摘要The early parton momentum distribution is extracted by using the STAR collaboration data of ridge particles associated with a near-side jet in central AuAu collisions at √sNN=200GeV. The ridge particles are identified as medium partons kicked by the jet near the surface and they carry direct information on the parton momentum distribution at the moment of jet-parton collisions. The extracted parton momentum distribution has a thermal-like transverse momentum distribution but a rapidity plateau structure with a relatively flat rapidity distribution at mid-rapidities with sharp kinematic boundaries at large rapidities that depend on the transverse momentum
Abstract：The early parton momentum distribution is extracted by using the STAR collaboration data of ridge particles associated with a near-side jet in central AuAu collisions at √sNN=200GeV. The ridge particles are identified as medium partons kicked by the jet near the surface and they carry direct information on the parton momentum distribution at the moment of jet-parton collisions. The extracted parton momentum distribution has a thermal-like transverse momentum distribution but a rapidity plateau structure with a relatively flat rapidity distribution at mid-rapidities with sharp kinematic boundaries at large rapidities that depend on the transverse momentum
WONG Cheuk-Yin. Parton Momentum Distribution at the Moment of Jet-Parton Collisions[J]. 中国物理快报, 2008, 25(11): 3936-3939.
WONG Cheuk-Yin. Parton Momentum Distribution at the Moment of Jet-Parton Collisions. Chin. Phys. Lett., 2008, 25(11): 3936-3939.
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2008, Vol. 25 
