Search for sterile neutrino mixing in the MINOS long-baseline experiment

P. Adamson, C. Andreopoulos, D. J. Auty, D. S. Ayres, C. Backhouse, P. D. Barnes, G. Barr, W. L. Barrett, M. Bishai, A. Blake, G. J. Bock, D. J. Boehnlein, D. Bogert, C. Bower, S. Cavanaugh, J. D. Chapman, D. Cherdack, S. Childress, B. C. Choudhary, J. A B CoelhoJ. H. Cobb, S. J. Coleman, J. P. Cravens, D. Cronin-Hennessy, A. J. Culling, I. Z. Danko, J. K. De Jong, N. E. Devenish, M. V. Diwan, M. Dorman, A. R. Erwin, C. O. Escobar, J. J. Evans, E. Falk, G. J. Feldman, M. V. Frohne, H. R. Gallagher, A. Godley, M. C. Goodman, P. Gouffon, R. Gran, E. W. Grashorn, K. Grzelak, A. Habig, D. Harris, P. G. Harris, J. Hartnell, R. Hatcher, K. Heller, A. Himmel, A. Holin, X. Huang, J. Hylen, G. M. Irwin, Z. Isvan, D. E. Jaffe, C. James, D. Jensen, T. Kafka, S. M S Kasahara, G. Koizumi, S. Kopp, M. Kordosky, D. J. Koskinen, Z. Krahn, A. Kreymer, K. Lang, J. Ling, P. J. Litchfield, R. P. Litchfield, L. Loiacono, P. Lucas, J. Ma, W. A. Mann, A. Marchionni, M. L. Marshak, J. S. Marshall, N. Mayer, A. M. McGowan, R. Mehdiyev, J. R. Meier, M. D. Messier, C. J. Metelko, D. G. Michael, W. H. Miller, S. R. Mishra, J. Mitchell, C. D. Moore, J. Morfín, L. Mualem, S. Mufson, J. Musser, D. Naples, J. K. Nelson, H. B. Newman, R. J. Nichol, T. C. Nicholls, J. P. Ochoa-Ricoux, W. P. Oliver, M. Orchanian, T. Osiecki, R. Ospanov, J. Paley, V. Paolone, R. B. Patterson, Ž Pavlović, G. Pawloski, G. F. Pearce, R. Pittam, R. K. Plunkett, A. Rahaman, R. A. Rameika, T. M. Raufer, B. Rebel, P. A. Rodrigues, C. Rosenfeld, H. A. Rubin, V. A. Ryabov, M. C. Sanchez, N. Saoulidou, J. Schneps, P. Schreiner, P. Shanahan, W. Smart, C. Smith, A. Sousa, P. Stamoulis, M. Strait, N. Tagg, R. L. Talaga, J. Thomas, M. A. Thomson, G. Tinti, R. Toner, G. Tzanakos, J. Urheim, P. Vahle, B. Viren, M. Watabe, A. Weber, R. C. Webb, N. West, C. White, L. Whitehead, S. G. Wojcicki, D. M. Wright, T. Yang, K. Zhang, R. Zwaska

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

A search for depletion of the combined flux of active neutrino species over a 735 km baseline is reported using neutral-current interaction data recorded by the MINOS detectors in the NuMI neutrino beam. Such a depletion is not expected according to conventional interpretations of neutrino oscillation data involving the three known neutrino flavors. A depletion would be a signature of oscillations or decay to postulated noninteracting sterile neutrinos, scenarios not ruled out by existing data. From an exposure of 3.18×1020 protons on target in which neutrinos of energies between ∼500MeV and 120 GeV are produced predominantly as νμ, the visible energy spectrum of candidate neutral-current reactions in the MINOS far detector is reconstructed. Comparison of this spectrum to that inferred from a similarly selected near-detector sample shows that of the portion of the νμ flux observed to disappear in charged-current interaction data, the fraction that could be converting to a sterile state is less than 52% at 90% confidence level (C.L.). The hypothesis that active neutrinos mix with a single sterile neutrino via oscillations is tested by fitting the data to various models. In the particular four-neutrino models considered, the mixing angles θ24 and θ34 are constrained to be less than 11° and 56° at 90% C.L., respectively. The possibility that active neutrinos may decay to sterile neutrinos is also investigated. Pure neutrino decay without oscillations is ruled out at 5.4 standard deviations. For the scenario in which active neutrinos decay into sterile states concurrently with neutrino oscillations, a lower limit is established for the neutrino decay lifetime τ3/m3>2.1×10-12s/eV at 90% C.L.

