The production cross section of heavy quarks in real and virtual photon-photon collisions has been studied. The unintegrated gluon density in the photon was obtained using the CCFM evolution equation for the first time. The gluon density was implemented in the Monte Carlo generator CASCADE, and cross sections for heavy quark production in e + e − collisions were calculated and compared to LEP d...

Absolute grand total cross sections (TCSs) for electron–disilane (Si2H6) scattering have been measured over the energy range from 1 to 370 eV in a linear transmission experiment. The low-energy TCS is dominated by a broad resonant-like enhancement. In the region of the maximum the present grand TCS values appeared to be distinctly lower than previously reported integral elastic cross section da...

The measurement of diboson production cross sections for a center-of-mass energy of 7 TeV is presented. Luminosities used are 1.1 fb −1 from 2011 data for ZZ, WZ and WW processes and 36 pb −1 from 2010 data for Wγ and Zγ final states. Cross sections are measured to σ (pp → ZZ + X) = 3.8 The production cross sections of processes including photons in the final state, Wγ and Zγ processes are give...