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1. Improved Measurement of Muon Antineutrino Disappearance in MINOS

Author

Adamson, P., Ayres, D. S., Backhouse, C., Barr, G., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Cao, S. V., Childress, S., Coelho, J. A. B., Corwin, L., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Escobar, C. O., Evans, J. J., Falk, E., Feldman, G. J., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Graf, N., Gran, R., Grzelak, K., Habig, A., Hartnell, J., Hatcher, R., 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., Kreymer, A., Lang, K., Ling, J., Litchfield, P. J., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mathis, M., Mayer, N., Mehdiyev, R., Meier, J. R., Messier, M. D., Michael, D. G., Miller, W. H., Mishra, S. R., Mitchell, J., Moore, C. D., Mualem, L., Mufson, S., Musser, J., Naples, D., Nelson, J. K., Newman, H. B., Nichol, R. J., Nowak, J. A., Oliver, W. P., Orchanian, M., Pahlka, R. B., Paley, J., Patterson, R. B., Pawloski, G., Phan-Budd, S., Plunkett, R. K., Qiu, X., Radovic, A., Ratchford, J., Rebel, B., Rosenfeld, C., Rubin, H. A., Sanchez, M. C., Schneps, J., Schreckenberger, A., Schreiner, P., Sharma, R., Sousa, A., Strait, M., Tagg, N., Talaga, R. L., Thomas, J., Thomson, M. A., Tinti, G., Toner, R., Torretta, D., Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Walding, J. J., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., and Zwaska, R.

Subjects
Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, QC0793, Neutrino beam, Main injector, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), MINOS, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Neutrino
Abstract

We report an improved measurement of muon anti-neutrino disappearance over a distance of 735km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a muon anti-neutrino enhanced configuration. From a total exposure of 2.95e20 protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of the anti-neutrino "atmospheric" delta-m squared = 2.62 +0.31/-0.28 (stat.) +/- 0.09 (syst.) and constrain the anti-neutrino atmospheric mixing angle >0.75 (90%CL). These values are in agreement with those measured for muon neutrinos, removing the tension reported previously., 5 pages, 4 figures. In submission to Phys.Rev.Lett

Published
2012

2. Search for the disappearance of muon antineutrinos in the NuMI neutrino beam

Author

MINOS Collaboration, Adamson, P., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Cao, S. V., Cavanaugh, S., Cherdack, D., Childress, S., Choudhary, B. C., Coelho, J. A. B., Coleman, S. J., Corwin, L., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, G. J., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Graf, N., Gran, R., Grant, N., Grzelak, K., Habig, A., Hartnell, J., Hatcher, R., Himmel, A., Holin, A., Howcroft, C., 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., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mathis, M., Mayer, N., Mehdiyev, R., Meier, J. R., Messier, M. D., Michael, D. G., Miller, W. H., Mishra, S. R., Mitchell, J., Moore, C. D., Mualem, L., Mufson, S., Musser, J., Naples, D., Nelson, J. K., Newman, H. B., Nichol, R. J., Nowak, J. A., Ochoa-Ricoux, J. P., Oliver, W. P., Orchanian, M., Pahlka, R., Paley, J., Patterson, R. B., Pawloski, G., Pearce, G. F., Phan-Budd, S., Plunkett, R. K., Qiu, X., Ratchford, J., Rebel, B., Rosenfeld, C., Rubin, H. A., Sanchez, M. C., Schneps, J., Schreckenberger, A., Schreiner, P., Sharma, R., Sousa, A., Strait, M., Tagg, N., Talaga, R. L., Tavera, M. A., Thomas, J., Thomson, M. A., Tinti, G., Toner, R., Torretta, D., Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Walding, J. J., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., Yang, T., and Zwaska, R.