Original languageEnglish (US)
Article number052004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume81
Issue number5
DOIs
StatePublished - Mar 11 2010

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neutrinos
oscillations
decay
confidence
depletion
neutral currents
detectors
neutrino beams
visible spectrum
standard deviation
energy spectra
signatures
interactions
life (durability)
protons

Cite this

Adamson, P., Andreopoulos, C., Auty, D. J., Ayres, D. S., Backhouse, C., Barnes, P. D., ... Zwaska, R. (2010). Search for sterile neutrino mixing in the MINOS long-baseline experiment. Physical Review D - Particles, Fields, Gravitation and Cosmology, 81(5), [052004]. https://doi.org/10.1103/PhysRevD.81.052004

Search for sterile neutrino mixing in the MINOS long-baseline experiment. / Adamson, P.; Andreopoulos, C.; Auty, D. J.; Ayres, D. S.; Backhouse, C.; Barnes, P. D.; Barr, G.; Barrett, W. L.; Bishai, M.; Blake, A.; Bock, G. J.; Boehnlein, D. J.; Bogert, D.; Bower, C.; Cavanaugh, S.; Chapman, J. D.; Cherdack, D.; Childress, S.; Choudhary, B. C.; Coelho, J. A B; Cobb, J. H.; Coleman, S. J.; Cravens, J. P.; Cronin-Hennessy, D.; Culling, A. J.; Danko, I. Z.; De Jong, J. K.; Devenish, N. E.; Diwan, M. V.; Dorman, M.; Erwin, A. R.; Escobar, C. O.; Evans, J. J.; Falk, E.; Feldman, G. J.; Frohne, M. V.; Gallagher, H. R.; Godley, A.; Goodman, M. C.; Gouffon, P.; Gran, R.; Grashorn, E. W.; Grzelak, K.; Habig, A.; Harris, D.; Harris, P. G.; Hartnell, J.; Hatcher, R.; Heller, K.; Himmel, A.; Holin, A.; Huang, X.; Hylen, J.; Irwin, G. M.; Isvan, Z.; Jaffe, D. E.; James, C.; Jensen, D.; Kafka, T.; Kasahara, S. M S; Koizumi, G.; Kopp, S.; Kordosky, M.; Koskinen, D. J.; Krahn, Z.; Kreymer, A.; Lang, K.; Ling, J.; Litchfield, P. J.; Litchfield, R. P.; Loiacono, L.; Lucas, P.; Ma, J.; Mann, W. A.; Marchionni, A.; Marshak, M. L.; Marshall, J. S.; Mayer, N.; McGowan, A. M.; Mehdiyev, R.; Meier, J. R.; Messier, M. D.; Metelko, C. J.; Michael, D. G.; Miller, W. H.; Mishra, S. R.; Mitchell, J.; Moore, C. D.; Morfín, J.; Mualem, L.; Mufson, S.; Musser, J.; Naples, D.; Nelson, J. K.; Newman, H. B.; Nichol, R. J.; Nicholls, T. C.; Ochoa-Ricoux, J. P.; Oliver, W. P.; Orchanian, M.; Osiecki, T.; Ospanov, R.; Paley, J.; Paolone, V.; Patterson, R. B.; Pavlović, Ž; Pawloski, G.; Pearce, G. F.; Pittam, R.; Plunkett, R. K.; Rahaman, A.; Rameika, R. A.; Raufer, T. M.; Rebel, B.; Rodrigues, P. A.; Rosenfeld, C.; Rubin, H. A.; Ryabov, V. A.; Sanchez, M. C.; Saoulidou, N.; Schneps, J.; Schreiner, P.; Shanahan, P.; Smart, W.; Smith, C.; Sousa, A.; Stamoulis, P.; Strait, M.; Tagg, N.; Talaga, R. L.; Thomas, J.; Thomson, M. A.; Tinti, G.; Toner, R.; Tzanakos, G.; Urheim, J.; Vahle, P.; Viren, B.; Watabe, M.; Weber, A.; Webb, R. C.; West, N.; White, C.; Whitehead, L.; Wojcicki, S. G.; Wright, D. M.; Yang, T.; Zhang, K.; Zwaska, R.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 81, No. 5, 052004, 11.03.2010.

