Heavy-quark contribution to the proton's magnetic moment

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dc.creatorJi, Xiangdong
dc.creatorToublan, D.
dc.date2006-05-05
dc.date.accessioned2026-07-07T10:24:53Z
dc.date.available2026-07-07T10:24:53Z
dc.descriptionWe study the contribution to the proton's magnetic moment from a heavy quark sea in quantum chromodynamics. The heavy quark is integrated out perturbatively to obtain an effective dimension-6 magnetic moment operator composed of three gluon fields. The leading contribution to the matrix element in the proton comes from a quadratically divergent term associated with a light-quark tensor operator. With an approximate knowledge of the proton's tensor charge, we conclude that a heavy sea-quark contribution to the proton's magnetic moment is positive in the asymptotic limit. We comment on the implication of this result for the physical strange quark.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0605055
dc.identifierhttp://arxiv.org/abs/hep-ph/0605055
dc.identifierPhys.Lett.B647:361-365,2007
dc.identifierdoi:10.1016/j.physletb.2007.02.047
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176349
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHeavy-quark contribution to the proton's magnetic moment
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