6533b827fe1ef96bd128713d

RESEARCH PRODUCT

Direct evidence for neutrino flavor transformation from neutral-current interactions in the Sudbury Neutrino Observatory

D. S. McdonaldE. D. EarleE. D. EarleJ. A. DunmoreR. U. HaqChristopher C. M. KybaM. C.p. IsaacV. M. NovikovT. J. BowlesG. JonkmansG. JonkmansE. SaettlerH. FerganiJ. R. WilsonG. DoucasE. D. HallmanM. H. SchwendenerE. BonvinR. HazamaHerbert H. ChenA. B. KnoxN. MccauleyN. MccauleyP. J. DoeP. J. DoeP. J. DoeJ. LawP. JagamN. W. TannerC. J. SimsJ. V. GermaniA. RobergeH. HeronA. L. HallinR. Van BergC. MifflinJ. B. WilhelmyP. T. TrentH. W. LeeJoseph A. FormaggioM. R. DragowskyM. R. DragowskyM. M. FowlerS. D. BillerJ. HewettT. V. BullardAndrew HimeT. D. SteigerR. K. TaplinM. C. BrowneM. C. BrowneMinfang YehM. L. ChenR. L. HahnSalvador GilK. KazkazA. A. HamianJ. FarineJ. FarineG. T. EwanK. K. SchafferN. A. JelleyN. WestE. W. BeierHal EvansS. S.e. RosendahlE. T.h. CliffordF.m. NewcomerM. LayR. A. BlackF. A. DuncanJ. D. AnglinP. J. HarveyYuen-dat ChanS. J. BriceS. J. BriceK. GrahamD. F. CowenC. E. OkadaJ. D. HepburnR. G. H. RobertsonR. G. H. RobertsonT. C. AndersenSteven ElliottSteven ElliottJ. J. SimpsonPeter WittichDavid A. SinclairDavid A. SinclairE.d. FrankA. S. HamerA. S. HamerS. M. OserR. G. StokstadL. C. StonehillJ. ManeiraR. G. Van De WaterR. G. Van De WaterI. LevineN. StarinskyP. M. ThornewellT. J. RadcliffeK. FrameS. MajerusJ. H.m. CowanT. SpreitzerD. L. WarkD. L. WarkD. L. WarkJ. CameronW. J. HeintzelmanChris WalthamC. J. VirtueM. O'neillM. MoorheadR. J. KomarR. C. AllenK. T. LeskoM.g. BoulayM.g. BoulayJoshua R. KleinK. McfarlaneN. GagnonK. M. HeegerI. T. LawsonW. FratiJohn L. OrrellJ. M. WoutersBhaskar SurBhaskar SurB. C. RobertsonF. Dalnoki-veressH. B. MakRichard T. KouzesQ. R. AhmadA. P. FerrarisR. J. BoardmanA. D. MarinoAnett SchulkeJ. BiguM. BercovitchJ. X. WangP. T. KeenerT. KutterR. Meijer DreesG. A. CoxV. L. RusuA. B. McdonaldA. B. McdonaldR. S. StoreyG. McgregorM. A. HoweR. W. OllerheadA. J. NobleA. J. NobleH. SeifertH. SeifertH. SeifertJ. ManorY. I. TserkovnyakJ. LyonEric B. NormanJ. HeiseJ. HeiseC. K. HargroveS. LuomaM. ThormanN. TaggN. TaggJ. F. WilkersonJ. F. WilkersonReda TafiroutDarren GrantB. A. MoffatJ. G. HykawyW. F. DavidsonJ. C. BartonR. L. HelmerR. L. HelmerI. BlevisM. OmoriMonica DunfordA. W. P. PoonR. J. FordXin ChenXin ChenP. SkensvedG. MiltonX. DaiH. S. NgMark NeubauerM. G. BowlerW. LockeJ. R. LeslieJ. BogerB. T. ClevelandW. B. HandlerM. ShatkayM. W.e. SmithAlan R. SmithC. W. NallyG. BühlerC. JillingsJ. K. RowleyC. A. DubaG. G. Miller

subject

Particle physicsPhysics::Instrumentation and DetectorsSolar neutrinoAstrophysics::High Energy Astrophysical PhenomenaGeneral Physics and AstronomyFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciences7. Clean energyHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)Tau neutrino0103 physical sciencesNuclear Experiment (nucl-ex)010306 general physicsNeutrino oscillationNuclear ExperimentNuclear ExperimentPhysicsSudbury Neutrino Observatory010308 nuclear & particles physicsHigh Energy Physics::PhenomenologySolar neutrino problemNeutrino detectorHigh Energy Physics::ExperimentAstrophysics::Earth and Planetary AstrophysicsNeutrinoLepton

description

Observations of neutral current neutrino interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using the neutral current, elastic scattering, and charged current reactions and assuming the standard 8B shape, the electron-neutrino component of the 8B solar flux is 1.76 +/-0.05(stat.)+/-0.09(syst.) x10^6/(cm^2 s), for a kinetic energy threshold of 5 MeV. The non-electron neutrino component is 3.41+/-0.45(stat.)+0.48,-0.45(syst.) x10^6/(cm^2 s), 5.3 standard deviations greater than zero, providing strong evidence for solar electron neutrino flavor transformation. The total flux measured with the NC reaction is 5.09 +0.44,-0.43(stat.)+0.46,-0.43(syst.)x10^6/(cm^2 s), consistent with solar models.

yearjournalcountryeditionlanguage
2002-01-01
https://hal.archives-ouvertes.fr/hal-00451452