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Time-Dependent Observables in Heavy Ion Collisions II: in Search of Pressure Isotropization in the Theory
Yuri V. Kovchegov, Bin Wu
To understand the dynamics of thermalization in heavy ion collisions in the perturbative framework it is essential to first find corrections to the free-streaming classical gluon f…
Time-Dependent Observables in Heavy Ion Collisions I: Setting up the Formalism
Bin Wu, Yuri V. Kovchegov
We adapt the Schwinger-Keldysh formalism to study heavy-ion collisions in perturbative QCD. Employing the formalism, we calculate the two-point gluon correlation function $G_{22}^{…
Small- Asymptotics of the Gluon Helicity Distribution
Yuri V. Kovchegov, Daniel Pitonyak, Matthew D. Sievert
We determine the small- asymptotics of the gluon helicity distribution in a proton at leading order in perturbative QCD at large . To achieve this, we begin by evaluating t…
Small- Asymptotics of the Quark Helicity Distribution: Analytic Results
Yuri V. Kovchegov, Daniel Pitonyak, Matthew D. Sievert
In this Letter, we analytically solve the evolution equations for the small- asymptotic behavior of the (flavor singlet) quark helicity distribution in the large- limit. Th…