@article{3148695,
    title = "Measurement of the underground atmospheric muon charge ratio using the
MINOS Near Detector",
    author = "Adamson, P. and Andreopoulos, C. and Auty, D. J. and Ayres, D. S. and and Backhouse, C. and Barr, G. and Barrett, W. L. and Bhattarai, P. and and Bishai, M. and Blake, A. and Bock, G. J. and Boehnlein, D. J. and and Bogert, D. and Budd, S. and Cavanaugh, S. and Cherdack, D. and and Childress, S. and Choudhary, B. C. and Coelho, J. A. B. and Coleman, S. and J. and Corwin, L. and Cronin-Hennessy, D. and Damiani, D. and Danko, I. and Z. and de Jong, J. K. and Devenish, N. E. and Diwan, M. V. and Dorman, and M. and Escobar, C. O. and Evans, J. J. and Falk, E. and Feldman, G. J. and and Fields, T. H. and Frohne, M. V. and Gallagher, H. R. and Gomes, R. and A. and Goodman, M. C. and Gouffon, P. and Graf, N. and Gran, R. and and Grant, N. and Grzelak, K. and Habig, A. and Harris, D. and Harris, P. G. and and Hartnell, J. and Hatcher, R. and Himmel, A. and Holin, A. and Huang, and X. and Hylen, J. and Ilic, J. and Irwin, G. M. and Isvan, Z. and Jaffe, and D. E. and James, C. and Jensen, D. and Kafka, T. and Kasahara, S. M. S. and and Koizumi, G. and Kopp, S. and Kordosky, M. and Krahn, Z. and Kreymer, and A. and Lang, K. and Lefeuvre, G. and Ling, J. and Litchfield, P. J. and and Loiacono, L. and Lucas, P. and Mann, W. A. and Marshak, M. L. and Mayer, and N. and McGowan, A. M. and Mehdiyev, R. and Meier, J. R. and Messier, M. and D. and Michael, D. G. and Miller, W. H. and Mishra, S. R. and Mitchell, and J. and Moore, C. D. and Morfin, J. and Mualem, L. and Mufson, S. and and Musser, J. and Naples, D. and Nelson, J. K. and Newman, H. B. and and Nichol, R. J. and Nowak, J. A. and Oliver, W. P. and Orchanian, M. and and Paley, J. and Patterson, R. B. and Pawloski, G. and Pearce, G. F. and and Pittam, R. and Plunkett, R. K. and Qiu, X. and Ratchford, J. and Raufer, and T. M. and Rebel, B. and Reichenbacher, J. and Rodrigues, P. A. and and Rosenfeld, C. and Rubin, H. A. and Ryabov, V. A. and Sanchez, M. C. and and Saoulidou, N. and Schneps, J. and Schreiner, P. and Shanahan, P. and and Sousa, A. and Strait, M. and Tagg, N. and Talaga, R. L. and Thomas, J. and and Thomson, M. A. and Tinti, G. and Toner, R. and Tzanakos, G. and and Urheim, J. and Vahle, P. and Viren, B. and Weber, A. and Webb, R. C. and and White, C. and Whitehead, L. and Wojcicki, S. G. and Wright, D. M. and and Yang, T. and Zwaska, R.",
    journal = "Physical Review D",
    year = "2011",
    volume = "83",
    number = "3",
    publisher = "AMER PHYSICAL SOC",
    issn = "2470-0010, 2470-0029",
    doi = "10.1103/PhysRevD.83.032011",
    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)(-0.014)(+0.015)(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."
}