Probing relativistic spin effects in the nucleon by means of Drell-Yan processes

作者：Cano F^*; Faccioli P; Traini M

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2000, 62(9): 094018.

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 Q(2) scales. A specific observable related to double-spin asymmetries in lepton pair production in polarized hadron-hadron collisions is defined. The possibility of assessing the relevance of these relativistic spin effects in future experiments at BNL RHIC and DESY HERA-(N) over right arrow is discussed.

• 出版日期2000-11-1