Measurement of Reactor Antineutrino Oscillation at SNO

M Abreu^{1

2}, V Albanese^{3

4}, A Allega³, R Alves⁵, M R Anderson³, S Andringa¹, L Anselmo⁶, J Antunes^{1

2}, E Arushanova⁷, S Asahi³, M Askins^{8

9

10}, D M Asner^{6

11}, D J Auty¹², A R Back^{7

13}, S Back^{3

6}, A Bacon¹⁴, T Baltazar^{1

2}, F Barão^{1

2}, Z Barnard⁴, A Barr⁶, N Barros^{1

14

15

16

17}, D Bartlett³, R Bayes^{3

4}, C Beaudoin^{3

4}, E W Beier¹⁴, G Berardi^{3

6}, T S Bezerra¹³, A Bialek^{3

4

6

12}, S D Biller¹⁸, E Blucher¹⁹, A Boeltzig¹⁷, R Bonventre^{8

9

14}, M Boulay³, D Braid⁴, E Caden^{3

4

6}, E J Callaghan^{8

9

14}, J Caravaca^{8

9}, J Carvalho^{5

16}, L Cavalli¹⁸, D Chauhan^{1

3

4

6}, M Chen³, S Cheng³, O Chkvorets⁴, K J Clark^{3

13

18}, B Cleveland^{4

6}, C Connors⁴, D Cookman^{18

20}, J Corning³, I T Coulter^{14

18}, M A Cox^{1

21}, D Cressy⁴, X Dai³, C Darrach⁴, S DeGraw¹⁸, R Dehghani³, J Deloye⁴, M M Depatie^{3

4}, F Descamps^{8

9}, C Dima¹³, J Dittmer¹⁷, K H Dixon²⁰, F Di Lodovico^{7

20}, A Doxtator⁶, N Duhaime⁴, F Duncan^{4

6}, J Dunger^{7

18}, A D Earle¹³, M S Esmaeilian¹², D Fabris^{3

6}, E Falk¹³, A Farrugia⁴, N Fatemighomi^{3

6}, C Felber⁴, V Fischer¹⁰, E Fletcher³, R Ford^{4

6}, K Frankiewicz²², N Gagnon⁶, A Gaur¹², J Gauthier^{3

6}, A Gibson-Foster¹³, K Gilje¹², O I González-Reina²³, D Gooding²², P Gorel¹², K Graham³, C Grant^{10

22}, J Grove^{3

4}, S Grullon¹⁴, E Guillian³, R L Hahn¹¹, S Hall⁶, A L Hallin¹², D Hallman⁴, S Hans¹¹, J Hartnell¹³, P Harvey³, C Hearns³, M R Hebert^{8

9}, M Hedayatipour¹², W J Heintzelman¹⁴, J Heise³, R L Helmer²⁴, C Hewitt¹⁸, B Hodak³, M Hodak^{3

6}, M Hood⁶, D Horne³, M Howe²⁵, B Hreljac^{3

4}, J Hu¹², P Huang¹⁸, R Hunt-Stokes¹⁸, T Iida³, A S Inácio^{1

18

26}, C M Jackson^{8

9}, N A Jelley¹⁸, C J Jillings^{4

6}, C Jones¹⁸, P G Jones^{7

18}, S Kaluzienski³, K Kamdin^{8

9}, T Kaptanoglu^{8

9

14}, J Kaspar²⁷, K Keeter²⁸, C Kefelian^{8

9}, P Khaghani⁴, L Kippenbrock²⁷, J Kladnik¹, J R Klein¹⁴, R Knapik^{14

29}, J Kofron²⁷, L L Kormos³⁰, S Korte⁴, B Krar³, C Kraus^{3

6}, C B Krauss¹², T Kroupová^{14

18}, K Labe¹⁹, F Lafleur⁶, C Lake⁴, I Lam³, C Lan³, B J Land^{8

9

14}, R Lane⁷, S Langrock⁷, P Larochelle^{3

6}, S Larose⁶, A LaTorre¹⁹, I Lawson^{4

6}, L Lebanowski^{8

9

14}, J Lee³, C Lefebvre³, G M Lefeuvre¹³, E J Leming^{13

18}, A Li²², O Li⁶, J Lidgard¹⁸, B Liggins⁷, P Liimatainen⁶, Y H Lin^{3

4

6}, X Liu³, Y Liu³, V Lozza^{1

17

26}, M Luo¹⁴, S Maguire^{4

6

11}, A Maio^{1

26}, K Majumdar¹⁸, S Manecki^{3

6}, J Maneira^{1

26}, R D Martin³, E Marzec¹⁴, A Mastbaum^{14

19}, A Mathewson⁶, N McCauley²¹, A B McDonald³, K McFarlane⁶, P Mekarski¹², M Meyer¹⁷, C Miller³, C Mills¹³, G Milton¹⁸, M Mlejnek¹³, E Mony³, B Morissette⁶, D Morris³, I Morton-Blake¹⁸, M J Mottram^{7

