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000917416 005__ 20230123101928.0
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000917416 1001_ $$0P:(DE-HGF)0$$aEngelhardt, Michael$$b0$$eCorresponding author
000917416 1112_ $$aThe 38th International Symposium on Lattice Field Theory$$cZoom/Gather@Massachusetts Institute of Technology$$d2021-07-26 - 2021-07-30$$wUSA
000917416 245__ $$aQuark spin-orbit correlations in the proton
000917416 260__ $$bSissa Medialab Trieste, Italy$$c2022
000917416 29510 $$aProceedings of The 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021) - Sissa Medialab Trieste, Italy, 2022. - ISBN - doi:10.22323/1.396.0413
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000917416 520__ $$aGeneralized transverse momentum-dependent parton distributions (GTMDs) provide a comprehensive framework for imaging the internal structure of the proton. In particular, by encoding the simultaneous distribution of quark transverse positions and momenta, they allow one to directly access longitudinal quark orbital angular momentum, and, moreover, to correlate it with the quark helicity. The relevant GTMD is evaluated through a lattice calculation of a proton matrix element of a quark bilocal operator (the separation in which is Fourier conjugate to the quark momentum)featuring a momentum transfer (which is Fourier conjugate to the quark position), as well as the Dirac structure appropriate for capturing the quark helicity. The weighting by quark transverse position requires a derivative with respect to momentum transfer, which is obtained in unbiasedfashion using a direct derivative method. The lattice calculation is performed directly at the physical pion mass, using domain wall fermions to mitigate operator mixing effects. Both the Jaffe-Manohar as well as the Ji quark spin-orbit correlations are extracted, yielding evidence for a strong quark spin-orbit coupling in the proton.
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000917416 7001_ $$0P:(DE-HGF)0$$aGreen, Jeremy$$b1
000917416 7001_ $$0P:(DE-HGF)0$$aHasan, Nesreen$$b2
000917416 7001_ $$0P:(DE-HGF)0$$aIzubuchi, Taku$$b3
000917416 7001_ $$0P:(DE-HGF)0$$aKallidonis, Christos$$b4
000917416 7001_ $$0P:(DE-Juel1)132171$$aKrieg, Stefan$$b5
000917416 7001_ $$0P:(DE-HGF)0$$aLiuti, Simonetta$$b6
000917416 7001_ $$0P:(DE-HGF)0$$aMeinel, Stefan$$b7
000917416 7001_ $$0P:(DE-HGF)0$$aNegele, John$$b8
000917416 7001_ $$0P:(DE-HGF)0$$aPochinsky, Andrew$$b9
000917416 7001_ $$0P:(DE-HGF)0$$aRajan, Abha$$b10
000917416 7001_ $$0P:(DE-Juel1)171116$$aSilvi, Giorgio$$b11
000917416 7001_ $$0P:(DE-HGF)0$$aSyritsyn, Sergey$$b12
000917416 773__ $$a10.22323/1.396.0413
000917416 8564_ $$uhttps://pos.sissa.it/396/413
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000917416 9141_ $$y2022
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