Direct evidence for neutrino flavor transformation from neutral-current interactions in the Sudbury Neutrino Observatory -: art. no. 011301

被引：2517

作者：

Ahmad, QR ^{[1
]}

Allen, RC

Andersen, TC

Anglin, JD

Barton, JC

Beier, EW

Bercovitch, M

Bigu, J

Biller, SD

Black, RA

Blevis, I

Boardman, RJ

Boger, J

Bonvin, E

Boulay, MG

Bowler, MG

Bowles, TJ

Brice, SJ

Browne, MC

Bullard, TV

Bühler, G

Cameron, J

Chan, YD

Chen, HH

Chen, M

Chen, X

Cleveland, BT

Clifford, ETH

Cowan, JHM

Cowen, DF

Cox, GA

Dai, X

Dalnoki-Veress, F

Davidson, WF

Doe, PJ

Doucas, G

Dragowsky, MR

Duba, CA

Duncan, FA

Dunford, M

Dunmore, JA

Earle, ED

Elliott, SR

Evans, HC

Ewan, GT

Farine, J

Fergani, H

Ferraris, AP

Ford, RJ

Formaggio, JA

机构：

[1] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA

[2] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[3] Univ London Birkbeck Coll, London WC1E 7HX, England

[4] Atom Energy Canada Ltd, Chalk River Labs, Chalk River, ON K0J 1J0, Canada

[5] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[6] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

[7] Univ Calif Irvine, Dept Phys, Irvine, CA 92717 USA

[8] Carleton Univ, Ottawa, ON K1S 5B6, Canada

[9] Univ Guelph, Dept Phys, Guelph, ON N1G 2W1, Canada

[10] Laurentian Univ, Dept Phys & Astron, Sudbury, ON P3E 2C6, Canada

[11] Univ Calif Berkeley, Lawrence Berkeley Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA

[12] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA

[13] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[14] Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada

[15] Univ Oxford, Dept Phys, Oxford OX1 3RH, England

[16] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[17] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[18] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

[19] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[20] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

[21] TRIUMF, Vancouver, BC V6T 2A3, Canada

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.89.011301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Observations of neutral-current nu interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using the neutral current (NC), elastic scattering, and charged current reactions and assuming the standard B-8 shape, the nu(e) component of the B-8 solar flux is phi(e)=1.76(-0.05)(+0.05)( stat)(+0.09)(-0.09)( syst)x10(6) cm(-2) s(-1) for a kinetic energy threshold of 5 MeV. The non-nu(e) component is phi(mutau)=3.41(+0.45) (-0.45)(stat)(+0.48) (-0.45)(syst)x10(6) cm(-2) s(-1) , 5.3sigma greater than zero, providing strong evidence for solar nu(e) flavor transformation. The total flux measured with the NC reaction is phi(NC)=5.09(-0.43)(+0.44) (stat)(+0.46)(-0.43) (syst)x10(6) cm (-2) s (-1) , consistent with solar models.

引用

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