13}, M Mubasher¹², S Nae^{1

26}, S Naugle¹⁴, M Newcomer¹⁴, M Nirkko¹³, L J Nolan^{4

7}, V M Novikov³, H M O'Keeffe^{3

30}, E O'Sullivan³, G D Orebi Gann^{8

9

14}, S Ouyang^{31

32}, J Page^{3

13}, S Pal³, K Paleshi⁴, W Parker¹⁸, M J Parnell³⁰, J Paton¹⁸, S J M Peeters¹³, T Pershing¹⁰, Z Petriw¹², J Petzoldt¹⁷, L J Pickard^{8

9

10}, D Pracsovics⁴, G Prior¹, J C Prouty^{8

9}, B Quenallata^{15

16}, S Quirk³, P Ravi⁴, S Read⁶, A Reichold¹⁸, M Reinhard¹⁷, S Riccetto³, M Rigan¹³, I Ritchie⁶, A Robertson²¹, B C Robertson³, J Rose²¹, R Rosero¹¹, P M Rost⁴, J Rumleskie⁴, A Sörensen¹⁷, P Schrock¹⁷, M A Schumaker⁴, M H Schwendener⁴, D Scislowski²⁷, J Secrest^{14

33}, M Seddighin³, L Segui¹⁸, S Seibert¹⁴, I Semenec^{3

4}, F Shaker¹², T Shantz^{4

6}, M K Sharma³⁴, J Shen¹⁴, T M Shokair¹⁴, L Sibley¹², J Simms¹⁸, J R Sinclair¹³, K Singh¹², P Skensved³, M Smiley^{8

9}, T Sonley^{3

6}, M St-Amant⁶, R Stainforth²¹, S Stankiewicz⁶, M Strait¹⁹, M I Stringer^{7

13}, A Stripay^{3

6}, R Svoboda¹⁰, S Tacchino^{3

6}, R Tafirout²⁴, B Tam^{3

18}, C Tanguay⁴, J Tatar²⁷, L Tian³, N Tolich²⁷, J Tseng¹⁸, H W C Tseung²⁷, E Turner¹⁸, E Vázquez-Jáuregui^{4

6

23}, S Valder¹³, R Van Berg¹⁴, J G C Veinot³⁵, C J Virtue⁴, B von Krosigk¹⁷, J M G Walker²¹, M Walker³, J Wallig⁹, S C Walton⁴, F Wang^{31

32}, J Wang¹⁸, M Ward³, J Waterfield¹³, J J Weigand³⁶, R F White¹³, J F Wilkerson²⁵, J R Wilson^{7

20}, J D Wilson¹², T J Winchester²⁷, P Woosaree⁴, A Wright³, S Yang¹², K Yazigi¹², Z Ye¹⁴, M Yeh¹¹, S Yu^{3

4}, T Zhang¹⁰, Y Zhang^{12

31

32}, T Zhao³, K Zuber^{17

37}, A Zummo¹⁴; <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>SNO</mi><mo>+</mo><mtext>Collaboration</mtext></mrow></math>

