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Analysis of the double-spin asymmetry A<inf>LT</inf> in inelastic nucleon-nucleon collisions
Metz, A Pitonyak, D Schäfer, A Zhou, J
Metz, A
Pitonyak, D
Schäfer, A
Zhou, J
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Journal Article
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2012-12-12
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10.1103/PhysRevD.86.114020
Abstract
Within the collinear twist-3 framework, we analyze the double-spin asymmetry in collisions between longitudinally polarized nucleons and transversely polarized nucleons with focus on hadron and jet production. As was the case in direct photon production, the double-spin dependent cross section for hadron and jet production has the advantage of involving a complete set of collinear twist-3 functions for a transversely polarized nucleon. In addition, we outline further benefits of this observable for a potential future measurement at the Relativistic Heavy Ion Collider, which includes insight on the gluon helicity distribution as well as information on the Efremov-Teryaev-Qiu-Sterman function TF(x,x) that plays a crucial role in single-spin asymmetries. © 2012 American Physical Society.
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Physical Review D - Particles, Fields, Gravitation and Cosmology
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