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Related papers: KNO scaling in quark and gluon jets at the LHC

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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.…

High Energy Physics - Phenomenology · Physics 2024-09-18 Robert Vertesi , Antal Gemes , Gergely Gabor Barnafoldi

We evaluate the Koba-Nielsen-Olesen (KNO) scaling functions for quark- and gluon-initiated jets by incorporating energy conservation into the Double Logarithmic Approximation (DLA). The resulting modified DLA (MDLA) expressions differ…

High Energy Physics - Phenomenology · Physics 2026-02-25 Xiang-Pan Duan , Lin Chen , Guo-Liang Ma , Carlos A. Salgado , Bin Wu

In this work we study the multiplicity distributions (MDs) of charged particles within jets in proton-proton collisions, which were measured by the ATLAS collaboration in 2011, 2016 and 2019. The first data set refers to jets with lower…

High Energy Physics - Phenomenology · Physics 2024-07-24 G. R. Germano , F. S. Navarra , G. Wilk , Z. Wlodarczyk

Using Mueller's dipole formalism for deep inelastic scattering in QCD, we formulate and solve the evolution for the generating function for the multiplicities of the produced particles, in hadronic processes at high energy. The solution for…

High Energy Physics - Phenomenology · Physics 2023-02-06 Yizhuang Liu , Maciej A. Nowak , Ismail Zahed

The comparisons of the charged-particle multiplicity and the average transverse momentum distributions on the scaled multiplicity, KNO scale, using the results of the ATLAS collaboration at the LHC are presented. These distributions were…

High Energy Physics - Experiment · Physics 2022-06-08 Yuri Kulchitsky , Pavel Tsiareshka

We suggest a universal QCD-motivated expression for the Polyakov-KNO multiplicity distributions of hadrons in jets and compare it with data from $e^+e^-$ annihilation experiments. The moments and overall shape of the distributions in full…

High Energy Physics - Phenomenology · Physics 2025-10-16 Yu. L. Dokshitzer , B. R. Webber

We analyze the charged particle multiplicity distributions in $p-p$ collisions and discuss the violation of the Koba--Nielsen--Olesen (KNO) scaling. We extract the deviations from the leading exponential behavior of the KNO scaled…

High Energy Physics - Phenomenology · Physics 2026-05-26 Mustapha Ouchen , Alex Prygarin

In this work, we investigate the scaling behavior of the entropy associated with the charged hadron multiplicity distribution P(N) in proton-proton collisions at the LHC. We show that the growth of this entropic indicator as a function of…

High Energy Physics - Phenomenology · Physics 2025-11-14 L. S. Moriggi , F. S. Navarra , M. V. T. Machado

The results of a Machine Learning-based method is presented here to investigate the scaling properties of the final state charged hadron and mean jet multiplicity distributions. Deep residual neural network architectures with different…

High Energy Physics - Phenomenology · Physics 2022-10-20 Gábor Bíró , Bence Tankó-Bartalis , Gergely Gábor Barnaföldi

Transverse momentum integrated multiplicities in the central region of pp collisions at LHC energies satisfy Koba-Nielsen-Olesen scaling. We attempt to relate this finding to multiplicity distributions of soft gluons. KNO scaling emerges if…

High Energy Physics - Phenomenology · Physics 2012-09-20 Adrian Dumitru , Elena Petreska

We study the gluon distribution produced via successive medium-induced branchings by an energetic jet propagating through a weakly-coupled quark-gluon plasma. We show that under suitable approximations the evolution of the jet can be…

High Energy Physics - Phenomenology · Physics 2017-02-01 Miguel A. Escobedo , Edmond Iancu

Multiparticle production in high energy proton -- proton collisions has been analysed in the frame of Strongly Correlated Quark Model (SCQM) of the hadron structure elaborated by the author. It is shown that inelasticity decreases at high…

High Energy Physics - Phenomenology · Physics 2009-11-10 G. Musulmanbekov

Analysis of the charged multiplicity in proton-proton inelastic interactions at the LHC energies in the setting of Dual Parton Model is presented. Data from the CMS experiment and the data simulated at different energies in various…

High Energy Physics - Phenomenology · Physics 2022-11-09 Pranay K. Damuka , R. Aggarwal , M. Kaur

We compute the proton-proton multiplicity distributions at LHC energies in the framework of a multiple scattering model assuming a Poisson distribution for each inelastic collision. Multiple scattering is essential to broaden the…

High Energy Physics - Phenomenology · Physics 2013-01-16 A. Capella , E. G. Ferreiro

Hadronic jets in deeply inelastic electron-proton collisions are produced by the scattering of a parton from the proton with the virtual gauge boson mediating the interaction. The HERA experiments have performed precision measurements of…

High Energy Physics - Phenomenology · Physics 2020-11-03 James Currie , Thomas Gehrmann , Alexander Huss , Jan Niehues

Multiplicity fluctuations at midrapidity in p+p collisions at high energies are described by a negative binomial distribution and exhibit approximate Koba-Nielsen-Olesen (KNO) scaling. We find that these KNO fluctuations are important also…

Nuclear Theory · Physics 2012-04-23 Adrian Dumitru , Yasushi Nara

We analyze Mueller's QCD dipole wave function evolution in the double logarithm approximation (DLA). Using complex analytical methods, we show that the distribution of dipole in the wave function (gluon multiplicity distribution)…

High Energy Physics - Phenomenology · Physics 2023-07-06 Yizhuang Liu , Maciej A. Nowak , Ismail Zahed

The charged particles multiplicity distribution in the KNO form is discussed in processes of $e^+e^-$ annihilation at energies $\sqrt{s}$ 14 -- 206.2 GeV. The experimental data are compared to data, obtained with Monte Carlo simulation in…

High Energy Physics - Phenomenology · Physics 2007-06-25 V. A. Abramovsky , N. V. Radchenko

Jets selected with high internal charged-particle multiplicity exhibit markedly different substructure patterns compared to inclusive jet samples. Such correlations motivate a systematic study of jet observables as a function of the…

High Energy Physics - Phenomenology · Physics 2025-10-07 Pi Duan , Weiyao Ke , Guang-You Qin , Lei Wang

The scaling properties of the final state charged hadron and mean jet multiplicity distributions, calculated by deep residual neural network architectures with different complexities are presented. The parton-level input of the neural…

High Energy Physics - Phenomenology · Physics 2023-03-10 Gábor Bíró , Gergely Gábor Barnaföldi
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