Vadim Oreshkin

A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden particles are predicted by a large number of models beyond the Standard Model. The high intensity of the SPS 400~GeV beam allows probing a wide variety of models containing light long-lived exotic particles with masses below ${\cal O}$(10)~GeV/c$^2$, including very weakly interacting low-energy SUSY states. The experimental programme of the proposed facility is capable of being extended in the future, e.g. to include direct searches for Dark Matter and Lepton Flavour Violation.

Abstract Forward dijet production with wide rapidity separation in pp -collisions at LHC and Tevatron energies is discussed. Predictions on forward dijet ratios and azimuthal decorrelations from various GLAPD- and BFKL- Monte-Carlo event generators are presented.

Monte Carlo event simulation with BFKL evolution is discussed. We report current status of a Monte Carlo event generator ULYSSES with BFKL evolution implemented. The ULYSSES, based on Pythia Monte Carlo generator, would help to reveal BFKL effects at LHC energies. In particular, such an observable as dijet K-factor can serve as a source of BFKL dynamics at the LHC, and it would also help to search for new physics.

Forward dijets and possible signals of hypothetical extra-dimension graviton at the LHC are discussed. Studies for large mass dijet production at s=7 and 14 TeV in forward rapidity region are presented with a model of extra-dimension graviton t-channel exchange in trans-Planckian scattering regime. The model is implemented into Monte Carlo event generator. QCD background for dijets with large effective masses was studied with different Monte Carlo event generators, including BFKL-motivated generators.

Abstract This talk presents several Standard Model and QCD results from the ATLAS and CMS collaborations based on proton-proton collision data collected at 7 TeV, 2.76 TeV and 8 TeV centre-of-mass energy. Namely, differential cross sections of jet and dijet production, isolated photon production, and vector boson production in association with jets are discussed.

A few CMS analyses based on data collected during 2009–2010 data taking period are reviewed, including forward jet production cross-section measurements, energy flow measurement for Minimum Bias events as well as for events with presence of hard scale, and observation of single diffraction.

The polarization of the secondary protons (P1,2) in the (p,2p) reaction with the S - shell protons of nuclei 4He, 6Li, 12C, 28Si, 40Ca was measured at 1 GeV unpolarized proton beam. The spin correlation parameters Cij for the 4He and 12C targets also were for the first time obtained. The polarization measurements were performed by means of a two - arm magnetic spectrometer each arm of which was equipped with multiwire - proportional chambers polarimeter.