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, FOS: Physical sciences, NuMI, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), MINOS, Antimatter, Fermilab, Neutrino, Charged current, Lepton
Abstract

We report constraints on antineutrino oscillation parameters that were obtained by using the two MINOS detectors to measure the 7% muon antineutrino component of the NuMI neutrino beam. In the Far Detector, we select 130 events in the charged-current muon antineutrino sample, compared to a prediction of 136.4 +/- 11.7(stat) ^{+10.2}_{-8.9}(syst) events under the assumption |dm2bar|=2.32x10^-3 eV^2, snthetabar=1.0. Assuming no oscillations occur at the Near Detector baseline, a fit to the two-flavor oscillation approximation constrains |dm2bar, Accepted for publication by Phys. Rev. D Rapid Communications. 6 pages, 4 figures

Published
2011

3. Measurement of the Neutrino Mass Splitting and Flavor Mixing by MINOS

Author

Adamson, P., Andreopoulos, C., Armstrong, R., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Cavanaugh, S., Cherdack, D., Childress, S., Choudhary, B. C., Coelho, J. A. B., Coleman, S. J., Corwin, L., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, G. J., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Graf, N., Gran, R., Grant, N., Grzelak, K., Habig, A., Harris, D., Hartnell, J., Hatcher, R., Himmel, A., Holin, A., Huang, X., Hylen, J., Ilic, 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., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Litchfield, R. P., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mayer, N., McGowan, A. M., Mehdiyev, R., Meier, J. R., Messier, M. D., Michael, D. G., Miller, W. H., Mishra, S. R., Mitchell, J., Moore, C. D., Moffin, J., Mualem, L., Mufson, S., Musser, J., Naples, D., Nelson, J. K., Newman, H. B., Nichol, R. J., Nowak, J. A., Oliver, W. P., Orchanian, M., Ospanov, R., Paley, J., Patterson, R. B., Pawloski, G., Pearce, G. F., Petyt, D. A., Phan-Budd, S., Plunkett, R. K., Qiu, X., Ratchford, J., Raufer, T. M., Rebel, B., Rodrigues, P. A., Rosenfeld, C., Rubin, H. A., Sanchez, M. C., Schneps, J., Schreiner, P., Shanahan, P., 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., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., Yang, T., Zwaska, R., and MINOS, Collaboration

Subjects
Physics, Particle physics, Physics::Instrumentation and Detectors, Solar neutrino, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, Solar neutrino problem, LEPTON CHARGE, NuMI, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), MINOS, Measurements of neutrino speed, High Energy Physics::Experiment, Neutrino, Neutrino oscillation, Lepton
Abstract

Measurements of neutrino oscillations using the disappearance of muon neutrinos from the Fermilab NuMI neutrino beam as observed by the two MINOS detectors are reported. New analysis methods have been applied to an enlarged data sample from an exposure of $7.25 \times 10^{20}$ protons on target. A fit to neutrino oscillations yields values of $|\Delta m^2| = (2.32^{+0.12}_{-0.08})\times10^{-3}$\,eV$^2$ for the atmospheric mass splitting and $\rm \sin^2\!(2\theta) > 0.90$ (90%\,C.L.) for the mixing angle. Pure neutrino decay and quantum decoherence hypotheses are excluded at 7 and 9 standard deviations, respectively., Comment: 5 pages, 4 figures

