6533b821fe1ef96bd127b053
RESEARCH PRODUCT
Perspectives for CNO neutrino detection in Borexino
V. AtroshchenkoD. A. SemenovY. SuvorovÖ. PenekÖ. PenekLothar OberauerN. PilipenkoMatthias LaubensteinD. BravoC. GhianoM. M. WojcikD. BasilicoAndrey FormozovAndrey FormozovM. RedchukM. RedchukV. N. MuratovaG. TesteraJ. ThurnM. D. SkorokhvatovM. D. SkorokhvatovMichael WurmO. ZaimidorogaJ. MartynE. LitvinovichE. LitvinovichD. FrancoF. Von FeilitzschA. RazetoN. RossiL. LukyanchenkoJay Burton BenzigerL. Di NotoCristiano GalbiatiM. MisiaszekV. OrekhovV. V. KobychevMatteo AgostiniI. N. MachulinI. N. MachulinG. BonfiniS. DaviniFrank CalapriceM. CarliniD. D'angeloS. KumaranS. KumaranA. PorcelliXuefeng DingG. LukyanchenkoE. MeroniA. JanyM. GromovS. AppelG. BelliniA. PocarR. B. VogelaarB. NeumairM. MeyerT. HoudyK. FomenkoL. PappM. GschwenderFausto OrticaG. RaikovR. TartagliaGioacchino RanucciD. GuffantiI. S. DrachnevO. SmirnovB. CaccianigaLivia LudhovaLivia LudhovaS. CaprioliG. ZuzelK. ChoiE. V. HungerfordA. M. GorettiA. S. ChepurnovTobias LachenmaierMarco GiammarchiPaolo LombardiLino MiramontiA. SotnikovAldo IanniAldo RomaniA. Di LudovicoP. CavalcanteF. CavannaG. ManuzioA. V. DerbinS. WeinzAlessandra ReE. V. UnzhakovL.f.f. StokesKai ZuberD. JeschkeL. PietrofacciaJ. MaricicA. VishnevaG. KorgaZ. BagdasarianAndrea IanniSandra ZavatarelliS. RottenangerLuigi CappelliS. SchönertK. AltenmüllerM. NieslonyS. MarcocciL. CollicaA. CaminataMarco PallaviciniF. Gabrielesubject
CNO cycleexperimental methodsneutrino: solarPhysics::Instrumentation and DetectorsSolar neutrinoAstrophysics::High Energy Astrophysical Phenomenascintillation counter: liquidSolar neutrinosbismuth: admixtureAstrophysics[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]7. Clean energySolar neutrinoCNO-cycleneutrino: fluxAstrophysics::Solar and Stellar Astrophysics[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]Stellar evolutionBorexinoliquid scintillatorAstrophysics::Galaxy AstrophysicsPhysicsEnergy distributiondetectorbackgroundbismuth: nuclideCNO cycleNeutrino detector13. Climate actionBorexinoExperimental methodsNeutrinodescription
International audience; Borexino measured with unprecedented accuracy the fluxes of solar neutrinos emitted at all the steps of the pp fusion chain. Still missing is the measurement of the flux of neutrinos produced in the CNO cycle. A positive measurement of the CNO neutrino flux is of fundamental importance for understanding the evolution of stars and addressing the unresolved controversy on the solar abundances. The measurement of the CNO neutrino flux in Borexino is challenging because of the low intensity of this component (CNO cycle accounts for about 1% of the energy emitted by Sun), the lack of prominent spectral features and the presence of background sources. The main background component is 210Bi decaying in the liquid scintillator of Borexino that creates events with an energy distribution very close to the one of CNO neutrino interactions. Since 2015 the collaboration undertook significant efforts to achieve an independent measurement of the background affecting a CNO measurement, whose impact on the sensitivity to a CNO signal will be discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-06-11 |