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Probing Quark Fragmentation Functions for Spin-1/2 Baryon Production in Unpolarized $e^+e^-$ Annihilation

Kun Chen·Gary R. Goldstein·R. L. Jaffe·Xiangdong Ji
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Abstract

We study the measurement of the quark fragmentation functions for spin-1/2 baryon production ($Λ$ and $\bar Λ$, in particular) in unpolarized $e^+e^-$ annihilation. The spin-dependent fragmentation functions $\hat g_1(z)$ and $\hat h_1(z)$ can be probed in the process as a result of quark-antiquark spin correlation and the weak decay of the baryons. The relevant cross section is expressed as a product of the two-jet cross-section, the fragmentation functions, and the differential width of the hyperon decay.

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Kun Chen, Gary R. Goldstein, R. L. Jaffe, Xiangdong Ji. 1994-10-20. Probing Quark Fragmentation Functions for Spin-1/2 Baryon Production in Unpolarized $e^+e^-$ Annihilation. https://doi.org/10.1016/0550-3213(95)00193-v

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