IR-Improved DGLAP-CS Theory

Ir-improved Dglap Theory †

We show that it is possible to improve the infrared aspects of the standard treatment of the DGLAP evolution theory to take into account a large class of higher order corrections that significantly improve the precision of the theory for any given level of fixed-order calculation of its respective kernels. We illustrate the size of the effects we resum using the moments of the parton distributi...

Interplay of IR - Improved DGLAP - CS Theory and NLO Parton Shower MC Precision

Improved Dglap Theory at the Lhc

We discuss the elements of QED⊗QCD exponentiation and its interplay with shower/ME matching and IR-improved DGLAP theory in precision LHC physics scenarios. Applications to single heavy gauge boson production at hadron colliders are illustrated. Given the approaching turn-on of the LHC, the issue of precision predictions for the effects of multiple gluon and multiple pho-ton radiative processes...

New Applications of Resummation in Non-Abelian Gauge Theories: QED⊗QCD Exponentiation for LHC Physics, IR-Improved DGLAP Theory and Resummed Quantum Gravity

We present the elements of three applications of resummation methods in non-Abelian gauge theories: (1), QED⊗QCD exponentiation and shower/ME matching for LHC physics; (2), IR improvement of DGLAP theory; (3), resummed quantum gravity and the final state of Hawking radiation. In all cases, the extension of the YFS approach, originally introduced for Abelian gauge theory, to non-Abelian gauge th...

Heavy flavour production in DGLAP improved saturation model

The charm and beauty quark production in deep inelastic scattering at low values of the Bjorken variable x is considered in the DGLAP improved saturation model. After fitting parameters of the model to the structure function F2, the heavy quark contributions F cc̄ 2 and F bb̄ 2 are predicted. A good description of the data is found. Predictions for the longitudinal structure function FL and the d...