Global analysis of fragmentation functions to light neutral hadrons

Abstract

Fragmentation functions (FFs) are crucial non-perturbative components in quantum chromodynamics (QCD), playing a vital role in predictions and understanding of the hadronization process. In this paper, we present the FFs for $K_S^0$, $\eta$, ${\pi }^0$ mesons, and $\Lambda$ baryons in the context of global QCD analysis. The data included in the fit are from single inclusive $e^{+}{e}^{-}$ annihilation (SIA), semi-inclusive deep-inelastic scattering (SIDIS) and proton-proton collisions, with kinematic cuts carefully applied to ensure validity of collinear factorization and perturbative QCD expansion. For the first time, data from SIDIS and hadron-in-jet production in SIA have been incorporated into the extraction of FFs for light-flavor neutral hadrons. Our analysis reveals that these data play a critical role in constraining the gluon distribution, and in distinguishing between different quark flavors. Pulls from different datasets are also studied by performing alternative fits with systematically subtracting groups of data from the nominal fit. For the quality of the fit, good ${\chi }^2$ values are achieved for most of the datasets, and FFs are generally well constrained within the momentum fraction region $\pqty{0.1, 0.5}$. The extracted $K_S^0$ fragmentation functions, together with the $K_S^0$ FFs constructed from $K^{\pm }$ FFs via isospin symmetry, are used to test isospin symmetry in kaon fragmentation. Although a definitive conclusion cannot be reached yet, these studies have identified several potential measurements that can be performed at existing facilities, which may ultimately help us to arrive at a conclusive answer. With the comprehensive species of FFs extracted within the NPC framework, we are able to perform a test on the momentum sum rule with the light-flavor charged and neutral hadrons.

