Abstract
The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth of 2070 meters water-equivalent in the Soudan mine, Minnesota. This paper presents the first MINOS observations of νμ and ν̄μ charged-current atmospheric neutrino interactions based on an exposure of 418 days. The ratio of upward- to downward-going events in the data is compared to the Monte Carlo expectation in the absence of neutrino oscillations, giving Rup/downdata/Rup/downMC=0.62-0.14+0.19(stat.) ±0.02(sys.). An extended maximum likelihood analysis of the observed L/E distributions excludes the null hypothesis of no neutrino oscillations at the 98% confidence level. Using the curvature of the observed muons in the 1.3 T MINOS magnetic field νμ and ν̄μ interactions are separated. The ratio of ν̄μ to νμ events in the data is compared to the Monte Carlo expectation assuming neutrinos and antineutrinos oscillate in the same manner, giving Rν̄μ/νμdata/Rν̄μ/νμMC=0.96-0. 27+0.38(stat.)±0.15(sys.), where the errors are the statistical and systematic uncertainties. Although the statistics are limited, this is the first direct observation of atmospheric neutrino interactions separately for νμ and ν̄μ.
| Original language | English (US) |
|---|---|
| Article number | 072002 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 73 |
| Issue number | 7 |
| DOIs | |
| State | Published - 2006 |
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First observations of separated atmospheric νμ and ν̄μ events in the MINOS detector. / Adamson, P.; Alexopoulos, T.; Allison, W. W M; Alner, G. J.; Anderson, K.; Andreopoulos, C.; Andrews, M.; Andrews, R.; Arroyo, C.; Avvakumov, S.; Ayres, D. S.; Baller, B.; Barish, B.; Barker, M. A.; Barnes, P. D.; Barr, G.; Barrett, W. L.; Beall, E.; Becker, B. R.; Belias, A.; Bergfeld, T.; Bernstein, R. H.; Bhattacharya, D.; Bishai, M.; Blake, A.; Bocean, V.; Bock, B.; Bock, G. J.; Boehm, J.; Boehnlein, D. J.; Bogert, D.; Border, P. M.; Bower, C.; Boyd, S.; Buckley-Geer, E.; Byon-Wagner, A.; Cabrera, A.; Chapman, J. D.; Chase, T. R.; Chernichenko, S. K.; Childress, S.; Choudhary, B. C.; Cobb, J. H.; Cossairt, J. D.; Courant, H.; Crane, D. A.; Culling, A. J.; Dawson, J. W.; DeMuth, D. M.; De Santo, A.; Dierckxsens, M.; Diwan, M. V.; Dorman, M.; Drake, G.; Ducar, R.; Durkin, T.; Erwin, A. R.; Escobar, C. O.; Evans, J.; Fackler, O. D.; Harris, E. Falk; Feldman, G. J.; Felt, N.; Fields, T. H.; Ford, R.; Frohne, M. V.; Gallagher, H. R.; Gebhard, M.; Godley, A.; Gogos, J.; Goodman, M. C.; Gornushkin, Yu; Gouffon, P.; Grashorn, E.; Grossman, N.; Grudzinski, J. J.; Grzelak, K.; Guarino, V.; Habig, A.; Halsall, R.; Hanson, J.; Harris, D.; Harris, P. G.; Hartnell, J.; Hartouni, E. P.; Hatcher, R.; Heller, K.; Hill, N.; Ho, Y.; Howcroft, C.; Hylen, J.; Ignatenko, M.; Indurthy, D.; Irwin, G. M.; James, C.; Jenner, L.; Jensen, D.; Joffe-Minor, T.; Kafka, T.; Kang, H. J.; Kasahara, S. M