Published
2011

4. Improved search for muon-neutrino to electron-neutrino oscillations in MINOS

Author

MINOS Collaboration, Adamson, P., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Betancourt, M., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Cao, S. V., Cavanaugh, S., Cherdack, D., Childress, S., Coelho, J. A. B., Corwin, L., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, G. J., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Graf, N., Gran, R., Grzelak, K., Habig, A., Hartnell, J., Hatcher, R., 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., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mathis, M., Mayer, N., McGowan, A. M., Mehdiyev, R., Meier, J. R., Messier, M. D., Michael, D. G., Miller, W. H., Mishra, S. R., Mitchell, J., Moore, C. D., Mualem, L., Mufson, S., Musser, J., Naples, D., Nelson, J. K., Newman, H. B., Nichol, R. J., Nowak, J. A., Ochoa-Ricoux, J. P., Oliver, W. P., Orchanian, M., Paley, J., Patterson, R. B., Pawloski, G., Pearce, G. F., Phan-Budd, S., Plunkett, R. K., Qiu, X., Ratchford, J., Rebel, B., Rosenfeld, C., Rubin, H. A., Sanchez, M. C., Schneps, J., Schreckenberger, A., Schreiner, P., Shanahan, P., Sharma, R., Sousa, A., Tagg, N., Talaga, R. L., Thomas, J., Thomson, M. A., Toner, R., Torretta, D., Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Walding, J. J., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., Yang, T., and Zwaska, R.

Subjects
NOνA, Physics, Particle physics, General Physics and Astronomy, FOS: Physical sciences, NuMI, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), MINOS, Muon neutrino, Fermilab, Neutrino, Neutrino oscillation, Lepton
Abstract

We report the results of a search for $\nu_{e}$ appearance in a $\nu_{\mu}$ beam in the MINOS long-baseline neutrino experiment. With an improved analysis and an increased exposure of $8.2\times10^{20}$ protons on the NuMI target at Fermilab, we find that $2\sin^2(\theta_{23})\sin^2(2\theta_{13}), Comment: 5 pages, 3 figures

Published
2011
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5. Measurement of the underground atmospheric muon charge ratio using the MINOS Near Detector

Author

Adamson, P., Andreopoulos, C., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Barrett, W. L., Bhattarai, P., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Budd, S., Cavanaugh, S., Cherdack, D., Childress, S., Choudhary, B. C., Coelho, J. A. B., Coleman, S. J., Corwin, L., Cronin-Hennessy, D., Damiani, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, Gary J., Fields, T. H., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Graf, N., Gran, R., Grant, N., Grzelak, K., Habig, A., Harris, D., Harris, P. G., Hartnell, J., Hatcher, R., Himmel, A., Holin, A., Huang, X., Hylen, J., Ilic, 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., Krahn, Z., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mayer, N., McGowan, A. M., Mehdiyev, R., Meier, J. R., Messier, M. D., 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., Nowak, J. A., Oliver, W. P., Orchanian, M., Paley, J., Patterson, R. B., Pawloski, G., Pearce, G. F., Pittam, R., Plunkett, R. K., Qiu, X., Ratchford, J., Raufer, T. M., Rebel, B., Reichenbacher, J., Rodrigues, P. A., Rosenfeld, C., Rubin, H. A., Ryabov, V. A., Sanchez, M. C., Saoulidou, N., Schneps, J., Schreiner, P., Shanahan, P., Sousa, A., Strait, M., Tagg, N., Talaga, R. L., Thomas, J., Thomson, M. A., Tinti, G., Toner, Ruth, Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., Wright, D. M., Yang, T., and Zwaska, R.

Subjects
muon: atmosphere, charge: ratio: measured, K: decay, MINOS, near detector, muon+ muon-: ratio, muon: energy, position dependence, experimental results
Abstract

The magnetized MINOS Near Detector, at a depth of 225 mwe, is used to measure the atmospheric muon charge ratio. The ratio of observed positive to negative atmospheric muon rates, using 301 days of data, is measured to be 1.266±0.001(stat)+0.015−0.014(syst). This measurement is consistent with previous results from other shallow underground detectors and is 0.108±0.019(stat+syst) lower than the measurement at the functionally identical MINOS Far Detector at a depth of 2070 mwe. This increase in charge ratio as a function of depth is consistent with an increase in the fraction of muons arising from kaon decay for increasing muon surface energies., Physics

Published
2011
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6. First Direct Observation of Muon Antineutrino Disappearance

