The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2

W. W.M. Allison; G. J. Alner; D. S. Ayres; G. Barr; W. L. Barrett; C. Bode; P. M. Border; C. B. Brooks; J. H. Cobb; R. J. Cotton; H. Courant; D. M. Demuth; T. H. Fields; H. R. Gallagher; C. Garcia-Garcia; M. C. Goodman; R. Gran; T. Joffe-Minor; T. Kafka; S. M.S. Kasahara; W. Leeson; P. J. Litchfield; N. P. Longley; W. A. Mann; M. L. Marshak; R. H. Milburn; W. H. Miller; L. Mualem; A. Napier; W. P. Oliver; G. F. Pearce; E. A. Peterson; D. A. Petyt; L. E. Price; K. Ruddick; M. Sanchez; J. Schneps; M. H. Schub; R. Seidlein; A. Stassinakis; J. L. Thron; V. Vassiliev; G. Villaume; S. Wakely; D. Wall; N. West; U. M. Wielgosz

doi:10.1016/S0370-2693(99)00056-8

The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2

W. W.M. Allison, G. J. Alner, D. S. Ayres, G. Barr, W. L. Barrett, C. Bode, P. M. Border, C. B. Brooks, J. H. Cobb, R. J. Cotton, H. Courant, D. M. Demuth, T. H. Fields, H. R. Gallagher, C. Garcia-Garcia, M. C. Goodman, R. Gran, T. Joffe-Minor, T. Kafka, S. M.S. KasaharaW. Leeson, P. J. Litchfield, N. P. Longley, W. A. Mann, M. L. Marshak, R. H. Milburn, W. H. Miller, L. Mualem, A. Napier, W. P. Oliver, G. F. Pearce, E. A. Peterson, D. A. Petyt, L. E. Price, K. Ruddick, M. Sanchez, J. Schneps, M. H. Schub, R. Seidlein, A. Stassinakis, J. L. Thron, V. Vassiliev, G. Villaume, S. Wakely, D. Wall, N. West, U. M. Wielgosz

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Abstract

We report a measurement of the atmospheric neutrino flavor ratio, R, using a sample of quasi-elastic neutrino interactions occurring in an iron medium. The flavor ratio (tracks/showers) of atmospheric neutrinos in a 3.9 fiducial kiloton-year exposure of Soudan 2 is 0.64 ± 0.11(stat.) ± 0.06(syst.) of that expected. Important aspects of our main analysis have been checked by carrying out two independent, alternative analyses; one is based upon automated scanning, the other uses a multivariate approach for background subtraction. Similar results are found by all three approaches.

Original language	English (US)
Pages (from-to)	137-144
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	449
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(99)00056-8
State	Published - 1999

Bibliographical note

Funding Information:
This work was undertaken with the support of the U.S. Department of Energy, the State and University of Minnesota, and the U.K. Particle Physics and Astronomy Research Council. We would also like to thank: the Minnesota Department of Natural Resources for allowing us to use the facilities of the Soudan Underground Mine State Park; the staff of the Park, particularly Park Managers P. Wannarka and J. Essig, for their day to day support; and Messrs B. Anderson, J. Beaty, G. Benson, D. Carlson, J. Eininger and J. Meier of the Soudan Mine Crew for their work in the installation and running of the experiment.

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Allison, W. W. M., Alner, G. J., Ayres, D. S., Barr, G., Barrett, W. L., Bode, C., Border, P. M., Brooks, C. B., Cobb, J. H., Cotton, R. J., Courant, H., Demuth, D. M., Fields, T. H., Gallagher, H. R., Garcia-Garcia, C., Goodman, M. C., Gran, R., Joffe-Minor, T., Kafka, T., ... Wielgosz, U. M. (1999). The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 449(1-2), 137-144. https://doi.org/10.1016/S0370-2693(99)00056-8

Allison, WWM, Alner, GJ, Ayres, DS, Barr, G, Barrett, WL, Bode, C, Border, PM, Brooks, CB, Cobb, JH, Cotton, RJ, Courant, H, Demuth, DM, Fields, TH, Gallagher, HR, Garcia-Garcia, C, Goodman, MC, Gran, R, Joffe-Minor, T, Kafka, T, Kasahara, SMS, Leeson, W, Litchfield, PJ, Longley, NP, Mann, WA, Marshak, ML, Milburn, RH, Miller, WH, Mualem, L, Napier, A, Oliver, WP, Pearce, GF, Peterson, EA, Petyt, DA, Price, LE, Ruddick, K, Sanchez, M, Schneps, J, Schub, MH, Seidlein, R, Stassinakis, A, Thron, JL, Vassiliev, V, Villaume, G, Wakely, S, Wall, D, West, N & Wielgosz, UM 1999, 'The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 449, no. 1-2, pp. 137-144. https://doi.org/10.1016/S0370-2693(99)00056-8

