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4 results on '"Barrett, W. L"'

1. 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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2. 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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3. 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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4. 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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