Author

Adamson, P., Andreopoulos, C., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Cavanaugh, S., Cherdack, D., Childress, S., Choudhary, B. C., Coelho, J. A. B., Coleman, S. J., Corwin, L., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, Gary J., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Graf, N., Gran, R., Grant, N., Grzelak, K., Habig, A., Harris, D., Hartnell, J., Hatcher, R., Himmel, A., Holin, A., Howcroft, C., Huang, X., Hylen, J., Ilic, 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., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mayer, N., McGowan, A. M., Mehdiyev, R., Meier, J. R., Messier, M. D., 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., Nowak, J. A., Ochoa-Ricoux, J. P., Oliver, W. P., Orchanian, M., Ospanov, R., Paley, J., Patterson, R. B., Pawloski, G., Pearce, G. F., Petyt, D. A., Phan-Budd, S., Plunkett, R. K., Qiu, X., Ratchford, J., Raufer, T. M., Rebel, B., Rodrigues, P. A., Rosenfeld, C., Rubin, H. A., Sanchez, M. C., Schneps, J., Schreiner, P., Shanahan, P., Sousa, A., Stamoulis, P., Strait, M., Tagg, N., Talaga, R. L., Tetteh-Lartey, E., Thomas, J., Thomson, M. A., Tinti, G., Toner, R., Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., Yang, T., and Zwaska, R.

Subjects
antineutrino/mu: secondary beam, MINOS, antineutrino nucleon: interaction, charged current, neutrino: oscillation, far detector, antineutrino/mu: energy spectrum, antineutrino: mass difference, antineutrino: mixing angle, experimental results
Abstract

This Letter reports the first direct observation of muon antineutrino disappearance. The MINOS experiment has taken data with an accelerator beam optimized for ν⎯⎯μ production, accumulating an exposure of 1.71×1020 protons on target. In the Far Detector, 97 charged current ν⎯⎯μ events are observed. The no-oscillation hypothesis predicts 156 events and is excluded at 6.3σ. The best fit to oscillation yields |Δm⎯⎯⎯2|=[3.36+0.46−0.40(stat)±0.06(syst)]×10−3 eV2, sin 2(2θ⎯⎯)=0.86+0.11−0.12(stat)±0.01(syst). The MINOS νμ and ν⎯⎯μ measurements are consistent at the 2.0% confidence level, assuming identical underlying oscillation parameters., Physics

Published
2011
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7. Active to Sterile Neutrino Mixing Limits from Neutral-Current Interactions in MINOS

Author

Adamson, P., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Cavanaugh, S., Cherdack, D., Childress, S., Coelho, J. A. B., Coleman, S. J., Corwin, L., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, Gary J., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Graf, N., Gran, R., Grant, N., Grzelak, K., Habig, A., Harris, D., Hartnell, J., Hatcher, R., Himmel, A., Holin, A., Huang, X., Hylen, J., Ilic, 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., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mayer, N., McGowan, A. M., Mehdiyev, R., Meier, J. R., Messier, M. D., 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., Nowak, J. A., Oliver, W. P., Orchanian, M., Paley, J., Patterson, R. B., Pawloski, G., Pearce, G. F., Petyt, D. A., Phan-Budd, S., Pittam, R., Plunkett, R. K., Qiu, X., Ratchford, J., Raufer, T. M., Rebel, B., Rodrigues, P. A., Rosenfeld, C., Rubin, H. A., Sanchez, M. C., Schneps, J., Schreiner, P., Sharma, R., Shanahan, P., Sousa, A., Stamoulis, P., Strait, M., Tagg, N., Talaga, R. L., Tetteh-Lartey, E., Thomas, J., Thomson, M. A., Tinti, G., Toner, R., Torretta, D., Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Walding, J. J., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., and Zwaska, R.

