Pion form-factors from lattice: toward the continuum limit

ORAL

Abstract

We will present lattice results in 2$+$1 flavor QCD on the pion formfactor in a wide range of momentum transfer using staggered sea quarks with improvedclover quarks in the valance sector. Our study uses three lattice spacings, a$=$0.076fm, 0.06fm, and 0.04fm, and two pion masses, a pion mass of about 300 MeV and the physical pion mass. This allows us to control the continuum limit as well as the quark mass effects.

*This material is based upon work supported by the U.S. Department of Energy, Office of Science, through the contract DE-SC0012704

–

Authors

  • Peter Petreczky

    • Brookhaven National Laboratory

  • Gao Xiang

    • Tsinghua University and Brookhaven National Laboratory
    • Brookhaven National Laboratory
    • Brookhaven National Laboratory and Tsinghua University

  • Nikhil Karthik

    • Jefferson Lab

  • Swagato Mukherjee

    • Brookhaven National Laboratory

  • Sergey Syritsyn

    • RIKEN-BNL and Stony Brook University

  • Yong Zhao

    • Brookhaven National Laboratory