Novel Azimuthal Asymmetries in Drell Yan and Semi-inclusive Deep Inelastic Scattering
classification
✦ hep-ph
keywords
contributionsazimuthalmodelscatteringapproximateasymmetriesasymmetryconsider
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We consider the leading and sub-leading twist $T$-odd and even contributions to the $\cos 2\phi$ azimuthal asymmetry in unpolarized dilepton production in Drell-Yan Scattering. We estimate the contributions' effects at $500 {\rm GeV}$, $ 50 {\rm GeV}$, and $25 {\rm GeV}$ energies in the framework of the parton model using a quark diquark-spectator model of the nucleon to approximate the soft contributions.
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