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Experimental determination of the evolution of the Bjorken integral at low Q²

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arxiv hep-ex/0407007 v2 pith:2CQHSJFR submitted 2004-07-01 hep-ex hep-phnucl-ex

Experimental determination of the evolution of the Bjorken integral at low Q²

classification hep-ex hep-phnucl-ex
keywords integralbjorkenextractnucleonpolarizedbridgecombinationdata
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We extract the Bjorken integral Gamma^{p-n}_1 in the range 0.17 < Q^2 < 1.10 GeV^2 from inclusive scattering of polarized electrons by polarized protons, deuterons and 3He, for the region in which the integral is dominated by nucleon resonances. These data bridge the domains of the hadronic and partonic descriptions of the nucleon. In combination with earlier measurements at higher Q^2, we extract the non-singlet twist-4 matrix element f_2.

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Cited by 2 Pith papers

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