content_image/299694.jpg content_image/299695.jpg content_image/299696.jpg content_image/299697.jpg
power law, 

<img src='content_image/299694.jpg'>

where A is some normalization constant, then we may find a simple equation for the partonic nuclear modification factor, 

<img src='content_image/299695.jpg'>

<img src='content_image/299696.jpg'>

In the case of a slowly varying power law n ( p$_{T}$ ) is approximately independent of p$_{T}$ ; if we further assume a slow variation of P with respect to p$_{T}$ we have 

<img src='content_image/299697.jpg'>

We note that if the production spectra are dN q $_{prod}$/d$^{2}$p$_{T}$ or dN q $_{prod}$/dp 2 T then the exponent in Eq. (B.11) goes from n ( p$_{T}$ ) − 1 to n ( p$_{T}$ ) − 2. 