S; Kilmer, J.; Kim, H.; Koizumi, G.; Kopp, S.; Kordosky, M.; Koskinen, D. J.; Kostin, M.; Krakauer, D. A.; Kumaratunga, S.; Ladran, A. S.; Lang, K.; Laughton, C.; Lebedev, A.; Lee, R.; Lee, W. Y.; Libkind, M. A.; Liu, J.; Litchfield, P. J.; Litchfield, R. P.; Longley, N. P.; Lucas, P.; Luebke, W.; Madani, S.; Maher, E.; Makeev, V.; Mann, W. A.; Marchionni, A.; Marino, A. D.; Marshak, M. L.; Marshall, J. S.; McDonald, J.; McGowan, A.; Meier, J. R.; Merzon, G. I.; Messier, M. D.; Michael, D. G.; Milburn, R. H.; Miller, J. L.; Miller, W. H.; Mishra, S. R.; Miyagawa, P. S.; Moore, C.; Morfín, J.; Morse, R.; Mualem, L.; Mufson, S.; Murgia, S.; Murtagh, M. J.; Musser, J.; Naples, D.; Nelson, C.; Nelson, J. K.; Newman, H. B.; Nezrick, F.; Nichol, R. J.; Nicholls, T. C.; Ochoa-Ricoux, J. P.; Oliver, J.; Oliver, W. P.; Onuchin, V. A.; Osiecki, T.; Ospanov, R.; Paley, J.; Paolone, V.; Para, A.; Patzak, T.; Pavlovich, Z.; Pearce, G. F.; Pearson, N.; Peck, C. W.; Perry, C.; Peterson, E. A.; Petyt, D. A.; Ping, H.; Piteira, R.; Pla-Dalmau, A.; Plunkett, R. K.; Price, L. E.; Proga, M.; Pushka, D. R.; Rahman, D.; Rameika, R. A.; Raufer, T. M.; Read, A. L.; Rebel, B.; Reyna, D. E.; Rosenfeld, C.; Rubin, H. A.; Ruddick, K.; Ryabov, V. A.; Saakyan, R.; Sanchez, M. C.; Saoulidou, N.; Schneps, J.; Schoessow, P. V.; Schreiner, P.; Schwienhorst, R.; Semenov, V. K.; Seun, S. M.; Shanahan, P.; Shield, P. D.; Smart, W.; Smirnitsky, V.; Smith, C.; Smith, P. N.; Sousa, A.; Speakman, B.; Stamoulis, P.; Stefanik, A.; Sullivan, P.; Swan, J. M.; Symes, P. A.; Tagg, N.; Talaga, R. L.; Tetteh-Lartey, E.; Thomas, J.; Thompson, J.; Thomson, M. A.; Thron, J. L.; Trendler, R.; Trevor, J.; Trostin, I.; Tsarev, V. A.; Tzanakos, G.; Urheim, J.; Vahle, P.; Vakili, M.; Vaziri, K.; Velissaris, C.; Verebryusov, V.; Viren, B.; Wai, L.; Ward, C. P.; Ward, D. R.; Watabe, M.; Weber, A.; Webb, R. C.; Wehmann, A.; West, N.; White, C.; White, R. F.; Wojcicki, S. G.; Wright, D. M.; Wu, Q. K.; Yan, W. G.; Yang, T.; Yumiceva, F. X.; Yun, J. C.; Zheng, H.; Zois, M.; Zwaska, R.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 73, No. 7, 072002, 2006.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - First observations of separated atmospheric νμ and ν̄μ events in the MINOS detector
AU - Adamson, P.
AU - Alexopoulos, T.
AU - Allison, W. W M
AU - Alner, G. J.
AU - Anderson, K.
AU - Andreopoulos, C.
AU - Andrews, M.
AU - Andrews, R.
AU - Arroyo, C.
AU - Avvakumov, S.
AU - Ayres, D. S.
AU - Baller, B.
AU - Barish, B.
AU - Barker, M. A.
AU - Barnes, P. D.
AU - Barr, G.
AU - Barrett, W. L.
AU - Beall, E.
AU - Becker, B. R.
AU - Belias, A.
AU - Bergfeld, T.
AU - Bernstein, R. H.
AU - Bhattacharya, D.
AU - Bishai, M.
AU - Blake, A.
AU - Bocean, V.
AU - Bock, B.
AU - Bock, G. J.
AU - Boehm, J.
AU - Boehnlein, D. J.
AU - Bogert, D.
AU - Border, P. M.
AU - Bower, C.
AU - Boyd, S.
AU - Buckley-Geer, E.
AU - Byon-Wagner, A.
AU - Cabrera, A.
AU - Chapman, J. D.
AU - Chase, T. R.
AU - Chernichenko, S. K.
AU - Childress, S.
AU - Choudhary, B. C.
AU - Cobb, J. H.
AU - Cossairt, J. D.
AU - Courant, H.
AU - Crane, D. A.
AU - Culling, A. J.
AU - Dawson, J. W.
AU - DeMuth, D. M.
AU - De Santo, A.
