Stochastic Disoriented Chiral Condensates

Applying a Langevin description of the linear sigma model we investigate four different scenarios for the evolution of a disoriented chiral condensate: annealing or quench with initial conditions governed by effective ‘light’ or physical mass pions. We present pion number distributions estimated from the zero mode (i.e. k = 0-field) component. The best DCC signal is expected for the quench scenario with initial conditions centered around 〈σ〉 ≈ 0 as would be the case of effective light ‘pions’ close to the phase transition. Our investigations support the idea of looking for DCC formation in individual events.