CASCADE3 A Monte Carlo event generator based on TMDs
S. Baranov, A. Bermudez Martinez, L.I. Estevez Banos, F. Guzman, F., Hautmann, H. Jung, A. Lelek, J. Lidrych, A. Lipatov, M. Malyshev, M., Mendizabal, S. Taheri Monfared, A.M. van Kampen, Q. Wang, H. Yang
TL;DR
CASCADE3 is a Monte Carlo event generator that incorporates Transverse Momentum Dependent parton densities, enabling more accurate simulation of hard processes with off-shell kinematics and TMD-based initial state parton showers.
Contribution
It introduces a TMD-based Monte Carlo generator that extends collinear factorization by adding transverse momenta and dedicated TMD showers, improving simulation accuracy.
Findings
Supports off-shell kinematics with $k_t$-factorization
Integrates TMD parton densities with parton showering
Enables processing of external LHE files for complex processes
Abstract
The CASCADE3 Monte Carlo event generator based on Transverse Momentum Dependent (TMD) parton densities is described. Hard processes which are generated in collinear factorization with LO multileg or NLO parton level generators are extended by adding transverse momenta to the initial partons according to TMD densities and applying dedicated TMD parton showers and hadronization. Processes with off-shell kinematics within -factorization, either internally implemented or from external packages via LHE files, can be processed for parton showering and hadronization. The initial state parton shower is tied to the TMD parton distribution, with all parameters fixed by the TMD distribution.
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