On the Physics Potential of Polarized Nucleon-Nucleon Collisions at HERA
Abstract
The physics of polarized nucleon--nucleon collisions originating from an internal polarized target in the HERA proton beam is investigated. Based on 240 pb-1 integrated luminosity at 40 GeV c.m. energy, statistical sensitivities are given over a wide (xF, pT) range for a variety of inclusive and exclusive final states. By measuring single spin asymmetries unique information can be obtained on higher twist contributions and their pT-dependence. From double spin asymmetries in both photon and J/psi production it appears possible to measure the polarized gluon distribution in the range 0.1<xgluon<0.4 with a good statistical accuracy.
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