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Improved measurement of B-8 solar neutrinos with 1.5 kt . y of Borexino exposure

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dc.contributor.authorAgostini, M.
dc.contributor.authorAltenmuller, K.
dc.contributor.authorAppel, S.
dc.contributor.authorAtroshchenko, V.
dc.contributor.authorLitvinovich, E.
dc.contributor.authorMachulin, I.
dc.contributor.authorSkorokhvatov, M.
dc.contributor.authorЛитвинович, Евгений Александрович
dc.contributor.authorМачулин, Игорь Николаевич
dc.contributor.authorСкорохватов, Михаил Дмитриевич
dc.date.accessioned2024-11-25T17:04:48Z
dc.date.available2024-11-25T17:04:48Z
dc.date.issued2020
dc.description.abstractWe report on an improved measurement of the B-8 solar neutrino interaction rate with the Borexino experiment at the Laboratori Nazionali del Gran Sasso. Neutrinos are detected via their elastic scattering on electrons in a large volume of liquid scintillator. The measured rate of scattered electrons above 3 MeV of energy is 0.223(-0.016)(+0.015) (stat) (+0.006)(-0.006) (syst) cpd/100 t, which corresponds to an observed solar neutrino flux assuming no neutrino flavor conversion of Phi(ES)(8B) = 2.57(-0.18)(+0.17) (stat) (+0.07)(-0.07) (syst) x 10(6) cm(-2) s(-1). This measurement exploits the active volume of the detector in almost its entirety for the first time, and takes advantage of a reduced radioactive background following the 2011 scintillator purification campaign and of novel analysis tools providing a more precise modeling of the background. Additionally, we set a new limit on the interaction rate of solar hep neutrinos, searched via their elastic scattering on electrons as well as their neutral current-mediated inelastic scattering on carbon, C-12(nu, nu')C-12* (E-gamma = 15.1 MeV).
dc.identifier.citationImproved measurement of B-8 solar neutrinos with 1.5 kt . y of Borexino exposure / Agostini, M [et al.] // Physical Review D. - 2020. - 101. - № 6. - 10.1103/PhysRevD.101.062001
dc.identifier.doi10.1103/PhysRevD.101.062001
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevD.101.062001
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85083516243&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000518459600001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/20412
dc.relation.ispartofPhysical Review D
dc.titleImproved measurement of B-8 solar neutrinos with 1.5 kt . y of Borexino exposure
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue6
oaire.citation.volume101
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