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SUMMARY:Precision determination of nucleon iso-vector scalar and tensor ch
 arges at the physical point
DTSTART;VALUE=DATE-TIME:20261010T074000Z
DTEND;VALUE=DATE-TIME:20261010T075500Z
DTSTAMP;VALUE=DATE-TIME:20261005T001926Z
UID:indico-contribution-2821@indico.itp.ac.cn
DESCRIPTION:Speakers: 积昊 王 (Institute of Theoretical Physics，Chine
 se Academy of Sciences)\nWe report a high precision calculation of the iso
 spin vector charge $g_{S\,T}$ of the nucleon using recently proposed "blen
 ding" method which provides a high-precision stochastic estimate of the al
 l-to-all fermion propagator.  A spin-$1/2$\, isospin-$1/2$ projected curre
 nt-involved basis element is utilized to reduce a particular nucleon-meson
  type excited state contamination whose coupling to the current operator i
 s enhanced by the lattice spatial volume. Using 16 $N_f=2+1$ lattice ensem
 bles which cover 5 lattice spacing\, 5 combinations with the same quark ma
 sses and lattice spacing but multiple volumes\, including three at the phy
 sical pion mass\, we report so far most precise lattice QCD prediction wit
 h the systematic uncertainties from continuum\, infinite volume\, chiral e
 xtrapolations\, excited state contamination and also renormalization.\n\nh
 ttps://indico.itp.ac.cn/event/437/contributions/2821/
LOCATION:会议楼2 CXII103
URL:https://indico.itp.ac.cn/event/437/contributions/2821/
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