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Kinematic strangeness production in cluster hadronization

arXiv:1811.10336
MCNET-18-29
CoEPP-MN-18-9
HERWIG-2018-04
KA-TP-34-2018
Eur.Phys.J. C79 (2019) 61

by: Duncan, Cody B. (Monash U.) et al.

Abstract:
We present a modification to the non-perturbative strangeness production mechanisms in the Monte-Carlo event generator Herwig in order to make the processes more dynamic and collective. We compare the model to a series of observables for soft physics at both LEP and LHC.

Hadronic Final States in DIS at NNLO QCD with Parton Showers

arXiv:1809.04192
SLAC-PUB-17319
MCNET-18-24
FERMILAB-PUB-18-510-T
SLAC-PUB-17319 MCNET-18-24
Phys.Rev. D98 (2018) 114013

by: Höche, Stefan (SLAC) et al.

Abstract:
We present a parton-shower matched next-to-next-to-leading-order QCD calculation for hadronic final-state production in deep-inelastic scattering. The computation is based on the Unlops method and is implemented in the publicly available event generation framework Sherpa. Results are compared to measurements performed by the H1 Collaboration.

Microscopic collectivity: The ridge and strangeness enhancement from string–string interactions

arXiv:1807.05271
LU-TP 18-22
MCnet-18-16
Nucl.Phys. A982 (2019) 499-502

by: Bierlich, Christian (Lund U.)

Abstract:
We present the microscopic model for collective effects, built on string–string interactions (string shoving and rope hadronization), recently implemented in the PYTHIA8 and DIPSY event generators. Rope hadronization is shown to give a good description of strangeness enhancement across pp, pA and AA collision systems, while string shoving qualitatively describes the ridge observed in pp collisions.

PISTA: Posterior Ion STAcking

MCNET-18-13
LU-TP-18-20
arXiv:1807.01291

by: Bellm, Johannes (Lund U.) et al.

Abstract:
We present a program allowing for the construction of a heavy ion Monte Carlo event using a general purpose proton--proton event generator of the users' choice to deliver sub--collisions. In this heavy ion event, one or more jets can be added, again using a jet calculation of the users' choice, allowing for more realistic simulation studies of jets in a heavy ion background.

Colour Rearrangement for Dipole Showers

arXiv:1801.06113
HERWIG-2018-01
LU-TP-18-01
MCNET-18-01
Eur.Phys.J. C78 (2018) 601

by: Bellm, Johannes (Lund U., Dept. Theor. Phys.)

Abstract:
We present an algorithm to rearrange the colour chains of dipole showers in the shower process according to the colour amplitudes of a simple matrix element. We implement the procedure in the dipole shower of Herwig and show comparisons to data.