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arXiv · hep-ph/9609498

Determination of flavor asymmetry for $Σ^{\pm}$ by the Drell-Yan process

Mary Alberg·Ernest M. Henley·Xiangdong Ji·A. W. Thomas
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Abstract

Flavor asymmetries for the valence and sea quarks of the $Σ^{\pm}$ can be obtained from Drell-Yan experiments using charged hyperon beams on proton and deuteron targets. A large, measurable difference in sea quark asymmetries is predicted between SU(3) and pseudoscalar meson models. The latter predict that in $Σ^{+}$, $\bar{u}/\bar{d} \leq 1/2$, whereas the former predict $\bar{u}/\bar{d} \approx 4/3$. Estimates of valence quark asymmetries based on quark models also show large deviations from SU(3) predictions, which should be measurable.

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Mary Alberg, Ernest M. Henley, Xiangdong Ji, A. W. Thomas. 1996-09-26. Determination of flavor asymmetry for $Σ^{\pm}$ by the Drell-Yan process. https://doi.org/10.1016/s0370-2693(96)01272-5

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