Research output: Contribution to journalArticle

Adamson, P, Andreopoulos, C, Auty, DJ, Ayres, DS, Backhouse, C, Barnes, PD, Barr, G, Barrett, WL, Bishai, M, Blake, A, Bock, GJ, Boehnlein, DJ, Bogert, D, Bower, C, Cavanaugh, S, Chapman, JD, Cherdack, D, Childress, S, Choudhary, BC, Coelho, JAB, Cobb, JH, Coleman, SJ, Cravens, JP, Cronin-Hennessy, D, Culling, AJ, Danko, IZ, De Jong, JK, Devenish, NE, Diwan, MV, Dorman, M, Erwin, AR, Escobar, CO, Evans, JJ, Falk, E, Feldman, GJ, Frohne, MV, Gallagher, HR, Godley, A, Goodman, MC, Gouffon, P, Gran, R, Grashorn, EW, Grzelak, K, Habig, A, Harris, D, Harris, PG, Hartnell, J, Hatcher, R, Heller, K, Himmel, A, Holin, A, Huang, X, Hylen, J, Irwin, GM, Isvan, Z, Jaffe, DE, James, C, Jensen, D, Kafka, T, Kasahara, SMS, Koizumi, G, Kopp, S, Kordosky, M, Koskinen, DJ, Krahn, Z, Kreymer, A, Lang, K, Ling, J, Litchfield, PJ, Litchfield, RP, Loiacono, L, Lucas, P, Ma, J, Mann, WA, Marchionni, A, Marshak, ML, Marshall, JS, Mayer, N, McGowan, AM, Mehdiyev, R, Meier, JR, Messier, MD, Metelko, CJ, Michael, DG, Miller, WH, Mishra, SR, Mitchell, J, Moore, CD, Morfín, J, Mualem, L, Mufson, S, Musser, J, Naples, D, Nelson, JK, Newman, HB, Nichol, RJ, Nicholls, TC, Ochoa-Ricoux, JP, Oliver, WP, Orchanian, M, Osiecki, T, Ospanov, R, Paley, J, Paolone, V, Patterson, RB, Pavlović, Ž, Pawloski, G, Pearce, GF, Pittam, R, Plunkett, RK, Rahaman, A, Rameika, RA, Raufer, TM, Rebel, B, Rodrigues, PA, Rosenfeld, C, Rubin, HA, Ryabov, VA, Sanchez, MC, Saoulidou, N, Schneps, J, Schreiner, P, Shanahan, P, Smart, W, Smith, C, Sousa, A, Stamoulis, P, Strait, M, Tagg, N, Talaga, RL, Thomas, J, Thomson, MA, Tinti, G, Toner, R, Tzanakos, G, Urheim, J, Vahle, P, Viren, B, Watabe, M, Weber, A, Webb, RC, West, N, White, C, Whitehead, L, Wojcicki, SG, Wright, DM, Yang, T, Zhang, K & Zwaska, R 2010, 'Search for sterile neutrino mixing in the MINOS long-baseline experiment', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 81, no. 5, 052004. https://doi.org/10.1103/PhysRevD.81.052004
Adamson, P. ; Andreopoulos, C. ; Auty, D. J. ; Ayres, D. S. ; Backhouse, C. ; Barnes, P. D. ; Barr, G. ; Barrett, W. L. ; Bishai, M. ; Blake, A. ; Bock, G. J. ; Boehnlein, D. J. ; Bogert, D. ; Bower, C. ; Cavanaugh, S. ; Chapman, J. D. ; Cherdack, D. ; Childress, S. ; Choudhary, B. C. ; Coelho, J. A B ; Cobb, J. H. ; Coleman, S. J. ; Cravens, J. P. ; Cronin-Hennessy, D. ; Culling, A. J. ; Danko, I. Z. ; De Jong, J. K. ; Devenish, N. E. ; Diwan, M. V. ; Dorman, M. ; Erwin, A. R. ; Escobar, C. O. ; Evans, J. J. ; Falk, E. ; Feldman, G. J. ; Frohne, M. V. ; Gallagher, H. R. ; Godley, A. ; Goodman, M. C. ; Gouffon, P. ; Gran, R. ; Grashorn, E. W. ; Grzelak, K. ; Habig, A. ; Harris, D. ; Harris, P. G. ; Hartnell, J. ; Hatcher, R. ; Heller, K. ; Himmel, A. ; Holin, A. ; Huang, X. ; Hylen, J. ; Irwin, G. M. ; Isvan, Z. ; Jaffe, D. E. ; James, C. ; Jensen, D. ; Kafka, T. ; Kasahara, S. M S ; Koizumi, G. ; Kopp, S. ; Kordosky, M. ; Koskinen, D. J. ; Krahn, Z. ; Kreymer, A. ; Lang, K. ; Ling, J. ; Litchfield, P. J. ; Litchfield, R. P. ; Loiacono, L. ; Lucas, P. ; Ma, J. ; Mann, W. A. ; Marchionni, A. ; Marshak, M. L. ; Marshall, J. S. ; Mayer, N. ; McGowan, A. M. ; Mehdiyev, R. ; Meier, J. R. ; Messier, M. D. ; Metelko, C. J. ; Michael, D. G. ; Miller, W. H. ; Mishra, S. R. ; Mitchell, J. ; Moore, C. D. ; Morfín, J. ; Mualem, L. ; Mufson, S. ; Musser, J. ; Naples, D. ; Nelson, J. K. ; Newman, H. B. ; Nichol, R. J. ; Nicholls, T. C. ; Ochoa-Ricoux, J. P. ; Oliver, W. P. ; Orchanian, M. ; Osiecki, T. ; Ospanov, R. ; Paley, J. ; Paolone, V. ; Patterson, R. B. ; Pavlović, Ž ; Pawloski, G. ; Pearce, G. F. ; Pittam, R. ; Plunkett, R. K. ; Rahaman, A. ; Rameika, R. A. ; Raufer, T. M. ; Rebel, B. ; Rodrigues, P. A. ; Rosenfeld, C. ; Rubin, H. A. ; Ryabov, V. A. ; Sanchez, M. C. ; Saoulidou, N. ; Schneps, J. ; Schreiner, P. ; Shanahan, P. ; Smart, W. ; Smith, C. ; Sousa, A. ; Stamoulis, P. ; Strait, M. ; Tagg, N. ; Talaga, R. L. ; Thomas, J. ; Thomson, M. A. ; Tinti, G. ; Toner, R. ; Tzanakos, G. ; Urheim, J. ; Vahle, P. ; Viren, B. ; Watabe, M. ; Weber, A. ; Webb, R. C. ; West, N. ; White, C. ; Whitehead, L. ; Wojcicki, S. G. ; Wright, D. M. ; Yang, T. ; Zhang, K. ; Zwaska, R. / Search for sterile neutrino mixing in the MINOS long-baseline experiment. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2010 ; Vol. 81, No. 5.
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title = "Search for sterile neutrino mixing in the MINOS long-baseline experiment",
abstract = "A search for depletion of the combined flux of active neutrino species over a 735 km baseline is reported using neutral-current interaction data recorded by the MINOS detectors in the NuMI neutrino beam. Such a depletion is not expected according to conventional interpretations of neutrino oscillation data involving the three known neutrino flavors. A depletion would be a signature of oscillations or decay to postulated noninteracting sterile neutrinos, scenarios not ruled out by existing data. From an exposure of 3.18×1020 protons on target in which neutrinos of energies between ∼500MeV and 120 GeV are produced predominantly as νμ, the visible energy spectrum of candidate neutral-current reactions in the MINOS far detector is reconstructed. Comparison of this spectrum to that inferred from a similarly selected near-detector sample shows that of the portion of the νμ flux observed to disappear in charged-current interaction data, the fraction that could be converting to a sterile state is less than 52{\%} at 90{\%} confidence level (C.L.). The hypothesis that active neutrinos mix with a single sterile neutrino via oscillations is tested by fitting the data to various models. In the particular four-neutrino models considered, the mixing angles θ24 and θ34 are constrained to be less than 11° and 56° at 90{\%} C.L., respectively. The possibility that active neutrinos may decay to sterile neutrinos is also investigated. Pure neutrino decay without oscillations is ruled out at 5.4 standard deviations. For the scenario in which active neutrinos decay into sterile states concurrently with neutrino oscillations, a lower limit is established for the neutrino decay lifetime τ3/m3>2.1×10-12s/eV at 90{\%} C.L.",
