Jet fragmentation functions for $Z$-tagged jets

Abstract

Recently the LHCb collaboration has measured both longitudinal and transverse momentum distribution of hadrons produced inside $Z$-tagged jets in proton-proton collisions at the Large Hadron Collider. These distributions are commonly referred to as jet fragmentation functions and are characterized by the longitudinal momentum fraction $z_h$ of the jet carried by the hadron and the transverse momentum $j_{\perp }$ with respect to the jet direction. We derive a QCD formalism within Soft-Collinear Effective Theory to describe these distributions and find that the $z_h$-dependence provides information on standard collinear fragmentation functions, while $j_{\perp }$-dependence probes transverse momentum dependent (TMD) fragmentation functions. We perform theoretical calculations and compare our results with the LHCb data. We find good agreement for the intermediate $z_h$ region. For $j_{\perp }$-dependence, we suggest binning in both $z_h$ and $j_{\perp }$, which would lead to a more direct probing of TMD fragmentation functions.

arXiv comment9 pages, 4 figures

References in corpus (38)

• A Brief Introduction to PYTHIA 8.1
• An effective field theory for collinear and soft gluons: heavy to light decays
• Soft-Collinear Factorization in Effective Field Theory
• The Three-Loop Splitting Functions in QCD: The Non-Singlet Case
• Fragmentation of Transversely Polarized Quarks Probed in Transverse Momentum Distributions
• Summing Sudakov logarithms in B -> X_s + gamma in effective field theory
• Invariant Operators in Collinear Effective Theory
• Hard Scattering Factorization from Effective Field Theory
• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Resummation of non-global QCD observables
• A Formalism for the Systematic Treatment of Rapidity Logarithms in Quantum Field Theory
• Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering
• Jet Shapes and Jet Algorithms in SCET
• Model Independent Evolution of Transverse Momentum Dependent Distribution Functions (TMDs) at NNLL
• Measurement of jet fragmentation into charged particles in pp and PbPb collisions at sqrt(s[NN]) = 2.76 TeV
• Calculating the Charge of a Jet
• Parton Fragmentation within an Identified Jet at NNLL
• Measurement of the jet fragmentation function and transverse profile in proton-proton collisions at a center-of-mass energy of 7 TeV with the ATLAS detector
• Study of $J/\psi$ production in jets
• Azimuthal Asymmetric Distribution of Hadrons Inside a Jet at Hadron Collider
• Collins azimuthal asymmetries of hadron production inside jets
• The Energy Distribution of Subjets and the Jet Shape
• Resummation of jet-veto logarithms in hadronic processes containing jets
• NRQCD Confronts LHCb Data on Quarkonium Production within Jets
• Using hadron-in-jet data in a global analysis of $D^{\ast }$ fragmentation functions
• Resummation for W and Z production at large pT
• Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at $\sqrt{s}=500$ GeV
• Measurement of D*+/- meson production in jets from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• $J/\psi$ production and polarization within a jet
• Fragmentation Functions Beyond Fixed Order Accuracy
• Measurement of jet fragmentation in 5.02 TeV proton-lead and proton-proton collisions with the ATLAS detector
• Fragmentation to a jet in the large $z$ limit
• Measurement of charged hadron production in $Z$-tagged jets in proton-proton collisions at $\sqrt{s}=8$ TeV
• The Jet Shape at NLL${}^{\prime }$
• A transverse momentum dependent framework for back-to-back photon+jet production
• Efficient Fourier Transforms for Transverse Momentum Dependent Distributions
• Comparison of fragmentation functions for light-quark- and gluon-dominated jets from $pp$ and Pb+Pb collisions in ATLAS
• Charged hadron fragmentation functions from collider data

Cited by in corpus (24)

• Jet-based measurements of Sivers and Collins asymmetries at the future Electron-Ion Collider
• Polarized jet fragmentation functions
• Jet Charge: A Flavor Prism for Spin Asymmetries at the EIC
• Spin asymmetries in electron-jet production at the future electron ion collider
• Global analysis of fragmentation functions to charged hadrons with high-precision data from the LHC
• Transverse Lambda production at the future Electron-Ion Collider
• Multidifferential study of identified charged hadron distributions in $Z$-tagged jets in proton-proton collisions at $\sqrt{s}=$13 TeV
• QCD resummation on single hadron transverse momentum distribution with the thrust axis
• Automated calculation of Jet fragmentation at NLO in QCD
• Neutrino-tagged jets at the Electron-Ion Collider
• Efficient Fourier Transforms for Transverse Momentum Dependent Distributions
• Hadron-in-jet production at partonic threshold
• Precision three-dimensional imaging of nuclei using recoil-free jets
• Global analysis of fragmentation functions to light neutral hadrons
• Polarized fragmenting jet functions in Inclusive and Exclusive Jet Production
• N${}^3$LL + $\mathcal{O}({\alpha }_s^2)$ predictions of lepton-jet azimuthal angular distribution in deep-inelastic scattering
• Spin Asymmetries in Electron-jet Production at the EIC
• Quenching of jets tagged with $W$ bosons in high-energy nuclear collisions
• Hadron productions and jet substructures associated with $Z^0/\gamma$ in Pb+Pb collisions at the LHC
• Hadronization effects on transverse momentum dependent jet fragmentation function in small systems
• Soft background fields at next-to-leading power in transverse momentum dependent SIDIS with jets
• Transverse momentum asymmetry in the semi-inclusive electron positron annihilation process
• $B$-jet fragmentation with $B^{\pm }\to J/\psi K^{\pm }$ decays in $\sqrt{s}=13$ TeV $pp$ collisions at LHCb
• Parton Fragmentation Functions