Probing Relativistic Spin Effects in the Nucleon by Means of Drell–Yan Processes
نویسندگان
چکیده
Significant differences between transverse and longitudinal polarized parton distributions are found at low energies within a light-front covariant quark model of the nucleon. These differences are due to relativistic spin effects introduced by the Melosh rotations and survive evolution to higher Q2 scales. We show that the importance of these relativistic effects can be assessed by measuring double-spin asymmetries in lepton pair production in polarizared hadron-hadron collisions. PACS: 12.39.-x, 12.39.Ki, 13.88.+e
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