author = "P. Adamson and C. Andreopoulos and Auty, {D. J.} and Ayres, {D. S.} and C. Backhouse and Barnes, {P. D.} and G. Barr and Barrett, {W. L.} and M. Bishai and A. Blake and Bock, {G. J.} and Boehnlein, {D. J.} and D. Bogert and C. Bower and S. Cavanaugh and Chapman, {J. D.} and D. Cherdack and S. Childress and Choudhary, {B. C.} and Coelho, {J. A B} and Cobb, {J. H.} and Coleman, {S. J.} and Cravens, {J. P.} and D. Cronin-Hennessy and Culling, {A. J.} and Danko, {I. Z.} and {De Jong}, {J. K.} and Devenish, {N. E.} and Diwan, {M. V.} and M. Dorman and Erwin, {A. R.} and Escobar, {C. O.} and Evans, {J. J.} and E. Falk and Feldman, {G. J.} and Frohne, {M. V.} and Gallagher, {H. R.} and A. Godley and Goodman, {M. C.} and P. Gouffon and R. Gran and Grashorn, {E. W.} and K. Grzelak and A. Habig and D. Harris and Harris, {P. G.} and J. Hartnell and R. Hatcher and K. Heller and A. Himmel and A. Holin and X. Huang and J. Hylen and Irwin, {G. M.} and Z. Isvan and Jaffe, {D. E.} and C. James and D. Jensen and T. Kafka and Kasahara, {S. M S} and G. Koizumi and S. Kopp and M. Kordosky and Koskinen, {D. J.} and Z. Krahn and A. Kreymer and K. Lang and J. Ling and Litchfield, {P. J.} and Litchfield, {R. P.} and L. Loiacono and P. Lucas and J. Ma and Mann, {W. A.} and A. Marchionni and Marshak, {M. L.} and Marshall, {J. S.} and N. Mayer and McGowan, {A. M.} and R. Mehdiyev and Meier, {J. R.} and Messier, {M. D.} and Metelko, {C. J.} and Michael, {D. G.} and Miller, {W. H.} and Mishra, {S. R.} and J. Mitchell and Moore, {C. D.} and J. Morf{\'i}n and L. Mualem and S. Mufson and J. Musser and D. Naples and Nelson, {J. K.} and Newman, {H. B.} and Nichol, {R. J.} and Nicholls, {T. C.} and Ochoa-Ricoux, {J. P.} and Oliver, {W. P.} and M. Orchanian and T. Osiecki and R. Ospanov and J. Paley and V. Paolone and Patterson, {R. B.} and Ž Pavlović and G. Pawloski and Pearce, {G. F.} and R. Pittam and Plunkett, {R. K.} and A. Rahaman and Rameika, {R. A.} and Raufer, {T. M.} and B. Rebel and Rodrigues, {P. A.} and C. Rosenfeld and Rubin, {H. A.} and Ryabov, {V. A.} and Sanchez, {M. C.} and N. Saoulidou and J. Schneps and P. Schreiner and P. Shanahan and W. Smart and C. Smith and A. Sousa and P. Stamoulis and M. Strait and N. Tagg and Talaga, {R. L.} and J. Thomas and Thomson, {M. A.} and G. Tinti and R. Toner and G. Tzanakos and J. Urheim and P. Vahle and B. Viren and M. Watabe and A. Weber and Webb, {R. C.} and N. West and C. White and L. Whitehead and Wojcicki, {S. G.} and Wright, {D. M.} and T. Yang and K. Zhang and R. Zwaska",
year = "2010",
month = "3",
day = "11",
doi = "10.1103/PhysRevD.81.052004",
language = "English (US)",
volume = "81",
journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",
issn = "1550-7998",
number = "5",

