Global Quark Polarization in QGP in Non-central AA Collisions

GAO Jian-Hua

Chinese Physics C> 2007, Vol. 31> Issue(12) : 1181-1184

Global Quark Polarization in QGP in Non-central AA Collisions

GAO Jian-Hua ^,

School of Physics and Microelectronics, Shandong University, Ji'nan 250100, China

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Abstract：
There exists a large local relative orbital angular momentum between produced partons along the direction opposite to the reaction plane in the early stage of non-central heavy-ion collisions. This initial local orbital angular momentum can lead to quark polarization along the same direction due to spin-orbital coupling in QCD. We present the quark polarization by using hard thermal loop gluon propagator for quark-quark scattering in quark-gluon plasma and compare it with the result obtained from the static potential model.

References

[1]

. LIANG Z T, WANG X N. Phys. Rev. Lett., 2005,94: 102301. arXiv:nucl-th/0410079; Erratum, 2006, 96:039901(E)2. LIANG Z T, WANG X N. Phys. Lett., 2005, B629: 20.arXiv:nucl-th/04111013. Selyuzhenkov I(STAR Collaboration). AIP Conf. Proc.,2006, 870: 712. arXiv:nucl-ex/0608034; J. Phys., 2006,G32: S557. arXiv:nucl-ex/06050354. WANG X N. Phys. Lett., 2000, B485: 1575. Weldon H A. Phys. Rev., 1982, D26: 13946. Heiselberg H, WANG X N. Nucl. Phys., 1996, B462: 3897. GAO J H, CHEN S W, LIANG Z T et al. Globa Quark Polarization in Quark-Gluon-Plasma Produced in Non-Central A+A Collisions. in preparation8. LIANG Z T. Plenary Talk at the 19th International Conferece on Ultra-Relativistic Nucleus-Nucleus Collisions.November 14-20, 2006. Shanghai, China9. Bir T S, Müller B. Nucl. Phys., 1993, A561: 477

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GAO Jian-Hua. Global Quark Polarization in QGP in Non-central AA Collisions[J]. Chinese Physics C, 2007, 31(12): 1181-1184.

GAO Jian-Hua. Global Quark Polarization in QGP in Non-central AA Collisions[J]. Chinese Physics C, 2007, 31(12): 1181-1184. shu

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Received: 2007-07-17
Revised: 1900-01-01

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Global Quark Polarization in QGP in Non-central AA Collisions

GAO Jian-Hua ^,

Corresponding author: GAO Jian-Hua,

School of Physics and Microelectronics, Shandong University, Ji'nan 250100, China

Received Date: 2007-07-17
Accepted Date: 1900-01-01
Available Online: 2007-12-05

Abstract: There exists a large local relative orbital angular momentum between produced partons along the direction opposite to the reaction plane in the early stage of non-central heavy-ion collisions. This initial local orbital angular momentum can lead to quark polarization along the same direction due to spin-orbital coupling in QCD. We present the quark polarization by using hard thermal loop gluon propagator for quark-quark scattering in quark-gluon plasma and compare it with the result obtained from the static potential model.