Sterile Neutrino Search in the Neutrino-4 Experiment at the SM-3 Reactor
First results on the energy spectrum and flux of reactor antineutrinos as a function of the distance L from the reactor core, measured in the Neutrino-4 experiment for 6 < L < 12 m, are presented. The flux L ‑dependence fits to the 1/ L 2 form with a statistical significance of ~10% correspond...
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| Veröffentlicht in: | Physics of particles and nuclei 2018-07, Vol.49 (4), p.701-708 |
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| creator | Serebrov, A. P. Ivochkin, V. G. Samoilov, R. M. Fomin, A. K. Polyushkin, A. O. Zinoviev, V. G. Neustroev, P. V. Golovtsov, V. L. Chernyj, A. V. Zherebtsov, O. M. Chaikovskii, M. E. Martemyanov, V. P. Tarasenkov, V. G. Aleshin, V. I. Petelin, A. L. Izhutov, A. L. Tuzov, A. A. Sazontov, S. A. Gromov, M. O. Afanasiev, V. V. Zaytsev, M. E. Ryazanov, D. K. |
| description | First results on the energy spectrum and flux of reactor antineutrinos as a function of the distance
L
from the reactor core, measured in the Neutrino-4 experiment for 6 <
L
< 12 m, are presented. The flux
L
‑dependence fits to the 1/
L
2
form with a statistical significance of ~10% corresponding to 1.64σ, so that the measured spectrum deviates from the 1/
L
2
law at a confidence level ~90%. The measured energy spectrum deviates from the predicted one at a similar confidence level ~90%. That both deviations are best described with oscillation parameters in the same regions of
eV
2
and
boosts the overall confidence level to ~95% (2σ). These results suggest that antineutrinos oscillate to a sterile state, but still fall short of reliably establishing the oscillation phenomenon. At present, the possibility of mimicking the oscillation effect by systematic errors cannot be completely excluded. |
| doi_str_mv | 10.1134/S1063779618040482 |
| format | Article |
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L
from the reactor core, measured in the Neutrino-4 experiment for 6 <
L
< 12 m, are presented. The flux
L
‑dependence fits to the 1/
L
2
form with a statistical significance of ~10% corresponding to 1.64σ, so that the measured spectrum deviates from the 1/
L
2
law at a confidence level ~90%. The measured energy spectrum deviates from the predicted one at a similar confidence level ~90%. That both deviations are best described with oscillation parameters in the same regions of
eV
2
and
boosts the overall confidence level to ~95% (2σ). These results suggest that antineutrinos oscillate to a sterile state, but still fall short of reliably establishing the oscillation phenomenon. At present, the possibility of mimicking the oscillation effect by systematic errors cannot be completely excluded.</description><identifier>ISSN: 1063-7796</identifier><identifier>EISSN: 1531-8559</identifier><identifier>DOI: 10.1134/S1063779618040482</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>ANTINEUTRINOS ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; ENERGY SPECTRA ; OSCILLATIONS ; Particle and Nuclear Physics ; Physics ; Physics and Astronomy ; REACTOR CORES ; STERILE NEUTRINOS</subject><ispartof>Physics of particles and nuclei, 2018-07, Vol.49 (4), p.701-708</ispartof><rights>Pleiades Publishing, Ltd. 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-72be91949175add1e3918301a4518ff8e6832d8b8b63714482e0029c232da0233</citedby><cites>FETCH-LOGICAL-c316t-72be91949175add1e3918301a4518ff8e6832d8b8b63714482e0029c232da0233</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1063779618040482$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1063779618040482$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>230,314,780,784,885,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/22981786$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Serebrov, A. P.</creatorcontrib><creatorcontrib>Ivochkin, V. G.</creatorcontrib><creatorcontrib>Samoilov, R. M.</creatorcontrib><creatorcontrib>Fomin, A. K.</creatorcontrib><creatorcontrib>Polyushkin, A. O.</creatorcontrib><creatorcontrib>Zinoviev, V. G.</creatorcontrib><creatorcontrib>Neustroev, P. V.</creatorcontrib><creatorcontrib>Golovtsov, V. L.</creatorcontrib><creatorcontrib>Chernyj, A. V.</creatorcontrib><creatorcontrib>Zherebtsov, O. M.</creatorcontrib><creatorcontrib>Chaikovskii, M. E.</creatorcontrib><creatorcontrib>Martemyanov, V. P.</creatorcontrib><creatorcontrib>Tarasenkov, V. G.</creatorcontrib><creatorcontrib>Aleshin, V. I.</creatorcontrib><creatorcontrib>Petelin, A. L.</creatorcontrib><creatorcontrib>Izhutov, A. L.</creatorcontrib><creatorcontrib>Tuzov, A. A.</creatorcontrib><creatorcontrib>Sazontov, S. A.</creatorcontrib><creatorcontrib>Gromov, M. O.</creatorcontrib><creatorcontrib>Afanasiev, V. V.</creatorcontrib><creatorcontrib>Zaytsev, M. E.</creatorcontrib><creatorcontrib>Ryazanov, D. K.</creatorcontrib><title>Sterile Neutrino Search in the Neutrino-4 Experiment at the SM-3 Reactor</title><title>Physics of particles and nuclei</title><addtitle>Phys. Part. Nuclei</addtitle><description>First results on the energy spectrum and flux of reactor antineutrinos as a function of the distance
