Unitarity corrections toK+→π+γl+l−

CCFM Evolution with Unitarity Corrections

We considerably extend our previous analysis of the implementation of an absorptive boundary condition, which mimics saturation effects, on the linear CCFM evolution. We present detailed results for the evolution of the unintegrated gluon density in the presence of saturation and extract the energy dependence of the emerging saturation momentum. We show that CCFM and BFKL evolution lead to almo...

3 Decays : Radiative Corrections and Ckm Unitarity

2 Unitarity Corrections and Structure Functions ⋆

We have studied the color dipole picture for the description of the deep inelastic process, mainly the structure functions which are driven directly by the gluon distribution. Estimates for those functions are obtained using the Glauber-Mueller dipole cross section in QCD, encoding the corrections due to the unitarity effects which are associated with the saturation phenomenon. Frame invariance...

Unitarity Corrections in High Energy QCD ∗

The high energy limit of QCD is investigated in the generalized leading logarithmic approximation. We study unitarity corrections to the BFKL Pomeron containing t-channel states with up to six gluons. Special attention is given to the field theory structure of the corresponding multi–gluon amplitudes. We discuss the transition from two to six gluons in the t-channel.

Problem of Unitarity and Quantum Corrections in Semiclassical Quantum Gravity

Using the Born-Oppenheimer idea we show that the Wheeler-DeWitt equation in an oscillating regime can also allow a different type of semiclassical quantum gravity that preserves completely the unitary quantum evolution of a matter field, which reduces the same asymptotic limit as the others. We develop a perturbation method to find the quantum corrections of a matter field to the gravity. The s...