KNO-like scaling within a jet in proton--proton collisions at LHC energies

Understand

We study the multiplicity distributions of events with hard jets in proton-proton collisions at LHC energies using PYTHIA 8 Monte-Carlo simulations.

• We demonstrate that the charged-hadron multiplicity distributions scale with jet momentum.
• This suggests that the Koba--Nielsen--Olesen (KNO) scaling holds within a jet.
• The in-jet scaling is fulfilled without multiple-parton interactions (MPI), but breaks down in case MPI is present without color reconnection.