Whirlpools in the Sea: Polarization of Antiquarks in a Spinning Proton
- 31 October 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 39 (18), 1116-1120
- https://doi.org/10.1103/physrevlett.39.1116
Abstract
We argue that the sea of virtual quark-antiquark pairs in a proton is polarized. Quantum chromodynamics allows a valence quark to emit a gluon which then produces pairs. If the parent quark in this process exhibits a behavior as then the antiquark with helicity the same as the original quark will have a leading distribution. Implications for the counting rules and for polarized Drell-Yan annihilation are discussed.
Keywords
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