Recent results on alpha_s study in ATLAS and CMS, especially on Energy-Energy Correlation in ATLAS, and mostly jets in CMS.
Quark form factors are important building blocks for several processes studied at the LHC, for example Higgs boson production and decay as well as top-pair production. I will present our calculation of massive quark form factors at three loops in QCD including both singlet and non-singlet contributions. After reducing the Feynman integrals in the amplitudes to master integrals, these were...
The proton and nuclear gluon distribution functions show a strong
increase at low values of Bjorken x. This increase, if untamed, would
eventually lead to violation of unitarity. The growth of the gluon
distribution must therefore at some point saturate. I will review the
experimental status on saturation at the LHC.
The cross-sections of diffractive double hadron photo- or electroproduction with large pT, on a nucleon or a nucleus, are calculated to NLO accuracy.
A hybrid formalism mixing collinear factorization and high energy kt factorization, more precisely the shockwave formalism, is used to derive the results.
The cancellation of divergences is explicitly shown, and the finite parts of the NLO...
