Krzysztof Kutak

The CCFM Monte Carlo generator CASCADE Version 2.2.03

Cascade is a full hadron level Monte Carlo event generator for ep, γp and

Screening effects in the ultra-high energy neutrino interactions

pbar{p}

Gluon saturation in dijet production inp-Pb collisions at the Large Hadron Collider

and pp processes, which uses the CCFM evolution equation for the initial state cascade in a backward evolution approach supplemented with off-shell matrix elements for the hard scattering. A detailed program description is given, with emphasis on parameters the user wants to change and common block variables which completely specify the generated events.

Forward jets and energy flow in hadronic collisions

Abstract.We study possible saturation effects in the total crosssections describing the interaction of ultra-high energy neutrinos with nucleons. This analysis is performed within two approaches, i.e., within the Golec-Biernat-Wüsthoff saturation model and within the scheme unifying the DGLAP and BFKL dynamics incorporating non-linear screening effects which follow from the Balitzki-Kovchegov equation. The structure functions in both approaches are constrained by HERA data. It is found that screening effects affect the extrapolation of the neutrino-nucleon total cross-sections to ultra-high neutrino energies

Heavy ions at the Future Circular Collider

E_{nu}

Hard scale dependent gluon density, saturation, and forward-forward dijet production at the LHC

and reduce their magnitude by a factor equal to about 2 at

Nonlinear extension of the CCFM equation

E_{nu} sim 10^{12}

A momentum space analysis of the triple pomeron vertex in pQCD

GeV. This reduction becomes amplified by nuclear shadowing in the case of the neutrino-nucleus cross-sections and an approximate estimate of this effect is performed.

Predictions for

We study saturation effects in the production of dijets in p-p and p-Pb collisions using the framework of high energy factorization. We focus on central-forward jet configurations, which allow for probing gluon density at low longitudinal momentum fraction. We find significant suppression of the central-forward jet decorrelations in p-Pb compared to p-p, which we attribute to saturation of gluon density in nuclei.

p+

We observe that at the Large Hadron Collider, using forward + central detectors, it becomes possible for the first time to carry out calorimetric measurements of the transverse energy flow due to “mini-jets” accompanying production of two jets separated by a large rapidity interval. We present parton-shower calculations of energy flow observables in a high-energy factorized Monte Carlo framework, designed to take into account QCD logarithmic corrections both in the large rapidity interval and for hard transverse momentum. Considering events with a forward and a central jet, we examine the energy flow in the interjet region and in the region away from the jets. We discuss the role of these observables to analyze multiple parton collision effects.