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arXiv · hep-ph/9710544

Instanton-induced charm contribution to polarized deep-inelastic scattering

Andree Blotz·Edward Shuryak
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Abstract

Recent data on B decays involving $η'$ may be explained if the singlet axial current of charmed quarks has large matrix element to $η'$, and instantons were shown to be able to generate this effect. We study the magnitude of charm contributions to nucleon polarized structure functions generated in a similar way. Comparing the charm contribution, which is related to a dim(6) gluonic operator, to that of light quarks, which are related by the anomaly equation to $G\tilde G$, we found that $Δc/ΔΣ$ = -(0.2-0.08). Future experiments like COMPASS at CERN identifying charm production in DIS can measure this ``intrinsic polarized charm'' component of the nucleon.

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Andree Blotz, Edward Shuryak. 1998-02-23. Instanton-induced charm contribution to polarized deep-inelastic scattering. https://doi.org/10.1016/s0370-2693(98)01051-x

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