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Twist-3 axial GPDs of the proton from lattice QCD
Constantinou, Martha Bhattacharya, Shohini Cichy, Krzysztof Dodson, Jack Metz, Andreas Steffens, Fernanda Scapellato, Aurora
Constantinou, Martha
Bhattacharya, Shohini
Cichy, Krzysztof
Dodson, Jack
Metz, Andreas
Steffens, Fernanda
Scapellato, Aurora
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Conference proceeding
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2024-05-02
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Physics
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https://doi.org/10.22323/1.453.0315
Abstract
In these proceedings, we summarize results from the first lattice-QCD calculation of the twist-3 axial quark GPDs for the proton using the large-momentum effective theory approach. The calculation is performed using one Nf=2+1+1
ensemble of maximally twisted mass fermions with a clover term, that has a volume 323×64
, lattice spacing 0.0934 fm, and a pion mass of 260 MeV. The momentum boost of the nucleon matrix elements is 0.83, 1.25, and 1.67 GeV, and the 4-vector momentum transfer squared is 0.69, 1.38, and 2.76 GeV2
. We perform a number of consistency checks, such as the Burkhardt-Cottingham-type as well as Efremov-Teryaev-Leader-type sum rules.
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Sissa Medialab
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Proceedings of The 40th International Symposium on Lattice Field Theory — PoS(LATTICE2023)
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