Subjects
neutrino: sterile, neutrino: oscillation, neutrino: mixing, neutrino: secondary beam, neutral current, far detector, MINOS, flavor: 3, neutrino: interaction, neutrino: energy spectrum, mass: hierarchy, Soudan, experimental results
Abstract

Results are reported from a search for active to sterile neutrino oscillations in the MINOS long-baseline experiment, based on the observation of neutral-current neutrino interactions, from an exposure to the NuMI neutrino beam of 7.07×10207.07×1020 protons on target. A total of 802 neutral-current event candidates is observed in the Far Detector, compared to an expected number of 754±28(stat.)±37(syst.)754±28(stat.)±37(syst.) for oscillations among three active flavors. The fraction fsfs of disappearing \numu that may transition to νsνs is found to be less than 22% at the 90% C.L., Physics

Published
2011
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8. Search for the disappearance of muon antineutrinos in the NuMI neutrino beam

Author

Adamson, P., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Cao, S. V., Cavanaugh, S., Cherdack, D., Childress, S., Choudhary, B. C., Coelho, J. A. B., Coleman, S. J., Corwin, L., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, Gary J., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Graf, N., Gran, R., Grant, N., Grzelak, K., Habig, A., Hartnell, J., Hatcher, R., Himmel, A., Holin, A., Howcroft, C., 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., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mathis, M., Mayer, N., Mehdiyev, R., Meier, J. R., Messier, M. D., Michael, D. G., Miller, W. H., Mishra, S. R., Mitchell, J., Moore, C. D., Mualem, L., Mufson, S., Musser, J., Naples, D., Nelson, J. K., Newman, H. B., Nichol, R. J., Nowak, J. A., Ochoa-Ricoux, J. P., Oliver, W. P., Orchanian, M., Pahlka, R., Paley, J., Patterson, R. B., Pawloski, G., Pearce, G. F., Phan-Budd, S., Plunkett, R. K., Qiu, X., Ratchford, J., Rebel, B., Rosenfeld, C., Rubin, H. A., Sanchez, M. C., Schneps, J., Schreckenberger, A., Schreiner, P., Sharma, R., Sousa, A., Strait, M., Tagg, N., Talaga, R. L., Tavera, M. A., Thomas, J., Thomson, M. A., Tinti, G., Toner, R., Torretta, D., Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Walding, J. J., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., Yang, T., and Zwaska, R.

Subjects
antineutrino: oscillation, neutrino: beam, antineutrino/mu: admixture, charged current, MINOS, experimental results, Fermilab, antineutrino nucleon: interaction, antineutrino/mu: flux, antineutrino/mu: path length, antineutrino/mu: energy spectrum, antineutrino: mass difference, antineutrino: mixing angle
Abstract

We report constraints on antineutrino oscillation parameters that were obtained by using the two MINOS detectors to measure the 7% muon antineutrino component of the NuMI neutrino beam. In the Far Detector, we select 130 events in the charged-current muon antineutrino sample, compared to a prediction of 136.4±11.7(stat)+10.2−8.9(syst) events under the assumption |Δm⎯⎯⎯2|=2.32×10−3 eV2, sin 2(2θ⎯⎯)=1.0. Assuming no oscillations occur at the Near Detector baseline, a fit to the two-flavor oscillation approximation constrains |Δm⎯⎯⎯2|<3.37×10−3 eV2 at the 90% confidence level with sin 2(2θ⎯⎯)=1.0., Physics

Published
2011
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9. Neutrino and antineutrino inclusive charged-current cross section measurements with the MINOS near detector

Author

Adamson, P., Andreopoulos, C., Arms, K. E., Armstrong, R., Auty, D. J., Ayres, D. S., Backhouse, C., Barnes, P. D., Barr, G., Barrett, W. L., Bhattacharya, D., 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., Coleman, S. J., 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, Gary 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., Hylen, J., Irwin, G. M., Isvan, Z., Jaffe, D. E., James, C., Jensen, D., Kafka, T., Kasahara, S. M. S., Kim, J. J., 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., 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., Osiecki, T., Ospanov, R., Paley, J., Paolone, V., Patterson, R. B., Pavlović, Ž., Pawloski, G., Pearce, G. F., Petyt, D. A., 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., Semenov, V. K., 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, Ruth, Tsarev, V. A., 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., Zois, M., Zhang, K., and Zwaska, R.