AU - Dierckxsens, M.
AU - Diwan, M. V.
AU - Dorman, M.
AU - Drake, G.
AU - Ducar, R.
AU - Durkin, T.
AU - Erwin, A. R.
AU - Escobar, C. O.
AU - Evans, J.
AU - Fackler, O. D.
AU - Harris, E. Falk
AU - Feldman, G. J.
AU - Felt, N.
AU - Fields, T. H.
AU - Ford, R.
AU - Frohne, M. V.
AU - Gallagher, H. R.
AU - Gebhard, M.
AU - Godley, A.
AU - Gogos, J.
AU - Goodman, M. C.
AU - Gornushkin, Yu
AU - Gouffon, P.
AU - Grashorn, E.
AU - Grossman, N.
AU - Grudzinski, J. J.
AU - Grzelak, K.
AU - Guarino, V.
AU - Habig, A.
AU - Halsall, R.
AU - Hanson, J.
AU - Harris, D.
AU - Harris, P. G.
AU - Hartnell, J.
AU - Hartouni, E. P.
AU - Hatcher, R.
AU - Heller, K.
AU - Hill, N.
AU - Ho, Y.
AU - Howcroft, C.
AU - Hylen, J.
AU - Ignatenko, M.
AU - Indurthy, D.
AU - Irwin, G. M.
AU - James, C.
AU - Jenner, L.
AU - Jensen, D.
AU - Joffe-Minor, T.
AU - Kafka, T.
AU - Kang, H. J.
AU - Kasahara, S. M S
AU - Kilmer, J.
AU - Kim, H.
AU - Koizumi, G.
AU - Kopp, S.
AU - Kordosky, M.
AU - Koskinen, D. J.
AU - Kostin, M.
AU - Krakauer, D. A.
AU - Kumaratunga, S.
AU - Ladran, A. S.
AU - Lang, K.
AU - Laughton, C.
AU - Lebedev, A.
AU - Lee, R.
AU - Lee, W. Y.
AU - Libkind, M. A.
AU - Liu, J.
AU - Litchfield, P. J.
AU - Litchfield, R. P.
AU - Longley, N. P.
AU - Lucas, P.
AU - Luebke, W.
AU - Madani, S.
AU - Maher, E.
AU - Makeev, V.
AU - Mann, W. A.
AU - Marchionni, A.
AU - Marino, A. D.
AU - Marshak, M. L.
AU - Marshall, J. S.
AU - McDonald, J.
AU - McGowan, A.
AU - Meier, J. R.
AU - Merzon, G. I.
AU - Messier, M. D.
AU - Michael, D. G.
AU - Milburn, R. H.
AU - Miller, J. L.
AU - Miller, W. H.
AU - Mishra, S. R.
AU - Miyagawa, P. S.
AU - Moore, C.
AU - Morfín, J.
AU - Morse, R.
AU - Mualem, L.
AU - Mufson, S.
AU - Murgia, S.
AU - Murtagh, M. J.
AU - Musser, J.
AU - Naples, D.
AU - Nelson, C.
AU - Nelson, J. K.
AU - Newman, H. B.
AU - Nezrick, F.
AU - Nichol, R. J.
AU - Nicholls, T. C.
AU - Ochoa-Ricoux, J. P.
AU - Oliver, J.
AU - Oliver, W. P.
AU - Onuchin, V. A.
AU - Osiecki, T.
AU - Ospanov, R.
AU - Paley, J.
AU - Paolone, V.
AU - Para, A.
AU - Patzak, T.
AU - Pavlovich, Z.
AU - Pearce, G. F.
AU - Pearson, N.
AU - Peck, C. W.
AU - Perry, C.
AU - Peterson, E. A.
AU - Petyt, D. A.
AU - Ping, H.
AU - Piteira, R.
AU - Pla-Dalmau, A.
AU - Plunkett, R. K.
AU - Price, L. E.
AU - Proga, M.
AU - Pushka, D. R.
AU - Rahman, D.
AU - Rameika, R. A.
AU - Raufer, T. M.
AU - Read, A. L.
AU - Rebel, B.
AU - Reyna, D. E.
AU - Rosenfeld, C.
AU - Rubin, H. A.
AU - Ruddick, K.
AU - Ryabov, V. A.
AU - Saakyan, R.
AU - Sanchez, M. C.
AU - Saoulidou, N.
