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SUMMARY:Gluon Helicity Distribution of the Nucleon from Lattice QCD in Con
 tinuum Limit
DTSTART;VALUE=DATE-TIME:20261010T090500Z
DTEND;VALUE=DATE-TIME:20261010T092000Z
DTSTAMP;VALUE=DATE-TIME:20261005T114247Z
UID:indico-contribution-2810@indico.itp.ac.cn
DESCRIPTION:Speakers: 诗怡 钟 (CUHK(SZ))\nWe report a state-of-the-art 
 lattice QCD calculation of the gluon helicity parton distribution function
  of the proton within the large-momentum effective theory framework. The c
 alculation employs 2+1-flavor CLQCD gauge ensembles at three lattice spaci
 ngs $a=\\{0.105\, 0.0897\, 0.0775\\}$ fm and pion mass of approximately $3
 00$ MeV/$c^2$\, with nucleon momenta up to $3.0$ GeV/$c$. Distillation wit
 h momentum smearing is applied to improve the signal of two-point gluon-fi
 eld correlation functions. We renormalize the results in the hybrid scheme
 \, applying self-renormalization to purely imaginary and antisymmetric mat
 rix elements.\nAfter one-loop perturbative matching\, the gluon helicity d
 istribution\nis extrapolated to the continuum and infinite-momentum limits
 . The final result is consistent with global fitting within errors.\n\nhtt
 ps://indico.itp.ac.cn/event/437/contributions/2810/
LOCATION:会议楼2 CXII103
URL:https://indico.itp.ac.cn/event/437/contributions/2810/
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