Hadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter

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dc.creatorEllis, John
dc.creatorOlive, Keith A.
dc.creatorSavage, Christopher
dc.date2008-01-23
dc.date2008-02-07
dc.date.accessioned2026-07-07T11:55:29Z
dc.date.available2026-07-07T11:55:29Z
dc.descriptionWe review the uncertainties in the spin-independent and -dependent elastic scattering cross sections of supersymmetric dark matter particles on protons and neutrons. We propagate the uncertainties in quark masses and hadronic matrix elements that are related to the $π$-nucleon $σ$ term and the spin content of the nucleon. By far the largest single uncertainty is that in spin-independent scattering induced by our ignorance of the $<N | {\bar q} q | N>$ matrix elements linked to the $π$-nucleon $σ$ term, which affects the ratio of cross sections on proton and neutron targets as well as their absolute values. This uncertainty is already impacting the interpretations of experimental searches for cold dark matter. {\it We plead for an experimental campaign to determine better the $π$-nucleon $σ$ term.} Uncertainties in the spin content of the proton affect significantly, but less strongly, the calculation of rates used in indirect searches.
dc.description25 pages, 10 figures. v2: added references. To appear in PRD
dc.identifierhttps://arxiv.org/abs/0801.3656
dc.identifierhttp://arxiv.org/abs/0801.3656
dc.identifierPhys.Rev.D77:065026,2008
dc.identifierdoi:10.1103/PhysRevD.77.065026
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205261
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleHadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter
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