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Jet fragmentation functions measured in e^+e^- and p+\bar{p} experiments are well-described on an inclusive hadron level by QCD-based calculations. Fragmentation is expected to be modified by the presence of a strongly interacting medium,…

Nuclear Experiment · Physics 2009-07-22 Mark Heinz

The distributions of transverse momentum and longitudinal momentum fraction of charged particles in jets are measured in Pb+Pb and pp collisions with the ATLAS detector at the LHC. The distributions are measured as a function of jet…

High Energy Physics - Experiment · Physics 2017-09-20 ATLAS Collaboration

A detailed study of various two-particle correlation functions involving photons and neutral pions is presented in proton-proton and lead-lead collisions at the LHC energy. The aim is to use these correlation functions to quantify the…

High Energy Physics - Phenomenology · Physics 2010-02-03 Francois Arleo , Patrick Aurenche , Zouina Belghobsi , Jean-Philippe Guillet

QCD color coherence phenomena, like angular ordering, can be studied by looking at jet fragmentation. As the jet is fragmenting, it is expected to go through two different phases. First, there is QCD branching that is calculable in…

High Energy Physics - Experiment · Physics 2019-08-13 Jussi Viinikainen

We present new sets of pion and kaon fragmentation functions obtained in NLO combined analyses of single-inclusive hadron production in electron-positron annihilation, proton-proton collisions, and deep-inelastic lepton-proton scattering…

High Energy Physics - Phenomenology · Physics 2008-11-26 D. de Florian , R. Sassot , M. Stratmann

We develop the theoretical framework needed to study the distribution of hadrons with general polarization inside jets, with and without transverse momentum measured with respect to the standard jet axis. The key development in this paper,…

High Energy Physics - Phenomenology · Physics 2020-09-14 Zhong-Bo Kang , Kyle Lee , Fanyi Zhao

The transverse structure of jets was studied via jet fragmentation transverse momentum ($j_{\rm{T}}$) distributions, obtained using two-particle correlations in proton-proton and proton-lead collisions, measured with the ALICE experiment at…

Nuclear Experiment · Physics 2020-06-17 ALICE Collaboration

The nature of a jet's fragmentation in heavy-ion collisions has the potential to cast light on the mechanism of jet quenching. However the presence of the huge underlying event complicates the reconstruction of the jet fragmentation…

High Energy Physics - Phenomenology · Physics 2015-06-11 Matteo Cacciari , Paloma Quiroga-Arias , Gavin P. Salam , Gregory Soyez

We analyse LEP and PETRA data on single inclusive charged hadron cross-sections to establish new sets of Next-to-Leading order Fragmentation Functions. Data on hadro-production of large-$p_{\bot}$ hadrons are also used to constrain the…

High Energy Physics - Phenomenology · Physics 2010-03-25 L. Bourhis , M. Fontannaz , J. Ph. Guillet , M. Werlen

Correlations between charged particles provide important insight into the hadronization process. The analysis of the momentum difference between charged hadrons in $pp$, $p$-lead, and lead-lead collisions at LHC is performed by the ATLAS…

High Energy Physics - Experiment · Physics 2023-01-18 S. Todorova-Nova

We study the production of a large-pT photon in association with a jet in proton-proton collisions. We examine the sensitivity of the jet rapidity distribution to the gluon distribution function in the proton. We then assess the sensitivity…

High Energy Physics - Phenomenology · Physics 2009-07-09 Z. Belghobsi , M. Fontannaz , J. -Ph. Guillet , G. Heinrich , E. Pilon , M. Werlen

We discuss the inclusive high-pT charged-particle production in proton-proton collisions at the LHC. The experimental data are compared to the NLO perturbative QCD calculations employing various sets of parton-to-hadron fragmentation…

High Energy Physics - Phenomenology · Physics 2014-08-21 David d'Enterria , Kari J. Eskola , Ilkka Helenius , Hannu Paukkunen

The identification of a hadron in the final state of hadron-collider events that feature a leptonically decaying vector boson can provide essential information on the parton content of the colliding protons. Moreover, the study of hadrons…

High Energy Physics - Phenomenology · Physics 2024-10-07 Simone Caletti , Aude Gehrmann-De Ridder , Alexander Huss , Adrian Rodriguez Garcia , Giovanni Stagnitto

This article presents new measurements of the fragmentation properties of jets in both proton-proton (pp) and heavy-ion collisions with the ALICE experiment at the LHC. We report distributions of the fraction $z_r$ of transverse momentum…

Nuclear Experiment · Physics 2023-06-22 ALICE Collaboration

We update our extraction of parton-to-charged hadron fragmentation functions at next-to-leading order accuracy in QCD, focusing on the wealth of data collected at the Large Hadron Collider over the past decade. We obtain an accurate…

High Energy Physics - Phenomenology · Physics 2023-11-30 Ignacio Borsa , Daniel de Florian , Rodolfo Sassot , Marco Stratmann

I review the status of next-to-leading-order calculations for hadronic final states in deeply-inelastic lepton--nucleon scattering. In more detail, I focus on calculations of (2+1)-jet-type cross sections, describe recent progress in…

High Energy Physics - Phenomenology · Physics 2008-11-26 Dirk Graudenz

We compare results of $k_t$-factorization approach and next-to-leading order collinear-factorization approach for photon-jet correlations in $pp$ and $p \bar p$ collisions at RHIC, Tevatron and LHC energies. We discuss correlations in…

High Energy Physics - Phenomenology · Physics 2009-04-16 T. Pietrycki , A. Szczurek

Recent measurements of charm-baryon production in hadronic collisions have questioned the universality of charm-quark fragmentation across different collision systems. In this work the fragmentation of charm quarks into charm baryons is…

Nuclear Experiment · Physics 2024-04-15 ALICE Collaboration

Jet tomography, the study of differential energy loss of hard scattered partons to infer the density profile of the medium, is greatly improved by precise knowledge of the initial energy of the hard probe. As photons are not strongly…

Nuclear Experiment · Physics 2008-11-26 Matthew Nguyen

We present next-to-leading order (NLO) perturbative-QCD calculations of the cross sections for $\ell N\to h X$ and $\ell N\to \mathrm{jet}\, X$. The main feature of these processes is that the scattered lepton is not observed, so that the…

High Energy Physics - Phenomenology · Physics 2016-06-03 Patriz Hinderer , Marc Schlegel , Werner Vogelsang