}

TY - JOUR

T1 - Search for sterile neutrino mixing in the MINOS long-baseline experiment

AU - Adamson, P.

AU - Andreopoulos, C.

AU - Auty, D. J.

AU - Ayres, D. S.

AU - Backhouse, C.

AU - Barnes, P. D.

AU - Barr, G.

AU - Barrett, W. L.

AU - Bishai, M.

AU - Blake, A.

AU - Bock, G. J.

AU - Boehnlein, D. J.

AU - Bogert, D.

AU - Bower, C.

AU - Cavanaugh, S.

AU - Chapman, J. D.

AU - Cherdack, D.

AU - Childress, S.

AU - Choudhary, B. C.

AU - Coelho, J. A B

AU - Cobb, J. H.

AU - Coleman, S. J.

AU - Cravens, J. P.

AU - Cronin-Hennessy, D.

AU - Culling, A. J.

AU - Danko, I. Z.

AU - De Jong, J. K.

AU - Devenish, N. E.

AU - Diwan, M. V.

AU - Dorman, M.

AU - Erwin, A. R.

AU - Escobar, C. O.

AU - Evans, J. J.

AU - Falk, E.

AU - Feldman, G. J.

AU - Frohne, M. V.

AU - Gallagher, H. R.

AU - Godley, A.

AU - Goodman, M. C.

AU - Gouffon, P.

AU - Gran, R.

AU - Grashorn, E. W.

AU - Grzelak, K.

AU - Habig, A.

AU - Harris, D.

AU - Harris, P. G.

AU - Hartnell, J.

AU - Hatcher, R.

AU - Heller, K.

AU - Himmel, A.

AU - Holin, A.

AU - Huang, X.

AU - Hylen, J.

AU - Irwin, G. M.

AU - Isvan, Z.

AU - Jaffe, D. E.

AU - James, C.

AU - Jensen, D.

AU - Kafka, T.

AU - Kasahara, S. M S

AU - Koizumi, G.

AU - Kopp, S.

AU - Kordosky, M.

AU - Koskinen, D. J.

AU - Krahn, Z.

AU - Kreymer, A.

AU - Lang, K.

AU - Ling, J.

AU - Litchfield, P. J.

AU - Litchfield, R. P.

AU - Loiacono, L.

AU - Lucas, P.

AU - Ma, J.

AU - Mann, W. A.

AU - Marchionni, A.

AU - Marshak, M. L.

AU - Marshall, J. S.

AU - Mayer, N.

AU - McGowan, A. M.

AU - Mehdiyev, R.

AU - Meier, J. R.

AU - Messier, M. D.

AU - Metelko, C. J.

AU - Michael, D. G.

AU - Miller, W. H.

AU - Mishra, S. R.

AU - Mitchell, J.

AU - Moore, C. D.

AU - Morfín, J.

AU - Mualem, L.

AU - Mufson, S.

AU - Musser, J.

AU - Naples, D.

AU - Nelson, J. K.

AU - Newman, H. B.

AU - Nichol, R. J.

AU - Nicholls, T. C.

AU - Ochoa-Ricoux, J. P.

AU - Oliver, W. P.

AU - Orchanian, M.

AU - Osiecki, T.

AU - Ospanov, R.

AU - Paley, J.

AU - Paolone, V.

AU - Patterson, R. B.

AU - Pavlović, Ž

AU - Pawloski, G.

AU - Pearce, G. F.

AU - Pittam, R.

AU - Plunkett, R. K.

AU - Rahaman, A.

AU - Rameika, R. A.

AU - Raufer, T. M.

AU - Rebel, B.

AU - Rodrigues, P. A.

AU - Rosenfeld, C.

AU - Rubin, H. A.