Subjects
neutrino nucleus: inclusive reaction, antineutrino nucleus: inclusive reaction, iron, charged current, neutrino/mu: secondary beam, neutrino/mu: flux, cross section: energy dependence, cross section: ratio, MINOS, near detector, Fermilab, 3-50 GeV, OSG : MINOS
Abstract

The energy dependence of the neutrino-iron and antineutrino-iron inclusive charged-current cross sections and their ratio have been measured using a high-statistics sample with the MINOS near detector exposed to the NuMI beam from the main injector at Fermilab. Neutrino and antineutrino fluxes were determined using a low hadronic energy subsample of charged-current events. We report measurements of ν−Fe (ν⎯⎯−Fe) cross section in the energy range 3–50 GeV (5–50 GeV) with precision of 2%–8% (3%–9%) and their ratio which is measured with precision 2%–8%. The data set spans the region from low energy, where accurate measurements are sparse, up to the high-energy scaling region where the cross section is well understood., Physics

Published
2010
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10. New constraints on muon-neutrino to electron-neutrino transitions in MINOS

Author

Adamson, P., Andreopoulos, C., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Bernstein, R. H., Betancourt, M., Bhattarai, P., Bishai, M., Blake, A., Bock, G. J., Boehm, J., Boehnlein, D. J., Bogert, D., Bower, C., Budd, S., Cavanaugh, S., Cherdack, D., Childress, S., Choudhary, B. C., Cobb, J. H., Coelho, J. A. B., Coleman, S. J., Corwin, L., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, Gary J., Frohne, M. V., Gallagher, H. R., Godley, A., Goodman, M. C., Gouffon, P., Graf, N., 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., Ilic, 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., Krahn, Z., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Litchfield, R. P., Loiacono, L., Lucas, P., Ma, J., Mann, W. A., Marshak, M. L., Marshall, J. S., Mayer, N., McGowan, A. M., Mehdiyev, R., Meier, J. R., Messier, M. D., 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., Ochoa-Ricoux, J. P., Oliver, W. P., Orchanian, M., Ospanov, R., Paley, J., Para, A., Patterson, R. B., Pawloski, G., Pearce, G. F., Petyt, D. A., Pittam, R., Plunkett, R. K., Rameika, R. A., Raufer, T. M., Rebel, B., Rodrigues, P. A., Rosenfeld, C., Rubin, H. A., Ryabov, V. A., Sanchez, M. C., Schneps, J., Schreiner, P., Shanahan, P., Smart, W., Smith, C., Sousa, A., Strait, M., Swain, S., Tagg, N., Talaga, R. L., Thomas, J., Thomson, M. A., Tinti, G., Toner, Ruth, Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., Wright, D. M., Yang, T., Zhang, K., Zois, M., and Zwaska, R.

Subjects
mass: hierarchy, neutrino: mass difference, CP: violation, MINOS, experimental results, Fermilab, neutrino/mu: secondary beam, neutrino: oscillation, neutrino/e: particle identification, neutrino: mixing angle, background
Abstract

This paper reports results from a search for νμ→νe transitions by the MINOS experiment based on a 7×1020 protons-on-target exposure. Our observation of 54 candidate νe events in the far detector with a background of 49.1±7.0(stat)±2.7(syst) events predicted by the measurements in the near detector requires 2sin 2(2θ13)sin 2θ23<0.12(0.20) at the 90% C.L. for the normal (inverted) mass hierarchy at δCP=0. The experiment sets the tightest limits to date on the value of θ13 for nearly all values of δCP for the normal neutrino mass hierarchy and maximal sin 2(2θ23)., Physics

Published
2010
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11. Search for sterile neutrino mixing in the MINOS long-baseline experiment

Author

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, Gary 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, Ruth, 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., and Zwaska, R.