Affiliations

¹ Laboratório de Instrumentação e Física Experimental de Partículas (LIP), Av. Prof. Gama Pinto, 2, 1649-003, Lisboa, Portugal.
² Universidade de Lisboa, Instituto Superior Técnico (IST), Departamento de Física, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
³ Queen's University, Department of Physics, Engineering Physics & Astronomy, Kingston, Ontario K7L 3N6, Canada.
⁴ Laurentian University, School of Natural Sciences, 935 Ramsey Lake Road, Sudbury, Ontario P3E 2C6, Canada.
⁵ Laboratório de Instrumentação e Física Experimental de Partículas (LIP), 3004-516, Coimbra, Portugal.
⁶ SNOLAB, Creighton Mine No. 9, 1039 Regional Road 24, Sudbury, Ontario P3Y 1N2, Canada.
⁷ Queen Mary, University of London, School of Physics and Astronomy, 327 Mile End Road, London, E1 4NS, United Kingdom.
⁸ University of California, Berkeley, Department of Physics, Berkeley, California 94720, USA.
⁹ Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720-8153, USA.
¹⁰ University of California, Davis, 1 Shields Avenue, Davis, California 95616, USA.
¹¹ Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973-500, USA.
¹² University of Alberta, Department of Physics, 4-181 CCIS, Edmonton, Alberta T6G 2E1, Canada.
¹³ University of Sussex, Physics and Astronomy, Pevensey II, Falmer, Brighton, BN1 9QH, United Kingdom.
¹⁴ University of Pennsylvania, Department of Physics and Astronomy, 209 South 33rd Street, Philadelphia, Pennsylvania 19104-6396, USA.
¹⁵ Laboratório de Instrumentação e Física Experimental de Partículas, Rua Larga, 3004-516 Coimbra, Portugal.
¹⁶ Universidade de Coimbra, Departamento de Física (FCTUC), 3004-516, Coimbra, Portugal.
¹⁷ Technische Universität Dresden, Institut für Kern und Teilchenphysik, Zellescher Weg 19, Dresden, 01069, Germany.
¹⁸ University of Oxford, The Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United Kingdom.
¹⁹ The Enrico Fermi Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637, USA.
²⁰ King's College London, Department of Physics, Strand Building, Strand, London, WC2R 2LS, United Kingdom.
²¹ University of Liverpool, Department of Physics, Liverpool, L69 3BX, United Kingdom.
²² Boston University, Department of Physics, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA.
²³ Universidad Nacional Autónoma de México (UNAM), Instituto de Física, Apartado Postal 20-364, México D.F., 01000, México.
²⁴ TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
²⁵ University of North Carolina, Department of Physics and Astronomy, Phillips Hall, Chapel Hill, North Carolina 27599-3255, USA.
²⁶ Universidade de Lisboa, Faculdade de Ciências (FCUL), Departamento de Física, Campo Grande, Edifício C8, 1749-016 Lisboa, Portugal.
²⁷ University of Washington, Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, Seattle, Washington 98195, USA.
²⁸ Idaho State University, 921 S. 8th Ave, Mail Stop 8106, Pocatello, Idaho 83209-8106, USA.
²⁹ Norwich University, 158 Harmon Drive, Northfield, Vermont 05663, USA.
³⁰ Lancaster University, Physics Department, Lancaster, LA1 4YB, United Kingdom.
³¹ Research Center for Particle Science and Technology, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, Shandong, China.
³² Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education, Shandong University, Qingdao 266237, Shandong, China.
³³ Armstrong Atlantic State University, 11935 Abercorn Street, Savannah, Georgia 31419, USA.
³⁴ University of Alberta, Department of Chemistry, 1-001 CCIS, Edmonton, Alberta T6G 2E9, Canada.
³⁵ University of Alberta, Department of Chemistry, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada.
³⁶ Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, Dresden, 01062, Germany.
³⁷ MTA Atomki, 4001 Debrecen, Hungary.

PMID: 41046433
DOI: 10.1103/gypt-lc9v

Measurement of Reactor Antineutrino Oscillation at SNO

M Abreu et al. Phys Rev Lett. 2025.

. 2025 Sep 19;135(12):121801.

doi: 10.1103/gypt-lc9v.

