Search for CP-Violating Neutrino Nonstandard Interactions with the NOvA Experiment

Creators: Acero, M. A.¹; Acharya, B.²; Adamson, P.³; Aliaga, L.³; Anfimov, N.⁴; Antoshkin, A.⁴; Arrieta-Diaz, E.⁵; Asquith, L.⁶; Aurisano, A.⁷; Back, A.⁸; Balashov, N.⁴; Baldi, P.⁹; Bambah, B. A.¹⁰; Bat, A.^{11, 12}; Bays, K.^{13, 14}; Bernstein, R.³; Bezerra, T. J. C.⁶; Bhatnagar, V.¹⁵; Bhattarai, D.²; Bhuyan, B.¹⁶; Bian, J.^{9, 13}; Booth, A. C.^{17, 6}; Bowles, R.⁸; Brahma, B.¹⁸; Bromberg, C.¹⁹; Buchanan, N.²⁰; Butkevich, A.²¹; Calvez, S.²⁰; Carroll, T. J.^{22, 23}; Catano-Mur, E.²⁴; Cesar, J. P.²²; Chatla, A.¹⁰; Chaudhary, S.¹⁶; Chirco, R.¹⁴; Choudhary, B. C.²⁵; Christensen, A.²⁰; Cicala, M. F.²⁶; Coan, T. E.²⁷; Cooleybeck, A.²³; Cortes-Parra, C.⁵; Coveyou, D.²⁸; Cremonesi, L.¹⁷; Davies, G. S.²; Derwent, P. F.³; Djurcic, Z.²⁹; Dolce, M.^{30, 31}; Doyle, D.²⁰; Dueñas Tonguino, D.⁷; Dukes, E. C.²⁸; Dye, A.²; Ehrlich, R.²⁸; Ewart, E.⁸; Filip, P.³²; Franc, J.³³; Frank, M. J.³⁴; Gallagher, H. R.³¹; Gao, F.³⁵; Giri, A.¹⁸; Gomes, R. A.³⁶; Goodman, M. C.²⁹; Groh, M.^{20, 8}; Group, R.²⁸; Habig, A.³⁷; Hakl, F.³⁸; Hartnell, J.⁶; Hatcher, R.³; He, M.³⁹; Heller, K.¹³; Hewes, V⁷; Himmel, A.³; Ivaneev, Y.⁴; Ivanova, A.⁴; Jargowsky, B.⁹; Jarosz, J.²⁰; Johnson, C.²⁰; Judah, M.^{20, 35}; Kakorin, I.⁴; Kaplan, D. M.¹⁴; Kalitkina, A.⁴; Kleykamp, J.²; Klimov, O.⁴; Koerner, L. W.³⁹; Kolupaeva, L.⁴; Kralik, R.^{6, 15}; Kuruppu, C. D.⁴⁰; Kus, V.³³; Lackey, T.^{3, 8}; Lang, K.²²; Lesmeister, J.³⁹; Lister, A.²³; Liu, J.⁹; Lock, J. A.⁶; Lokajicek, M.³²; MacMahon, M.²⁶; Magill, S.²⁹; Mann, W. A.³¹; Manoharan, M. T.⁴¹; Manrique Plata, M.⁸; Marshak, M. L.¹³; Martinez-Casales, M.⁴²; Matveev, V.²¹; Mehta, B.¹⁵; Messier, M. D.⁸; Meyer, H.³⁰; Miao, T.³; Mikola, V.²⁶; Miller, W. H.¹³; Mishra, S.⁴³; Mishra, S. R.⁴⁰; Mislivec, A.¹³; Mohanta, R.¹⁰; Moren, A.³⁷; Morozova, A.⁴; Mu, W.³; Mualem, L.⁴⁴; Muether, M.³⁰; Mulder, K.²⁶; Myers, D.²²; Naples, D.³⁵; Nath, A.¹⁶; Nelleri, S.⁴¹; Nelson, J. K.²⁴; Nichol, R.²⁶; Niner, E.³; Norman, A.³; Norrick, A.³; Nosek, T.⁴⁵; Oh, H.⁷; Olshevskiy, A.⁴; Olson, T.³⁹; Ozkaynak, M.²⁶; Pal, A.⁴⁶; Paley, J.³; Panda, L.⁴⁶; Patterson, R. B.⁴⁴; Pawloski, G.¹³; Petrova, O.⁴; Petti, R.⁴⁰; Prais, L. R.²; Rafique, A.²⁹; Raj, V.⁴⁴; Rajaoalisoa, M.⁷; Ramson, B.³; Ravelhofer, M.^{42, 8}; Rebel, B.^{3, 23}; Roy, P.³⁰; Samoylov, O.⁴; Sanchez, M. C.^{47, 42}; Sánchez Falero, S.⁴²; Shanahan, P.³; Sharma, P.¹⁵; Shmakov, A.⁹; Sheshukov, A.⁴; Shukla, S.⁴³; Singha, D. K.¹⁰; Shorrock, W.⁶; Singh, I.²⁵; Singh, P.^{17, 25}; Singh, V.⁴³; Smith, E.⁸; Smolik, J.³³; Snopok, P.¹⁴; Solomey, N.³⁰; Sousa, A.⁷; Soustruznik, K.⁴⁵; Strait, M.¹³; Suter, L.³; Sutton, A.^{47, 42, 28}; Sutton, K.⁴⁴; Swain, S.⁴⁶; Sweeney, C.²⁶; Sztuc, A.²⁶; Tapia Oregui, B.²²; Tas, P.⁴⁵; Thakore, T.⁷; Thomas, J.^{26, 23}; Tiras, E.^{12, 42}; Torun, Y.¹⁴; Tripathi, J.¹⁵; Trokan-Tenorio, J.²⁴; Urheim, J.⁸; Vahle, P.²⁴; Vallari, Z.⁴⁴; Vasel, J.⁸; Villamil, J. D.⁵; Vockerodt, K. J.¹⁷; Vrba, T.³³; Wallbank, M.⁷; Wetstein, M.⁴²; Whittington, D.⁴⁸; Wickremasinghe, D. A.³; Wieber, T.¹³; Wolcott, J.³¹; Wrobel, M.²⁰; Wu, S.¹³; Wu, W.⁹; Xiao, Y.⁹; Yaeggy, B.⁷; Yahaya, A.³⁰; Yankelevich, A.⁹; Yonehara, K.³; Yu, Y.¹⁴; Zadorozhnyy, S.²¹; Zalesak, J.³²; Zwaska, R.³; NOvA Collaboration