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title = "The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2",

abstract = "We report a measurement of the atmospheric neutrino flavor ratio, R, using a sample of quasi-elastic neutrino interactions occurring in an iron medium. The flavor ratio (tracks/showers) of atmospheric neutrinos in a 3.9 fiducial kiloton-year exposure of Soudan 2 is 0.64 ± 0.11(stat.) ± 0.06(syst.) of that expected. Important aspects of our main analysis have been checked by carrying out two independent, alternative analyses; one is based upon automated scanning, the other uses a multivariate approach for background subtraction. Similar results are found by all three approaches.",

author = "Allison, {W. W.M.} and Alner, {G. J.} and Ayres, {D. S.} and G. Barr and Barrett, {W. L.} and C. Bode and Border, {P. M.} and Brooks, {C. B.} and Cobb, {J. H.} and Cotton, {R. J.} and H. Courant and Demuth, {D. M.} and Fields, {T. H.} and Gallagher, {H. R.} and C. Garcia-Garcia and Goodman, {M. C.} and R. Gran and T. Joffe-Minor and T. Kafka and Kasahara, {S. M.S.} and W. Leeson and Litchfield, {P. J.} and Longley, {N. P.} and Mann, {W. A.} and Marshak, {M. L.} and Milburn, {R. H.} and Miller, {W. H.} and L. Mualem and A. Napier and Oliver, {W. P.} and Pearce, {G. F.} and Peterson, {E. A.} and Petyt, {D. A.} and Price, {L. E.} and K. Ruddick and M. Sanchez and J. Schneps and Schub, {M. H.} and R. Seidlein and A. Stassinakis and Thron, {J. L.} and V. Vassiliev and G. Villaume and S. Wakely and D. Wall and N. West and Wielgosz, {U. M.}",

note = "Funding Information: This work was undertaken with the support of the U.S. Department of Energy, the State and University of Minnesota, and the U.K. Particle Physics and Astronomy Research Council. We would also like to thank: the Minnesota Department of Natural Resources for allowing us to use the facilities of the Soudan Underground Mine State Park; the staff of the Park, particularly Park Managers P. Wannarka and J. Essig, for their day to day support; and Messrs B. Anderson, J. Beaty, G. Benson, D. Carlson, J. Eininger and J. Meier of the Soudan Mine Crew for their work in the installation and running of the experiment. ",

year = "1999",

doi = "10.1016/S0370-2693(99)00056-8",

language = "English (US)",

volume = "449",

pages = "137--144",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

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TY - JOUR

T1 - The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2

AU - Allison, W. W.M.

AU - Alner, G. J.

AU - Ayres, D. S.

AU - Barr, G.

AU - Barrett, W. L.

AU - Bode, C.

AU - Border, P. M.

AU - Brooks, C. B.

AU - Cobb, J. H.

AU - Cotton, R. J.

AU - Courant, H.

AU - Demuth, D. M.

AU - Fields, T. H.

AU - Gallagher, H. R.

AU - Garcia-Garcia, C.

AU - Goodman, M. C.

AU - Gran, R.

AU - Joffe-Minor, T.

AU - Kafka, T.

AU - Kasahara, S. M.S.

AU - Leeson, W.

AU - Litchfield, P. J.

AU - Longley, N. P.

AU - Mann, W. A.

AU - Marshak, M. L.

AU - Milburn, R. H.

AU - Miller, W. H.

AU - Mualem, L.

AU - Napier, A.

AU - Oliver, W. P.

AU - Pearce, G. F.

AU - Peterson, E. A.

AU - Petyt, D. A.

AU - Price, L. E.

AU - Ruddick, K.

AU - Sanchez, M.

AU - Schneps, J.

AU - Schub, M. H.

AU - Seidlein, R.

AU - Stassinakis, A.

AU - Thron, J. L.

AU - Vassiliev, V.

AU - Villaume, G.

AU - Wakely, S.

AU - Wall, D.

AU - West, N.

AU - Wielgosz, U. M.

N1 - Funding Information: This work was undertaken with the support of the U.S. Department of Energy, the State and University of Minnesota, and the U.K. Particle Physics and Astronomy Research Council. We would also like to thank: the Minnesota Department of Natural Resources for allowing us to use the facilities of the Soudan Underground Mine State Park; the staff of the Park, particularly Park Managers P. Wannarka and J. Essig, for their day to day support; and Messrs B. Anderson, J. Beaty, G. Benson, D. Carlson, J. Eininger and J. Meier of the Soudan Mine Crew for their work in the installation and running of the experiment.

PY - 1999

Y1 - 1999

N2 - We report a measurement of the atmospheric neutrino flavor ratio, R, using a sample of quasi-elastic neutrino interactions occurring in an iron medium. The flavor ratio (tracks/showers) of atmospheric neutrinos in a 3.9 fiducial kiloton-year exposure of Soudan 2 is 0.64 ± 0.11(stat.) ± 0.06(syst.) of that expected. Important aspects of our main analysis have been checked by carrying out two independent, alternative analyses; one is based upon automated scanning, the other uses a multivariate approach for background subtraction. Similar results are found by all three approaches.

AB - We report a measurement of the atmospheric neutrino flavor ratio, R, using a sample of quasi-elastic neutrino interactions occurring in an iron medium. The flavor ratio (tracks/showers) of atmospheric neutrinos in a 3.9 fiducial kiloton-year exposure of Soudan 2 is 0.64 ± 0.11(stat.) ± 0.06(syst.) of that expected. Important aspects of our main analysis have been checked by carrying out two independent, alternative analyses; one is based upon automated scanning, the other uses a multivariate approach for background subtraction. Similar results are found by all three approaches.

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U2 - 10.1016/S0370-2693(99)00056-8

DO - 10.1016/S0370-2693(99)00056-8

M3 - Article

AN - SCOPUS:4243355121

SN - 0370-2693

VL - 449

SP - 137

EP - 144

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2

Abstract

Bibliographical note

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