AU - Ryabov, V. A.

AU - Sanchez, M. C.

AU - Saoulidou, N.

AU - Schneps, J.

AU - Schreiner, P.

AU - Shanahan, P.

AU - Smart, W.

AU - Smith, C.

AU - Sousa, A.

AU - Stamoulis, P.

AU - Strait, M.

AU - Tagg, N.

AU - Talaga, R. L.

AU - Thomas, J.

AU - Thomson, M. A.

AU - Tinti, G.

AU - Toner, R.

AU - Tzanakos, G.

AU - Urheim, J.

AU - Vahle, P.

AU - Viren, B.

AU - Watabe, M.

AU - Weber, A.

AU - Webb, R. C.

AU - West, N.

AU - White, C.

AU - Whitehead, L.

AU - Wojcicki, S. G.

AU - Wright, D. M.

AU - Yang, T.

AU - Zhang, K.

AU - Zwaska, R.

PY - 2010/3/11

Y1 - 2010/3/11

N2 - A search for depletion of the combined flux of active neutrino species over a 735 km baseline is reported using neutral-current interaction data recorded by the MINOS detectors in the NuMI neutrino beam. Such a depletion is not expected according to conventional interpretations of neutrino oscillation data involving the three known neutrino flavors. A depletion would be a signature of oscillations or decay to postulated noninteracting sterile neutrinos, scenarios not ruled out by existing data. From an exposure of 3.18×1020 protons on target in which neutrinos of energies between ∼500MeV and 120 GeV are produced predominantly as νμ, the visible energy spectrum of candidate neutral-current reactions in the MINOS far detector is reconstructed. Comparison of this spectrum to that inferred from a similarly selected near-detector sample shows that of the portion of the νμ flux observed to disappear in charged-current interaction data, the fraction that could be converting to a sterile state is less than 52% at 90% confidence level (C.L.). The hypothesis that active neutrinos mix with a single sterile neutrino via oscillations is tested by fitting the data to various models. In the particular four-neutrino models considered, the mixing angles θ24 and θ34 are constrained to be less than 11° and 56° at 90% C.L., respectively. The possibility that active neutrinos may decay to sterile neutrinos is also investigated. Pure neutrino decay without oscillations is ruled out at 5.4 standard deviations. For the scenario in which active neutrinos decay into sterile states concurrently with neutrino oscillations, a lower limit is established for the neutrino decay lifetime τ3/m3>2.1×10-12s/eV at 90% C.L.

AB - A search for depletion of the combined flux of active neutrino species over a 735 km baseline is reported using neutral-current interaction data recorded by the MINOS detectors in the NuMI neutrino beam. Such a depletion is not expected according to conventional interpretations of neutrino oscillation data involving the three known neutrino flavors. A depletion would be a signature of oscillations or decay to postulated noninteracting sterile neutrinos, scenarios not ruled out by existing data. From an exposure of 3.18×1020 protons on target in which neutrinos of energies between ∼500MeV and 120 GeV are produced predominantly as νμ, the visible energy spectrum of candidate neutral-current reactions in the MINOS far detector is reconstructed. Comparison of this spectrum to that inferred from a similarly selected near-detector sample shows that of the portion of the νμ flux observed to disappear in charged-current interaction data, the fraction that could be converting to a sterile state is less than 52% at 90% confidence level (C.L.). The hypothesis that active neutrinos mix with a single sterile neutrino via oscillations is tested by fitting the data to various models. In the particular four-neutrino models considered, the mixing angles θ24 and θ34 are constrained to be less than 11° and 56° at 90% C.L., respectively. The possibility that active neutrinos may decay to sterile neutrinos is also investigated. Pure neutrino decay without oscillations is ruled out at 5.4 standard deviations. For the scenario in which active neutrinos decay into sterile states concurrently with neutrino oscillations, a lower limit is established for the neutrino decay lifetime τ3/m3>2.1×10-12s/eV at 90% C.L.

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U2 - 10.1103/PhysRevD.81.052004

DO - 10.1103/PhysRevD.81.052004

M3 - Article

AN - SCOPUS:77950563942

VL - 81

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 5

M1 - 052004

ER -