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Unpolarized gluon PDF of the nucleon from lattice QCD at physical point in the continuum limit

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arxiv 2510.26425 v2 pith:RCUSQAJQ submitted 2025-10-30 hep-lat

Unpolarized gluon PDF of the nucleon from lattice QCD at physical point in the continuum limit

Chen Chen , Chunhua Zeng , Hongxin Dong , Liuming Liu , Xiaomin Shen , Peng Sun , Xiaonu Xiong , Yi-Bo Yang
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Fei Yao Jian-Hui Zhang Shiyi Zhong
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classification hep-lat
keywords latticelimitcalculationcontinuumgluonnucleonphysicalpion
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report a state-of-the-art lattice QCD calculation of the nucleon unpolarized gluon parton distribution function employing large-momentum effective theory. The calculation is carried out on the 2+1 flavor CLQCD ensembles with five lattice spacings a={0.105,0.0897,0.0775, 0.0688, 0.0519} fm and various pion masses ranging from 136 MeV to 317 MeV, covering nulceon momenta up to 3 GeV. Distillation technique is applied to improve the signal of two-point correlators. We then apply the state-of-the-art hybrid renormalization and one-loop perturbative matching, and extrapolate the result to the continuum limit, infinite momentum limit and physical pion mass.

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Cited by 4 Pith papers

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