Volume 316 - XXVI International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2018) - WG6: Spin and 3D structure
Production of transversely polarized $\Lambda$ hyperon from unpolarized quark fragmentation in the diquark model
Y. Yang,* W. Mao, Z. Lu, I. Schmidt
*corresponding author
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Pre-published on: 2018 September 20
Published on: 2018 November 23
Abstract
We study the spin-dependent (naive) T-odd fragmentation function $D^\perp_{1T}$ in a spectator model to obtain the knowledge of the process for the transverse polarization of the $\Lambda^0$ hyperon produced fragmented from an unpolarized quark.
We consider both scalar diquark and vector diquark to obtain the flavor content of $\Lambda$ fragmentation functions.
We determine the values of the model parameters by fitting the unpolarized fragmentation function $D^\Lambda_1$ to the DSV parametrization for $D^\Lambda_1$.
With the model results of these fragmentation functions, we also estimate the transverse polarizations $P^\Lambda_T$ in both semi-inclusive deep inelastic scattering and single inclusive $e^+e^-$ annihilation.
DOI: https://doi.org/10.22323/1.316.0140
Open Access
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