AU - Schneps, J.
AU - Schoessow, P. V.
AU - Schreiner, P.
AU - Schwienhorst, R.
AU - Semenov, V. K.
AU - Seun, S. M.
AU - Shanahan, P.
AU - Shield, P. D.
AU - Smart, W.
AU - Smirnitsky, V.
AU - Smith, C.
AU - Smith, P. N.
AU - Sousa, A.
AU - Speakman, B.
AU - Stamoulis, P.
AU - Stefanik, A.
AU - Sullivan, P.
AU - Swan, J. M.
AU - Symes, P. A.
AU - Tagg, N.
AU - Talaga, R. L.
AU - Tetteh-Lartey, E.
AU - Thomas, J.
AU - Thompson, J.
AU - Thomson, M. A.
AU - Thron, J. L.
AU - Trendler, R.
AU - Trevor, J.
AU - Trostin, I.
AU - Tsarev, V. A.
AU - Tzanakos, G.
AU - Urheim, J.
AU - Vahle, P.
AU - Vakili, M.
AU - Vaziri, K.
AU - Velissaris, C.
AU - Verebryusov, V.
AU - Viren, B.
AU - Wai, L.
AU - Ward, C. P.
AU - Ward, D. R.
AU - Watabe, M.
AU - Weber, A.
AU - Webb, R. C.
AU - Wehmann, A.
AU - West, N.
AU - White, C.
AU - White, R. F.
AU - Wojcicki, S. G.
AU - Wright, D. M.
AU - Wu, Q. K.
AU - Yan, W. G.
AU - Yang, T.
AU - Yumiceva, F. X.
AU - Yun, J. C.
AU - Zheng, H.
AU - Zois, M.
AU - Zwaska, R.
N1 - Copyright: Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth of 2070 meters water-equivalent in the Soudan mine, Minnesota. This paper presents the first MINOS observations of νμ and ν̄μ charged-current atmospheric neutrino interactions based on an exposure of 418 days. The ratio of upward- to downward-going events in the data is compared to the Monte Carlo expectation in the absence of neutrino oscillations, giving Rup/downdata/Rup/downMC=0.62-0.14+0.19(stat.) ±0.02(sys.). An extended maximum likelihood analysis of the observed L/E distributions excludes the null hypothesis of no neutrino oscillations at the 98% confidence level. Using the curvature of the observed muons in the 1.3 T MINOS magnetic field νμ and ν̄μ interactions are separated. The ratio of ν̄μ to νμ events in the data is compared to the Monte Carlo expectation assuming neutrinos and antineutrinos oscillate in the same manner, giving Rν̄μ/νμdata/Rν̄μ/νμMC=0.96-0. 27+0.38(stat.)±0.15(sys.), where the errors are the statistical and systematic uncertainties. Although the statistics are limited, this is the first direct observation of atmospheric neutrino interactions separately for νμ and ν̄μ.
AB - The complete 5.4 kton MINOS far detector has been taking data since the beginning of August 2003 at a depth of 2070 meters water-equivalent in the Soudan mine, Minnesota. This paper presents the first MINOS observations of νμ and ν̄μ charged-current atmospheric neutrino interactions based on an exposure of 418 days. The ratio of upward- to downward-going events in the data is compared to the Monte Carlo expectation in the absence of neutrino oscillations, giving Rup/downdata/Rup/downMC=0.62-0.14+0.19(stat.) ±0.02(sys.). An extended maximum likelihood analysis of the observed L/E distributions excludes the null hypothesis of no neutrino oscillations at the 98% confidence level. Using the curvature of the observed muons in the 1.3 T MINOS magnetic field νμ and ν̄μ interactions are separated. The ratio of ν̄μ to νμ events in the data is compared to the Monte Carlo expectation assuming neutrinos and antineutrinos oscillate in the same manner, giving Rν̄μ/νμdata/Rν̄μ/νμMC=0.96-0. 27+0.38(stat.)±0.15(sys.), where the errors are the statistical and systematic uncertainties. Although the statistics are limited, this is the first direct observation of atmospheric neutrino interactions separately for νμ and ν̄μ.
UR - http://www.scopus.com/inward/record.url?scp=33645573676&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33645573676&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.73.072002
DO - 10.1103/PhysRevD.73.072002
M3 - Article
AN - SCOPUS:33645573676
VL - 73
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 7
M1 - 072002
ER -