| dc.description |
The NLL corrections to the BFKL kernel are known to be very large, to the extent that even for small values of α<sub>s</sub>, they lead to physical cross sections which are not positive definite. It is shown in the context of a toy model, that such pathological behaviour is an artifact of the truncation at NLL order, and is associated in particular with double transverse logarithms. These are resummed in a manner consistent with the full NLL kernel, and are shown to change its properties quite considerably. |
