(Color online) The width of the ESPPs for μ > μ c , u 0 = 0.01 , σ = 0.25, μ = 0.7, κ 1 = 20 , κ 2 = 3 , α = 0.5 (dashed curve), α = 0.6 (solid curve), and α = 0.7 (dotted curve).