Jet Charge with Global Event Shapes: Probing Quark Flavor Dynamics

Abstract

We propose measuring the jet electric charge of jet regions, defined within the framework of global event shapes, as a probe of quark flavor dynamics within the nucleon and the hadronization process. In particular, we consider a measurement of the jet region charge while simultaneously keeping track of the energy flow throughout the event, as characterized by the global event shape. As a concrete example, we focus on the measurement of the 1-Jettiness jet charge ($Q$), the jet charge of the jet region ($J$) defined within the framework of the 1-Jettiness global event shape (${\tau }_1$) for the Deep Inelastic Scattering (DIS) process, $e^{-}+p\to e^{-}+J+X$, with unpolarized or longitudinally polarized protons. The 1-Jettiness distribution, binned according to jet charge, allows for enhanced quark flavor separation of the initial state unpolarized or polarized PDFs. On the other hand, the jet charge distribution binned by 1-Jettiness can serve as a probe of quark flavor dynamics in the final state hadronization process. We derive a factorization theorem for simultaneous measurements of ${\tau }_1$ and $Q$ in the resummation region, ${\tau }_1\ll P_{J_T}$, where $P_{J_T}$ denotes the transverse momentum of the jet region. The factorization theorem contains a new universal charged jet function, generalizing the standard jet function to include a jet charge measurement. Therefore these universal functions can be extracted from a global analysis of N-jettiness and thrust at $e^{+}{e}^{-}$ colliders. We provide simulation studies to demonstrate the sensitivity of the 1-Jettiness jet charge observable to quark flavor dynamics in nucleon structure and explore the possibility of probing the final state hadronization process. This observable is well-suited for applications with existing HERA data and the future Electron-Ion Collider (EIC).

19 pages, 10 figures, references added, version to appear in Physical Review D

References in corpus (76)

• An Introduction to PYTHIA 8.2
• An effective field theory for collinear and soft gluons: heavy to light decays
• Soft-Collinear Factorization in Effective Field Theory
• Summing Sudakov logarithms in B -> X_s + gamma in effective field theory
• Invariant Operators in Collinear Effective Theory
• Multiple Collisions and Induced Gluon Bremsstrahlung in QCD
• Hard Scattering Factorization from Effective Field Theory
• Soft-collinear effective theory and heavy-to-light currents beyond leading power
• N-Jettiness: An Inclusive Event Shape to Veto Jets
• Jet Substructure at the Large Hadron Collider: A Review of Recent Advances in Theory and Machine Learning
• Thrust at N^3LL with Power Corrections and a Precision Global Fit for alphas(mZ)
• The LPM effect in QCD and Radiative energy loss in a quark-gluon plasma
• Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering
• A precise determination of alpha_s from LEP thrust data using effective field theory
• Power corrections to event shapes and factorization
• Factorization at the LHC: From PDFs to Initial State Jets
• Jets from Massive Unstable Particles: Top-Mass Determination
• Review of Jet Measurements in Heavy Ion Collisions
• Top Jets in the Peak Region: Factorization Analysis with NLL Resummation
• Quark and Gluon Tagging at the LHC
• Momentum Flow Correlations from Event Shapes: Factorized Soft Gluons and Soft-Collinear Effective Theory
• Toward a NNLO calculation of the B-->X_s+gamma decay rate with a cut on photon energy: II. Two-loop result for the jet function
• The Quark Beam Function at NNLL
• Resummation of heavy jet mass and comparison to LEP data
• Resummation of Threshold Logarithms in Effective Field Theory For DIS, Drell-Yan and Higgs Production
• Jet Charge at the LHC
• Shape function effects in B -> X_s gamma and B -> X_u l nu decays
• The N-jettiness soft function at next-to-next-to-leading order
• Identification techniques for highly boosted W bosons that decay into hadrons
• The Quark Beam Function at Two Loops
• Enhanced Nonperturbative Effects in Z Decays to Hadrons
• Calculating the Charge of a Jet
• Probing the hardest branching of jets in heavy ion collisions
• Precision Thrust Cumulant Moments at N^3LL
• The Soft Function for Exclusive N-Jet Production at Hadron Colliders
• Lepton-jet Correlations in Deep Inelastic Scattering at the Electron-Ion Collider
• Resummed event-shape variables in DIS
• Using 1-Jettiness to Measure 2 Jets in DIS 3 Ways
• The Three-loop Quark Jet Function
• Jet Charge and Machine Learning
• Experimental discrimination between charge 2e/3 top quark and charge 4e/3 exotic quark production scenarios
• Extracting a Short Distance Top Mass with Light Grooming
• Measurement of jet charge in dijet events from sqrt(s)=8 TeV pp collisions with the ATLAS detector
• 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
• Jets as precision probes in electron-nucleus collisions at the Electron-Ion Collider
• Lepton-jet Correlation in Deep Inelastic Scattering
• Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at $\sqrt{s}=500$ GeV
• Boosted $W/Z$ Tagging with Jet Charge and Deep Learning
• The 1-Jettiness DIS event shape: NNLL + NLO results
• Accessing the Gluon Sivers Function at a future Electron-Ion Collider
• Jet angularities in photoproduction at the Electron-Ion Collider
• N-Jettiness as a probe of nuclear dynamics
• Measurements of jet charge with dijet events in pp collisions at sqrt(s) = 8 TeV
• Asymmetric jet clustering in deep-inelastic scattering
• Impact of gluon polarization on Higgs plus jet production at the LHC
• Probing nuclear dynamics in jet production with a global event shape
• Jet charge modification in dense QCD matter
• Measurement of the top quark charge in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Measurement of quark- and gluon-like jet fractions using jet charge in PbPb and pp collisions at 5.02 TeV
• Boosted Top Quarks in the Peak Region with N${}^3$LL Resummation
• Exclusion of exotic top-like quarks with -4/3 electric charge using jet-charge tagging in single-lepton ttbar events at CDF
• Jet Charge: A new tool to probe the anomalous $Zb\bar{b}$ couplings at the EIC
• Data-driven quark and gluon jet modification in heavy-ion collisions
• An Optimal Observable for Color Singlet Identification
• Analytic Calculation of 1-Jettiness in DIS at $\mathcal{O}({\alpha }_s)$
• The spin-dependent quark beam function at NNLO
• The Sivers Asymmetry in Hadronic Dijet Production
• Understanding Jet Charge
• Dynamic Jet Charge
• Discriminating between Higgs Production Mechanisms via Jet Charge at the LHC
• 1-jettiness with jet axis at $O({\alpha }_s)$ in jeep inelastic scattering
• The DIS 1-Jettiness Event Shape at N${}^3$LL+$\mathcal{O}({\alpha }_s^2)$
• Precision $e^{+}{e}^{-}$ Hemisphere Masses in the Dijet Region with Power Corrections
• Precision DIS thrust predictions for HERA and EIC