MC-Simulation of the Transverse Double Spin Asymmetry for RHIC

Details MC-Simulation of the Transverse Double Spin Asymmetry for RHIC MC-Simulation of the Transverse Double Spin Asymmetry for RHIC

1996-07-30

arxiv.org/abs/hep-ph/9607470v1

Z.Phys. A358 (1997) 429-433

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 5 figures

Scientific paper

10.1007/s002180050351

Using {\sc Sphinx tt}, a new MC simulation program for transverse polarized nucleon--nucleon scattering based on {\sc Pythia~5.6}, we calculate the transverse double spin asymmetry $A^{TT}$ in the Drell-Yan process. If one assumes (quite arbitrarily) that the transversity parton distribution $\delta q(x,Q^2)$ equals the helicity distribution $\Delta q(x,Q^2)$ at some low $Q_0^2$ scale, the resulting asymmetry is of order 1\%. In this case is $A^{TT}$ would hardly be be measurable with PHENIX at RHIC.

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