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dc.contributor.authorO’Hare, Ciaran A. J.
dc.contributor.authorGreen, Anne M.
dc.contributor.authorBillard, Julien
dc.contributor.authorFigueroa-Feliciano, Enectali
dc.contributor.authorStrigari, Louis E.
dc.date.accessioned2015-09-18T13:39:11Z
dc.date.available2015-09-18T13:39:11Z
dc.date.issued2015-09
dc.date.submitted2015-06
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.urihttp://hdl.handle.net/1721.1/98827
dc.description.abstractThe search for weakly interacting massive particles (WIMPs) by direct detection faces an encroaching background due to coherent neutrino-nucleus scattering. As the sensitivity of these experiments improves, the question of how to best distinguish a dark matter signal from neutrinos will become increasingly important. A proposed method of overcoming this so-called “neutrino floor” is to utilize the directional signature that both neutrino- and dark-matter-induced recoils possess. We show that directional experiments can indeed probe WIMP-nucleon cross sections below the neutrino floor with little loss in sensitivity due to the neutrino background. In particular we find at low WIMP masses (around 6 GeV) the discovery limits for directional detectors penetrate below the nondirectional limit by several orders of magnitude. For high WIMP masses (around 100 GeV), the nondirectional limit is overcome by a factor of a few. Furthermore we show that even for directional detectors which can only measure one- or two-dimensional projections of the three-dimensional recoil track, the discovery potential is only reduced by a factor of 3 at most. We also demonstrate that while the experimental limitations of directional detectors, such as sense recognition and finite angular resolution, have a detrimental effect on the discovery limits, it is still possible to overcome the ultimate neutrino background faced by nondirectional detectors.en_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevD.92.063518en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Physical Societyen_US
dc.titleReadout strategies for directional dark matter detection beyond the neutrino backgrounden_US
dc.typeArticleen_US
dc.identifier.citationO’Hare, Ciaran A. J., Anne M. Green, Julien Billard, Enectali Figueroa-Feliciano, and Louis E. Strigari. "Readout strategies for directional dark matter detection beyond the neutrino background." Phys. Rev. D 92, 063518 (September 2015). © 2015 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorFigueroa-Feliciano, Enectalien_US
dc.relation.journalPhysical Review Den_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2015-09-17T22:00:10Z
dc.language.rfc3066en
dc.rights.holderAmerican Physical Society
dspace.orderedauthorsO’Hare, Ciaran A. J.; Green, Anne M.; Billard, Julien; Figueroa-Feliciano, Enectali; Strigari, Louis E.en_US
dc.identifier.orcidhttps://orcid.org/0000-0001-9285-5556
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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