Subjects
neutrino: sterile, neutrino: decay, neutrino: oscillation, neutrino: mixing, neutrino: flavor, neutrino/mu: secondary beam, neutrino nucleon: interaction, neutral current, neutrino: flux, neutrino: energy spectrum, far detector, MINOS, neutrino: lifetime, lifetime: lower limit, Fermilab, OSG : MINOS
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 non-interacting "sterile" neutrinos, scenarios not ruled out by existing data. From an exposure of 3.18x10^{20} protons on target in which neutrinos of energies between ~500 MeV and 120 GeV are produced predominantly as nu_mu, 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 nu_mu 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 theta_{24} and theta_{34} are constrained to be less than 11 degrees and 56 degrees 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 tau_3/m_3 > 2.1x10^{-12} s/eV at 90% C.L.., Physics

Published
2010
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12. Search for Lorentz Invariance and CPT Violation with the MINOS Far Detector

Author

Adamson, P., Auty, D. J., Ayres, D. S., Backhouse, C., Barr, G., Barrett, W. L., Bishai, M., Blake, A., Bock, G. J., Boehnlein, D. J., Bogert, D., Bower, C., Budd, S., Cavanaugh, S., Cherdack, D., Childress, S., Choudhary, B. C., Coelho, J. A. B., Cobb, J. H., Coleman, S. J., Corwin, L., Cravens, J. P., Cronin-Hennessy, D., Danko, I. Z., de Jong, J. K., Devenish, N. E., Diwan, M. V., Dorman, M., Escobar, C. O., Evans, J. J., Falk, E., Feldman, Gary J., Frohne, M. V., Gallagher, H. R., Gomes, R. A., Goodman, M. C., Gouffon, P., Gran, R., Grant, N., Grzelak, K., Habig, A., Harris, D., Harris, P. G., Hartnell, J., Hatcher, R., Himmel, A., Holin, A., Huang, X., Hylen, J., Ilic, 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., Krahn, Z., Kreymer, A., Lang, K., Lefeuvre, G., Ling, J., Litchfield, P. J., Loiacono, L., Lucas, P., Mann, W. A., Marshak, M. L., Mayer, N., McGowan, A. M., Mehdiyev, R., Meier, J. R., Messier, M. D., Michael, D. G., Miller, J. L., Miller, W. H., Mishra, S. R., Mitchell, J., Moore, C. D., Mualem, L., Mufson, S., Musser, J., Naples, D., Nelson, J. K., Newman, H. B., Nichol, R. J., Oliver, W. P., Orchanian, M., Paley, J., Patterson, R. B., Patzak, T., Pawloski, G., Pearce, G. F., Pittam, R., Plunkett, R. K., Ratchford, J., 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., Semenov, V. K., Shanahan, P., Smart, W., Sousa, A., Strait, M., Tagg, N., Talaga, R. L., Thomas, J., Thomson, M. A., Tinti, G., Toner, Ruth, Tzanakos, G., Urheim, J., Vahle, P., Viren, B., Weber, A., Webb, R. C., White, C., Whitehead, L., Wojcicki, S. G., Wright, D. M., Yang, T., Zois, M., and Zwaska, R.

Subjects
CPT: violation, violation: Lorentz, neutrino: oscillation, MINOS, modulation, signature, perturbation: effect, experimental results, Fermilab, upper limit, neutrino/mu: beam, neutrino/tau
Abstract

We searched for a sidereal modulation in the MINOS far detector neutrino rate. Such a signal would be a consequence of Lorentz and CPT violation as described by the standard-model extension framework. It also would be the first detection of a perturbative effect to conventional neutrino mass oscillations. We found no evidence for this sidereal signature, and the upper limits placed on the magnitudes of the Lorentz and CPT violating coefficients describing the theory are an improvement by factors of 20–510 over the current best limits found by using the MINOS near detector., Physics

Published
2010
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