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- Enriched_Xenon_Observatory abstract "The Enriched Xenon Observatory (EXO) is a particle physics experiment searching for neutrinoless double beta decay of xenon-136. The experiment uses a large amount of xenon, isotopically enriched in xenon-136. This isotope undergoes ordinary double beta decay (with the emission of two neutrinos) to barium-136.If neutrinoless double beta decay is detected for the first time, it will be proof of the Majorana nature of neutrinos. EXO intends to measure the effective Majorana neutrino mass (if it exists) with a sensitivity close to 0.01 eV. The actual measurement will be the rate of events, which is equivalent to a measurement of the half-life. Currently only lower limits exist for the neutrinoless double beta decay modes of xenon-136, but the two neutrino decay has been observed, with a halflife of 2.11 ± 0.04 (stat.) ± 0.21 (sys.) × 1021 years. Observation of the 2-neutrino mode does not provide information about neutrinos, though it is interesting for nuclear theory. Measurement of the half-life of the neutrinoless mode can be converted to an effective neutrino mass using calculated nuclear matrix elements. If the neutrinoless mode is not seen, a lower limit can be placed on the half-life, which corresponds to an upper limit on the neutrino mass. If a limit on the effective neutrino mass is placed ≤ 0.01 eV, it answers the question of the ordering of neutrino masses. While the differences between neutrino masses are known, it is not known which neutrino is the heaviest. The effective neutrino mass is dependent on the lightest neutrino mass in such a way that a limit ≤ 0.01 eV indicates the neutrino masses lie in the normal hierarchy.EXO currently consists of two facets: a 200-kilogram liquid time projection chamber dubbed "EXO-200" and R&D efforts into a ton-scale xenon experiment. While EXO-200 serves as a testing ground for liquid xenon techniques, the ton-scale experiment may take a different form.".
- Enriched_Xenon_Observatory wikiPageExternalLink exo.
- Enriched_Xenon_Observatory wikiPageID "7215216".
- Enriched_Xenon_Observatory wikiPageRevisionID "603157339".
- Enriched_Xenon_Observatory hasPhotoCollection Enriched_Xenon_Observatory.
- Enriched_Xenon_Observatory subject Category:Neutrino_experiments.
- Enriched_Xenon_Observatory subject Category:Particle_experiments.
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- Enriched_Xenon_Observatory type Abstraction100002137.
- Enriched_Xenon_Observatory type Act100030358.
- Enriched_Xenon_Observatory type Activity100407535.
- Enriched_Xenon_Observatory type Event100029378.
- Enriched_Xenon_Observatory type Experiment100639556.
- Enriched_Xenon_Observatory type Investigation100633864.
- Enriched_Xenon_Observatory type NeutrinoExperiments.
- Enriched_Xenon_Observatory type ParticleExperiments.
- Enriched_Xenon_Observatory type PsychologicalFeature100023100.
- Enriched_Xenon_Observatory type Research100636921.
- Enriched_Xenon_Observatory type ScientificResearch100641820.
- Enriched_Xenon_Observatory type Work100575741.
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- Enriched_Xenon_Observatory type SpatialThing.
- Enriched_Xenon_Observatory comment "The Enriched Xenon Observatory (EXO) is a particle physics experiment searching for neutrinoless double beta decay of xenon-136. The experiment uses a large amount of xenon, isotopically enriched in xenon-136. This isotope undergoes ordinary double beta decay (with the emission of two neutrinos) to barium-136.If neutrinoless double beta decay is detected for the first time, it will be proof of the Majorana nature of neutrinos.".
- Enriched_Xenon_Observatory label "Enriched Xenon Observatory".
- Enriched_Xenon_Observatory sameAs m.025wcn8.
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- Enriched_Xenon_Observatory wasDerivedFrom Enriched_Xenon_Observatory?oldid=603157339.
- Enriched_Xenon_Observatory isPrimaryTopicOf Enriched_Xenon_Observatory.