An upgraded issue of the parton and hadron cascade model, PACIAE 2.2

TL;DR

PACIAE 2.2 is an upgraded parton and hadron cascade model that now includes capabilities for lepton-nucleon and lepton-nucleus deep inelastic scattering, validated by comparison with experimental data.

Contribution

The paper introduces PACIAE 2.2, extending the previous model to simulate lepton-induced deep inelastic scattering and analyzing parameter effects on hadron multiplicity.

Findings

Model successfully reproduces HERMES data for charged hadron multiplicity.

Parameter nd eta significantly influence multiplicity outcomes.

Extended model capabilities enable broader applications in particle physics simulations.

Abstract

The parton and hadron cascade model PACIAE 2.1 (cf. Comput. Phys. Commun.184 (2013) 1476) has been upgraded to the new issue of PACIAE 2.2. By this new issue the lepton-nucleon and lepton-nucleus (inclusive) deep inelastic scatterings can also be investigated. As an example, the PACIAE 2.2 model is enabled to calculate the specific charged hadron multiplicity in the $e^-$+p and $e^-$+D semi-inclusive deep-inelastic scattering at 27.6 GeV electron beam energy. The calculated results are well comparing with the corresponding HERMES data. Additionally, the effect of model parameters \alpha and \beta in the Lund string fragmentation function on the multiplicity is studied.