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CP-Violating Effects in Neutralino Scattering and Annihilation

dc.contributor.authorGondolo, Paoloen_US
dc.contributor.authorFreese, Katherineen_US
dc.date.accessioned2006-12-19T19:16:35Z
dc.date.available2006-12-19T19:16:35Z
dc.date.issued2002-07-01en_US
dc.identifier.citationGondolo, Paolo; Freese, Katherine (2002). "CP-Violating Effects in Neutralino Scattering and Annihilation." Journal of High Energy Physics. 07(052). <http://hdl.handle.net/2027.42/49125>en_US
dc.identifier.issn1126-6708en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/49125
dc.description.abstractCP-violating effects that mix the CP-even and CP-odd Higgs bosons can have important consequences for annihilation and scattering of supersymmetric neutralino dark matter. Specifically, we study the dependence on the phase of the third generation trilinear couplings At and Ab. We find enhancements in the neutralino annihilation scattering rate which are typically factors of one to four; in the narrow regime of parameter space with neutralino mass close to half the Higgs mass, we find new (CP violating) resonances which may increase the annihilation cross section by factors up to 106. CP-violating effects can also modify the neutralino scattering rate off nucleons. For cross sections accessible to upcoming experiments, the rate can be enhanced by a factor as large as 2 or suppressed by a factor of up to 3; for lower cross sections, the suppression can be as large as seven orders of magnitude. We find cases in the region being probed by dark matter searches which are experimentally or cosmologically excluded when CP is conserved but are allowed when CP is violated. These effects are important for direct and indirect detection of neutralino dark matter in cryogenic detectors, the Earth, the Sun, the galactic halo and the galactic center.en_US
dc.format.extent3118 bytes
dc.format.extent792376 bytes
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherIOP Publishing Ltden_US
dc.titleCP-Violating Effects in Neutralino Scattering and Annihilationen_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelPhysicsen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumPhysics Department, University of Michigan, Ann Arbor, MI 48109, USAen_US
dc.contributor.affiliationotherMax Planck Institut für Physik, Föhringer Ring 6, 80805 Munich, Germanyen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/49125/2/jhep072002052.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1088/1126-6708/2002/07/052en_US
dc.identifier.sourceJournal of High Energy Physics.en_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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