dc.contributor.author | O’Hare, Ciaran A. J. | |
dc.contributor.author | Green, Anne M. | |
dc.contributor.author | Billard, Julien | |
dc.contributor.author | Figueroa-Feliciano, Enectali | |
dc.contributor.author | Strigari, Louis E. | |
dc.date.accessioned | 2015-09-18T13:39:11Z | |
dc.date.available | 2015-09-18T13:39:11Z | |
dc.date.issued | 2015-09 | |
dc.date.submitted | 2015-06 | |
dc.identifier.issn | 1550-7998 | |
dc.identifier.issn | 1550-2368 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/98827 | |
dc.description.abstract | The 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.publisher | American Physical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevD.92.063518 | en_US |
dc.rights | Article 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.source | American Physical Society | en_US |
dc.title | Readout strategies for directional dark matter detection beyond the neutrino background | en_US |
dc.type | Article | en_US |
dc.identifier.citation | O’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 Society | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Physics | en_US |
dc.contributor.mitauthor | Figueroa-Feliciano, Enectali | en_US |
dc.relation.journal | Physical Review D | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dc.date.updated | 2015-09-17T22:00:10Z | |
dc.language.rfc3066 | en | |
dc.rights.holder | American Physical Society | |
dspace.orderedauthors | O’Hare, Ciaran A. J.; Green, Anne M.; Billard, Julien; Figueroa-Feliciano, Enectali; Strigari, Louis E. | en_US |
dc.identifier.orcid | https://orcid.org/0000-0001-9285-5556 | |
mit.license | PUBLISHER_POLICY | en_US |
mit.metadata.status | Complete | |