1. University of Atlántico
2. University of Mississippi
3. Fermilab
4. Joint Institute for Nuclear Research
5. University of Magdalena
6. University of Sussex
7. University of Cincinnati
8. Indiana University Bloomington
9. University of California, Irvine
10. University of Hyderabad
11. Bandırma Onyedi Eylül University
12. Erciyes University
13. University of Minnesota
14. Illinois Institute of Technology
15. Panjab University
16. Indian Institute of Technology Guwahati
17. Queen Mary University of London
18. Indian Institute of Technology Hyderabad
19. Michigan State University
20. Colorado State University
21. Institute for Nuclear Research
22. The University of Texas at Austin
23. University of Wisconsin–Madison
24. William & Mary
25. University of Delhi
26. University College London
27. Southern Methodist University
28. University of Virginia
29. Argonne National Laboratory
30. Wichita State University
31. Tufts University
32. Institute of Physics
33. Czech Technical University in Prague
34. University of South Alabama
35. University of Pittsburgh
36. Universidade Federal de Goiás
37. University of Minnesota, Duluth
38. Institute of Computer Science
39. University of Houston
40. University of South Carolina
41. Cochin University of Science and Technology
42. Iowa State University
43. Banaras Hindu University
44. California Institute of Technology
45. Charles University
46. National Institute of Science Education and Research
47. Florida State University
48. Syracuse University

Abstract

This Letter reports a search for charge-parity (CP) symmetry violating nonstandard interactions (NSI) of neutrinos with matter using the NOvA Experiment, and examines their effects on the determination of the standard oscillation parameters. Data from νμ(ν¯μ)→νμ(ν¯μ) and νμ(ν¯μ)→νe(ν¯e) oscillation channels are used to measure the effect of the NSI parameters ϵeμ and ϵeτ. With 90% CL the magnitudes of the NSI couplings are constrained to be |ϵeμ|≲0.3 and |ϵeτ|≲0.4. A degeneracy at |ϵeτ|≈1.8 is reported, and we observe that the presence of NSI limits sensitivity to the standard CP phase δCP.

Copyright and License

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

Acknowledgement

This document was prepared by the NOvA Collaboration using the resources of the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359. This work was supported by the U.S. Department of Energy; the U.S. National Science Foundation; the Department of Science and Technology, India; the European Research Council; the MSMT CR, GA UK, Czech Republic; the RAS, Ministry of Science and Higher Education, and RFBR, Russia; CNPq and FAPEG, Brazil; UKRI, STFC, and the Royal Society, United Kingdom; and the state and University of Minnesota. We are grateful for the contributions of the staffs of the University of Minnesota at the Ash River Laboratory, and of Fermilab.

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