L
from the reactor core, measured in the Neutrino-4 experiment for 6 <
L
< 12 m, are presented. The flux
L
‑dependence fits to the 1/
L
2
form with a statistical significance of ~10% corresponding to 1.64σ, so that the measured spectrum deviates from the 1/
L
2
law at a confidence level ~90%. The measured energy spectrum deviates from the predicted one at a similar confidence level ~90%. That both deviations are best described with oscillation parameters in the same regions of
eV
2
and
boosts the overall confidence level to ~95% (2σ). These results suggest that antineutrinos oscillate to a sterile state, but still fall short of reliably establishing the oscillation phenomenon. At present, the possibility of mimicking the oscillation effect by systematic errors cannot be completely excluded.</description><subject>ANTINEUTRINOS</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>ENERGY SPECTRA</subject><subject>OSCILLATIONS</subject><subject>Particle and Nuclear Physics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>REACTOR CORES</subject><subject>STERILE NEUTRINOS</subject><issn>1063-7796</issn><issn>1531-8559</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9UE1LAzEQDaJgrf4AbwHP0UyS3U2OUqoVqoKr55Cms3ZLzUqSgv57Uyt4EDzN8D6GeY-Qc-CXAFJdtcBr2TSmBs0VV1ockBFUEpiuKnNY9kKzHX9MTlJacw4AlR6RWZsx9hukD7jNsQ8DbdFFv6J9oHn1CzNFpx_vRfqGIVOXv8n2nkn6hM7nIZ6So85tEp79zDF5uZk-T2Zs_nh7N7meMy-hzqwRCzRglIGmcssloDSgJQenKtBdp7HWUiz1Qi9KHFAlCHIujBcFdVxIOSYX-7tDyr1Nvs_oV34IAX22QhgNja6LCvYqH4eUInb2vbzu4qcFbneF2T-FFY_Ye1LRhleMdj1sYyhh_jF9AVCYaaw</recordid><startdate>20180701</startdate><enddate>20180701</enddate><creator>Serebrov, A. 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P. ; Ivochkin, V. G. ; Samoilov, R. M. ; Fomin, A. K. ; Polyushkin, A. O. ; Zinoviev, V. G. ; Neustroev, P. V. ; Golovtsov, V. L. ; Chernyj, A. V. ; Zherebtsov, O. M. ; Chaikovskii, M. E. ; Martemyanov, V. P. ; Tarasenkov, V. G. ; Aleshin, V. I. ; Petelin, A. L. ; Izhutov, A. L. ; Tuzov, A. A. ; Sazontov, S. A. ; Gromov, M. O. ; Afanasiev, V. V. ; Zaytsev, M. E. ; Ryazanov, D. 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Nuclei</stitle><date>2018-07-01</date><risdate>2018</risdate><volume>49</volume><issue>4</issue><spage>701</spage><epage>708</epage><pages>701-708</pages><issn>1063-7796</issn><eissn>1531-8559</eissn><abstract>First results on the energy spectrum and flux of reactor antineutrinos as a function of the distance
L
from the reactor core, measured in the Neutrino-4 experiment for 6 <
L
< 12 m, are presented. The flux
L
‑dependence fits to the 1/
L
2
form with a statistical significance of ~10% corresponding to 1.64σ, so that the measured spectrum deviates from the 1/
L
2
law at a confidence level ~90%. The measured energy spectrum deviates from the predicted one at a similar confidence level ~90%. That both deviations are best described with oscillation parameters in the same regions of
eV
2
and
boosts the overall confidence level to ~95% (2σ). These results suggest that antineutrinos oscillate to a sterile state, but still fall short of reliably establishing the oscillation phenomenon. At present, the possibility of mimicking the oscillation effect by systematic errors cannot be completely excluded.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1063779618040482</doi><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1063-7796 |
| ispartof | Physics of particles and nuclei, 2018-07, Vol.49 (4), p.701-708 |
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| recordid | cdi_osti_scitechconnect_22981786 |
| source | SpringerLink Journals - AutoHoldings |
| subjects | ANTINEUTRINOS ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ENERGY SPECTRA OSCILLATIONS Particle and Nuclear Physics Physics Physics and Astronomy REACTOR CORES STERILE NEUTRINOS |
| title | Sterile Neutrino Search in the Neutrino-4 Experiment at the SM-3 Reactor |
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