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000423245 1001_ $$0P:(DE-HGF)0$$aHorsley, Roger$$b0$$eCorresponding author
000423245 1112_ $$0C18-07-22$$2inspire$$aThe 36th Annual International Symposium on Lattice Field Theory$$cMichigan State University$$d2018-07-22 - 2018-07-28$$gLATTICE2018$$wEast Lansing
000423245 245__ $$aThe strange quark contribution to the spin of the nucleon
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000423245 520__ $$aQuark line disconnected matrix elements of an operator, such as the axial current, are difficult to compute on the lattice. The standard method uses a stochastic estimator of the operator, which is generally very noisy. We discuss and develop further our alternative approach using the Feynman-Hellmann theorem which involves only evaluating two-point correlation functions. This is applied to computing the contribution of the quark spin to the nucleon and in particular for the strange quark. In this process we also pay particular attention to the development of an SU(3) flavour breaking expansion for singlet operators.
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000423245 7001_ $$aNakamura, Y.$$b1
000423245 7001_ $$aPerlt, H.$$b2
000423245 7001_ $$aPleiter, D.$$b3
000423245 7001_ $$aRakow, P. E. L.$$b4
000423245 7001_ $$0P:(DE-H253)PIP1001621$$aSchierholz, Gerrit$$b5
000423245 7001_ $$aSchiller, A.$$b6
000423245 7001_ $$aStuben, H.$$b7
000423245 7001_ $$aYoung, R. D.$$b8
000423245 7001_ $$aZanotti, J. M.$$b9
000423245 773__ $$0PERI:(DE-600)2642026-0$$a10.22323/1.334.0119$$p119$$tProceedings of Science / International School for Advanced Studies$$v(LATTICE2018)$$x1824-8039$$y2019
000423245 7870_ $$0PUBDB-2019-00786$$aHorsley, R. et.al.$$d2019$$iIsParent$$rarXiv:1901.04792; ADP-18-32-T1080; DESY-18-220; Liverpool-LTH-1190$$tThe strange quark contribution to the spin of the nucleon
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