Physical Review D
The cross section of heavy-ion collisions is represented as a double functional integral with the saddle point being the classical solution of the Yang-Mills equations with boundary conditions/sources in the form of two shock waves corresponding to the two colliding ions. I develop the expansion of this classical solution in powers of the commutator of the Wilson lines describing the colliding particles and calculate the first two terms of the expansion.
Original Publication Citation
Balitsky, I. (2004). Scattering of shock waves in QCD. Physical Review D, 70(11), 1-24, Article 114030. https://doi.org/10.1103/PhysRevD.70.114030
Balitsky, Ian, "Scattering of Shock Waves in QCD" (2004). Physics Faculty Publications. 604.