light-cone fragmentation functions for a quark to inclusively decay into P or $\Lambda$. The parameters of the model are determined by fitting to the known deep-inelastic structure functions of the nucleon. When evolved from the initial to the final $Q^2$ scale, the calculated fragmentation functions are in remarkable agreement (for $z>0.4$) with those extracted from partially inclusive $ep$ and $e^{+}{e}^{-}$ experiments at high energies. Predictions are made, using no additional parameters, for longitudinally and transversely polarized quarks to fragment into p or $\Lambda$.

15 pages, latex, figures may be obtained by writing to hafsa%png-qau%[email protected]

References in corpus (2)

• Novel Quark Fragmentation Functions and the Nucleon's Transversity Distribution
• Chiral-Odd and Spin-Dependent Quark Fragmentation Functions and their Applications

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• Chiral-Odd Fragmentation Functions in Single Pion Inclusive Electroproduction
• Quark Distributions of Octet Baryons from SU(3) Symmetry
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• Probing Charge-Symmetry-Violating Quark Distributions in Semi-Inclusive Leptoproduction of Hadrons
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• Unwinding the rare $\Omega$ sector: Fragmentation of fully charmed baryons from HL-LHC to FCC
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• Double Collins effect in $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }X$ process in a diquark spectator model
• Triply Heavy $\Omega$ Baryons with JETHAD: A High-Energy Viewpoint
• Predicting the $\sin {\varphi }_S$ Single-Spin-Asymmetry of $\Lambda$ Production off transversely polarized nucleon in SIDIS
• Evidence for SU(3) symmetry breaking from hyperon production
• Mass Suppression in Octet Baryon Production