Authors

Affiliations

¹ Laboratório de Instrumentação e Física Experimental de Partículas (LIP), Av. Prof. Gama Pinto, 2, 1649-003, Lisboa, Portugal.
² Universidade de Lisboa, Instituto Superior Técnico (IST), Departamento de Física, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
³ Queen's University, Department of Physics, Engineering Physics & Astronomy, Kingston, Ontario K7L 3N6, Canada.
⁴ Laurentian University, School of Natural Sciences, 935 Ramsey Lake Road, Sudbury, Ontario P3E 2C6, Canada.
⁵ Laboratório de Instrumentação e Física Experimental de Partículas (LIP), 3004-516, Coimbra, Portugal.
⁶ SNOLAB, Creighton Mine No. 9, 1039 Regional Road 24, Sudbury, Ontario P3Y 1N2, Canada.
⁷ Queen Mary, University of London, School of Physics and Astronomy, 327 Mile End Road, London, E1 4NS, United Kingdom.
⁸ University of California, Berkeley, Department of Physics, Berkeley, California 94720, USA.
⁹ Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720-8153, USA.
¹⁰ University of California, Davis, 1 Shields Avenue, Davis, California 95616, USA.
¹¹ Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973-500, USA.
¹² University of Alberta, Department of Physics, 4-181 CCIS, Edmonton, Alberta T6G 2E1, Canada.
¹³ University of Sussex, Physics and Astronomy, Pevensey II, Falmer, Brighton, BN1 9QH, United Kingdom.
¹⁴ University of Pennsylvania, Department of Physics and Astronomy, 209 South 33rd Street, Philadelphia, Pennsylvania 19104-6396, USA.
¹⁵ Laboratório de Instrumentação e Física Experimental de Partículas, Rua Larga, 3004-516 Coimbra, Portugal.
¹⁶ Universidade de Coimbra, Departamento de Física (FCTUC), 3004-516, Coimbra, Portugal.
¹⁷ Technische Universität Dresden, Institut für Kern und Teilchenphysik, Zellescher Weg 19, Dresden, 01069, Germany.
¹⁸ University of Oxford, The Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United Kingdom.
¹⁹ The Enrico Fermi Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637, USA.
²⁰ King's College London, Department of Physics, Strand Building, Strand, London, WC2R 2LS, United Kingdom.
²¹ University of Liverpool, Department of Physics, Liverpool, L69 3BX, United Kingdom.
²² Boston University, Department of Physics, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA.
²³ Universidad Nacional Autónoma de México (UNAM), Instituto de Física, Apartado Postal 20-364, México D.F., 01000, México.
²⁴ TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada.
²⁵ University of North Carolina, Department of Physics and Astronomy, Phillips Hall, Chapel Hill, North Carolina 27599-3255, USA.
²⁶ Universidade de Lisboa, Faculdade de Ciências (FCUL), Departamento de Física, Campo Grande, Edifício C8, 1749-016 Lisboa, Portugal.
²⁷ University of Washington, Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, Seattle, Washington 98195, USA.
²⁸ Idaho State University, 921 S. 8th Ave, Mail Stop 8106, Pocatello, Idaho 83209-8106, USA.
²⁹ Norwich University, 158 Harmon Drive, Northfield, Vermont 05663, USA.
³⁰ Lancaster University, Physics Department, Lancaster, LA1 4YB, United Kingdom.
³¹ Research Center for Particle Science and Technology, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, Shandong, China.
³² Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education, Shandong University, Qingdao 266237, Shandong, China.
³³ Armstrong Atlantic State University, 11935 Abercorn Street, Savannah, Georgia 31419, USA.
³⁴ University of Alberta, Department of Chemistry, 1-001 CCIS, Edmonton, Alberta T6G 2E9, Canada.
³⁵ University of Alberta, Department of Chemistry, 11227 Saskatchewan Drive, Edmonton, Alberta, T6G 2G2, Canada.
³⁶ Technische Universität Dresden, Faculty of Chemistry and Food Chemistry, Dresden, 01062, Germany.
³⁷ MTA Atomki, 4001 Debrecen, Hungary.

PMID: 41046433
DOI: 10.1103/gypt-lc9v

Abstract

SNO+ Collaboration reports its second spectral analysis of reactor antineutrino oscillation using 286 ton-yr of new data. The measured energies of reactor antineutrino candidates were fitted to obtain the second-most precise determination of the neutrino mass-squared difference Δm_{21}^{2}=(7.96_{-0.42}^{+0.48})×10^{-5} eV^{2}. Constraining Δm_{21}^{2} and sin^{2}θ_{12} with measurements from long-baseline reactor antineutrino and solar neutrino experiments yields Δm_{21}^{2}=(7.58_{-0.17}^{+0.18})×10^{-5} eV^{2} and sin^{2}θ_{12}=0.308±0.013. This fit also yields a first measurement of the flux of geoneutrinos in the Western Hemisphere, with 73_{-43}^{+47} TNU at SNO+.

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Measurement of Reactor Antineutrino Oscillation at SNO

Affiliations

Measurement of Reactor Antineutrino Oscillation at SNO

Authors

Affiliations

Abstract

LinkOut - more resources

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