62 pages, 53 figures

References in corpus (90)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• LHAPDF6: parton density access in the LHC precision era
• New parton distribution functions from a global analysis of quantum chromodynamics
• Fragmentation Functions for Pions, Kaons, and Protons at Next-to-Leading Order
• Fragmentation Functions from Flavour-inclusive and Flavour-tagged e^+e^- Annihilations
• A Higher Order Perturbative Parton Evolution Toolkit (HOPPET)
• AKK Update: Improvements from New Theoretical Input and Experimental Data
• Uncertainties of Predictions from Parton Distribution Functions I: the Lagrange Multiplier Method
• Global Analysis of Fragmentation Functions for Protons and Charged Hadrons
• Parton-to-Pion Fragmentation Reloaded
• Determination of fragmentation functions and their uncertainties
• Parton Fragmentation Functions
• Inclusive cross section and double helicity asymmetry for π^0 production in p+p collisions at sqrt(s)=200 GeV: Implications for the polarized gluon distribution in the proton
• Strange Particle Production in pp Collisions at sqrt(s) = 0.9 and 7 TeV
• Next-to-leading order QCD corrections to high-p_T pion production in longitudinally polarized pp collisions
• QCD Analysis of Unpolarized and Polarized Lambda - Baryon Production in Leading and Next-to-Leading Order
• A determination of the fragmentation functions of pions, kaons, and protons with faithful uncertainties
• Neutral pion and $\eta$ meson production in proton-proton collisions at $\sqrt{s}=0.9$ TeV and $\sqrt{s}=7$ TeV
• Next-to-Leading Order Fragmentation Functions for Pions and Kaons
• Next-to-Next-to-Leading Order Evolution of Non-Singlet Fragmentation Functions
• Soft-Gluon Resummation for the Fragmentation of Light and Heavy Quarks at Large x
• Pion and Kaon Production in $e^{+}{e}^{-}$ and $ep$ Collisions at Next-to-Leading Order
• Higher order QCD corrections to the transverse and longitudinal fragmentation functions in electron-positron annihilation
• Simultaneous Monte Carlo analysis of parton densities and fragmentation functions
• Production of pi+, K+, K0, K*0, phi, p and Lambda-0 in Hadronic Z0 Decays
• Parton-to-Kaon Fragmentation Revisited
• On Third-Order Timelike Splitting Functions and Top-Mediated Higgs Decay into Hadrons
• QCD Corrections to Semi-Inclusive Hadron Production in Electron-Positron Annihilation at Two Loops
• On the Next-to-Next-to-Leading Order Evolution of Flavour-Singlet Fragmentation Functions
• Next-To-Leading Order Determination of Fragmentation Functions
• One-Particle Inclusive Processes in Deeply Inelastic Lepton-Nucleon Scattering
• $O({\alpha }_s^2)$ Contributions to the longitudinal fragmentation function in $e^{+}{e}^{-}$ annihilation
• Next-to-Leading Order Evolution of Polarized and Unpolarized Fragmentation Functions
• Jet substructure using semi-inclusive jet functions within SCET
• Production of light-flavor hadrons in pp collisions at $\sqrt{s}$ = 7 and $\sqrt{s}$ = 13 TeV
• ${\pi }^0$ and $\eta$ meson production in proton-proton collisions at $\sqrt{s}=8$ TeV
• First Monte Carlo analysis of fragmentation functions from single-inclusive $e^{+}{e}^{-}$ annihilation
• Global Analysis of Fragmentation Functions for Eta Mesons
• $O({\alpha }_s^2)$ Timelike Wilson Coefficients for Parton-Fragmentation Functions in Mellin Space
• Pion and kaon fragmentation functions at next-to-next-to-leading order
• Next-to-leading order QCD corrections to one hadron-production in polarized pp collisions at RHIC
• Fragmentation functions from semi-inclusive DIS pion production and implications for the polarized parton densities
• Measurement of inclusive particle spectra and test of MLLA prediction in $e^{+}{e}^{-}$ annihilation at $\sqrt{s}$=58GeV
• Cross section and double helicity asymmetry for eta mesons and their comparison to neutral pion production in p+p collisions at sqrt(s)=200 GeV
• Inclusive cross section and double-helicity asymmetry for ${\pi }^0$ production at midrapidity in $p$$+$$p$ collisions at $\sqrt{s}=510$ GeV
• Using hadron-in-jet data in a global analysis of $D^{\ast }$ fragmentation functions
• Fragmentation Functions at Next-to-Next-to-Leading Order Accuracy
• Leading Particle Production in Light Flavour Jets
• A determination of unpolarised pion fragmentation functions using semi-inclusive deep-inelastic-scattering data: MAPFF1.0
• Fragmentations Functions in Nuclear Media
• Analytic Continuation and Reciprocity Relation for Collinear Splitting in QCD
• Inclusive pi^0, eta, and direct photon production at high transverse momentum in p+p and d+Au collisions at sqrt(s_NN) = 200 GeV
• Fragmentation Functions for K0short and Lambda with Complete Quark Flavour Separation
• TMD Fragmentation Functions at N${}^3$LO
• Charged and Identified Particles in the Hadronic Decay of W Bosons and in e+e- -> q qbar from 130 to 200 GeV
• Transverse-Energy-Energy Correlations in Deep Inelastic Scattering
• Production of ${\pi }^0$ and $\eta$ mesons up to high transverse momentum in pp collisions at 2.76 TeV
• Semi-inclusive deep-inelastic scattering at NNLO in QCD
• Neutral-Kaon Production in e^+e^-, ep, and p\bar p Collisions at Next-to-Leading Order
• First global QCD analysis of charged hadron fragmentation functions and their uncertainties at next-to-next-to-leading order
• Unpolarized Quark and Gluon TMD PDFs and FFs at N${}^3$LO
• Global analysis of fragmentation functions to charged hadrons with high-precision data from the LHC
• Transverse Lambda production at the future Electron-Ion Collider
• Higher-order threshold resummation for semi-inclusive e^+e^- annihilation
• Jet fragmentation functions for $Z$-tagged jets
• Probing fragmentation functions from same-side hadron-jet momentum correlations in p-p collisions
• Multiplicities of pizero, eta, Kzero and of charged particles in quark and gluon jets
• Strangeness Production in Deep-Inelastic Positron-Proton Scattering at HERA
• Simultaneous Determination of Fragmentation Functions and Test on Momentum Sum Rule
• Isospin Symmetry of Fragmentation Functions
• Multidifferential study of identified charged hadron distributions in $Z$-tagged jets in proton-proton collisions at $\sqrt{s}=$13 TeV
• Polarized semi-inclusive electroweak structure functions at next-to-leading-order
• Threshold resummation at N${}^3$LL accuracy and approximate N${}^3$LO corrections to semi-inclusive DIS
• Inclusive Production of the omega and eta Mesons in Z Decays, and the Muonic Branching Ratio of the omega
• Longitudinal and transverse polarizations of $\Lambda$ hyperon in unpolarized SIDIS and $e^{+}{e}^{-}$ annihilation
• Automated calculation of Jet fragmentation at NLO in QCD
• Simultaneous extraction of fragmentation functions of light charged hadrons with mass corrections
• Quasifragmentation functions in the massive Schwinger model
• Fragmentation Functions of Charged Hadrons at Next-to-Next-to-Leading Order and Constraints on the Proton Parton Distribution Functions
• Measurements of Differential Cross Sections of Inclusive ${\pi }^0$ and $K_S^0$ Production in $e^{+}{e}^{-}$ Annihilation at Energies from 2.2324 to 3.6710 GeV
• Transverse Energy-Energy Correlators in the Color-Glass Condensate at the Electron-Ion Collider
• Hadron-in-jet production at partonic threshold
• First NNLO fragmentation functions of $K_S^0$ and $\Lambda /\bar{\Lambda }$ and their uncertainties in the presence of hadron mass corrections
• Production of $\eta$ and ${\eta }^{\prime }$ mesons in $pp$ and $p$Pb collisions
• Scaled momentum distributions for K0s and Lambda/bar Lambda in DIS at HERA
• Determination of $K_S^0$ Fragmentation Functions including BESIII Measurements and using Neural Networks
• Production cross sections of light and charmed mesons in $e^{+}{e}^{-}$ annihilation near 10.58 GeV
• Light neutral-meson production in pp collisions at $\sqrt{\mathbf{s}}$ = 13 TeV
• Study of nuclear corrections on the charged hadron fragmentation functions in a Neural Network global QCD analysis
• Semi-Inclusive Jet Functions and Jet Substructure in $J_{E_T}^{(I)}$ and $J_{E_T}^{(II)}$ Algorithms

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