KNO-like scaling within a jet in proton--proton collisions at LHC energies
arXiv:2012.01132 · doi:10.1103/PhysRevD.103.L051503
Abstract
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. Our findings imply that KNO scaling is violated by parton shower or multiple-parton interactions in higher-energy collisions.
6 pages, 4 figures
References in corpus (20)
- The anti-k_t jet clustering algorithm
- An Introduction to PYTHIA 8.2
- Successive Combination Jet Algorithm For Hadron Collisions
- Better Jet Clustering Algorithms
- Tuning PYTHIA 8.1: the Monash 2013 Tune
- Event generator tunes obtained from underlying event and multiparton scattering measurements
- Interleaved Parton Showers and Tuning Prospects
- Charged-Particle Multiplicity in Proton-Proton Collisions
- Consequences of temperature fluctuations in observables measured in high energy collisions
- KNO scaling of fluctuations in pp and pA, and eccentricities in heavy-ion collisions
- Measurement of charged pion, kaon, and proton production in proton-proton collisions at sqrt(s) = 13 TeV
- Multiplicity Distribution and Mechanisms of the High-Energy Hadron Collisions
- New Entropy Formula with Fluctuating Reservoir
- Jet and underlying event properties as a function of particle multiplicity in proton-proton collisions at sqrt(s) = 7 TeV
- Probing color reconnection with underlying event observables at the LHC energies
- KNO scaling 30 years later
- Modification of jet structure in high-multiplicity pp collisions due to multiple-parton interactions and observing a multiplicity-independent characteristic jet size
- Renormalization group approach to multiparticle density fluctuations
- Non-extensive Motivated Parton Fragmentation Functions
- Jet Structure Studies in Small Systems