Spin Alignment of Vector Mesons in Non-central A+A Collisions

Details Spin Alignment of Vector Mesons in Non-central A+A Collisions Spin Alignment of Vector Mesons in Non-central A+A Collisions

2004-11-25

arxiv.org/abs/nucl-th/0411101v2

Phys.Lett. B629 (2005) 20-26

Physics

Nuclear Physics

Nuclear Theory

6 pages in latex with two postscript figures

Scientific paper

10.1016/j.physletb.2005.09.060

We discuss the consequence of global polarization of the produced quarks in non-central heavy-ion collisions on the spin alignment of vector mesons. We show that the alignment is quite different for different hadronization scenarios. These results can be tested directly by measuring the vector mesons' alignment through angular distributions of the decay products with respect to the reaction plane. Such angular distributions will give rise to azimuthal anisotropy $v_2$ of the decay products in the collision frame. Constraints provided by the data on the azimuthal anisotropy of hadron spectra at RHIC points to a quark recombination scenario of hadronization.

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