Quark and gluon momentum fractions in the pion from lattice QCD
arXiv:2109.10692 · doi:10.1103/PhysRevLett.127.252001
Abstract
We perform the first full decomposition of the pion momentum into its gluon and quark contributions. We employ an ensemble generated by the Extended Twisted Mass Collaboration with Wilson twisted mass clover fermions at maximal twist tuned to reproduce the physical pion mass. We present our results in the scheme at $2\gev$. We find $\avgx_{u+d}=0.601(28)$, $\avgx_s=0.059(13)$, $\avgx_c=0.019(05)$, and $\avgx_g=0.52(11)$ for the separate contributions, respectively, whose sum saturates the momentum sum rule.
References in corpus (44)
- Parton distributions from high-precision collider data
- New parton distribution functions from a global analysis of quantum chromodynamics
- Leading hadronic contribution to the muon magnetic moment from lattice QCD
- Parton Physics on Euclidean Lattice
- Analytic Smearing of SU(3) Link Variables in Lattice QCD
- Solving Lattice QCD systems of equations using mixed precision solvers on GPUs
- Parton Distribution Functions, and Heavy-Quark Masses for LHC Run II
- Chirally improving Wilson fermions - I. O(a) improvement
- Quasi-PDFs, momentum distributions and pseudo-PDFs
- A QCD Analysis of the Mass Structure of the Nucleon
- Chirally improving Wilson fermions II. Four-quark operators
- Exploring hadrons' partonic structure using ab initio lattice QCD calculations
- Pion and Rho Structure Functions from Lattice QCD
- First Monte Carlo global QCD analysis of pion parton distributions
- BREAKUP OF HADRON MASSES AND ENERGY-MOMENTUM TENSOR OF QCD
- Twisted-mass lattice QCD with mass non-degenerate quarks
- Pion Valence Quark Distribution from Matrix Element Calculated in Lattice QCD
- Gluon gravitational form factors of the nucleon and the pion from lattice QCD
- Pion Valence Structure from Ioffe Time Pseudo-Distributions
- Complete flavor decomposition of the spin and momentum fraction of the proton using lattice QCD simulations at physical pion mass
- The nucleon spin and momentum decomposition using lattice QCD simulations
- First direct lattice-QCD calculation of the -dependence of the pion parton distribution function
- On the hadron mass decomposition
- Simultaneous Monte Carlo analysis of parton densities and fragmentation functions
- tmLQCD: a program suite to simulate Wilson Twisted mass Lattice QCD
- Nucleon and pion structure with lattice QCD simulations at physical value of the pion mass
- Parton Distribution Functions of the Charged Pion Within The xFitter Framework
- Symmetry, symmetry breaking, and pion parton distributions
- Valence parton distribution of pion from lattice QCD: Approaching continuum
- Simulating twisted mass fermions at physical light, strange and charm quark masses
- Pion valence quark distribution from current-current correlation in lattice QCD
- Quark and gluon contributions to the QCD trace anomaly
- Revisiting the proton mass decomposition
- Valence-Quark Distribution of the Kaon and Pion from Lattice QCD
- and of the pion PDF from Lattice QCD with dynamical quark flavours
- Non-perturbative Pion Matrix Element of a twist-2 operator from the Lattice
- Deflation as a Method of Variance Reduction for Estimating the Trace of a Matrix Inverse
- Gluon contributions to the pion mass and light cone momentum fraction
- Lemon: an MPI parallel I/O library for data encapsulation using LIME
- Implementation of Symanzik's Improvement Program for Simulations of Dynamical Wilson Fermions in Lattice QCD
- The pion and kaon from lattice QCD and PDF reconstruction from Mellin moments
- Three-loop formula for quark and gluon contributions to the QCD trace anomaly
- Parton Distribution Functions with Twisted Mass Fermions
- The Mellin moments and for the pion and kaon from lattice QCD