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000872905 037__ $$aFZJ-2020-00370
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000872905 1001_ $$0P:(DE-HGF)0$$aHorsley, Roger$$b0$$eCorresponding author
000872905 1112_ $$aThe 36th Annual International Symposium on Lattice Field Theory$$cMichigan State University$$d2018-07-22 - 2018-07-28$$wEast Lansing
000872905 245__ $$aThe strange quark contribution to the spin of the nucleon
000872905 260__ $$bSissa Medialab             Trieste, Italy$$c2019
000872905 29510 $$aProceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018) - Sissa Medialab             Trieste, Italy, 2019. - ISBN  - doi:10.22323/1.334.0119
000872905 300__ $$a119
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000872905 520__ $$aQuark line disconnected matrix elements of an operator, such as the axial current, are difficult to compute on the lattice. The standard method uses a stochastic estimator of the operator, which is generally very noisy. We discuss and develop further our alternative approach using the Feynman-Hellmann theorem which involves only evaluating two-point correlation functions. This is applied to computing the contribution of the quark spin to the nucleon and in particular for the strange quark. In this process we also pay particular attention to the development of an SU(3) flavour breaking expansion for singlet operators.
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000872905 7001_ $$0P:(DE-HGF)0$$aNakamura, Yoshifumi$$b1
000872905 7001_ $$0P:(DE-HGF)0$$aPerlt, Holger$$b2
000872905 7001_ $$0P:(DE-Juel1)144441$$aPleiter, D.$$b3$$ufzj
000872905 7001_ $$0P:(DE-HGF)0$$aRakow, P. E. L.$$b4
000872905 7001_ $$0P:(DE-HGF)0$$aSchierholz, Gerrit$$b5
000872905 7001_ $$0P:(DE-HGF)0$$aSchiller, Arwed$$b6
000872905 7001_ $$0P:(DE-HGF)0$$aStuben, Hinnerk$$b7
000872905 7001_ $$0P:(DE-HGF)0$$aYoung, Ross D.$$b8
000872905 7001_ $$0P:(DE-HGF)0$$aZanotti, J. M.$$b9
000872905 773__ $$a10.22323/1.334.0119
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