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Anomalous Drell-Yan asymmetry from hadronic or QCD vacuum effects

Daniel Boer
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Abstract

The anomalously large cos(2 phi) asymmetry measured in the Drell-Yan process is discussed. Possible origins of this large deviation from the Lam-Tung relation are considered with emphasis on the comparison of two particular proposals: one that suggests it arises from a QCD vacuum effect and one that suggests it is a hadronic effect. Experimental signatures distinguishing these effects are discussed.

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Daniel Boer. 2005-11-03. Anomalous Drell-Yan asymmetry from hadronic or QCD vacuum effects. https://doi.org/10.1142/9789812773272_0029

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