12⁢π⁢ⅈ⁢∫-∞(0+)ⅇt⁢z⁢t-a⁢U⁡(a,b,y/t)⁢ⅆ⁡t=2⁢z12⁢(2⁢a-b-1)⁢y12⁢(1-b)Γ⁡(a)⁢Γ⁡(a-b+1)⁢Kb-1⁡(2⁢z⁢y),