Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector

P. Adamson; C. Andreopoulos; K. E. Arms; R. Armstrong; D. J. Auty; S. Avvakumov; D. S. Ayres; B. Baller; B. Barish; P. D. Barnes; G. Barr; W. L. Barrett; E. Beall; B. R. Becker; A. Belias; T. Bergfeld; R. H. Bernstein; D. Bhattacharya; M. Bishai; A. Blake; B. Bock; G. J. Bock; J. Boehm; D. J. Boehnlein; D. Bogert; P. M. Border; C. Bower; E. Buckley-Geer; C. Bungau; A. Cabrera; J. D. Chapman; D. Cherdack; S. Childress; B. C. Choudhary; J. H. Cobb; A. J. Culling; J. K. De Jong; A. De Santo; M. Dierckxsens; M. V. Diwan; M. Dorman; D. Drakoulakos; T. Durkin; A. R. Erwin; C. O. Escobar; J. J. Evans; E. Falk Harris; G. J. Feldman; T. H. Fields; R. Ford; M. V. Frohne; H. R. Gallagher; G. A. Giurgiu; A. Godley; J. Gogos; M. C. Goodman; P. Gouffon; R. Gran; E. W. Grashorn; N. Grossman; K. Grzelak; A. Habig; D. Harris; P. G. Harris; J. Hartnell; E. P. Hartouni; R. Hatcher; K. Heller; A. Holin; C. Howcroft; J. Hylen; D. Indurthy; G. M. Irwin; M. Ishitsuka; D. E. Jaffe; C. James; L. Jenner; D. Jensen; T. Joffe-Minor; T. Kafka; H. J. Kang; S. M.S. Kasahara; M. S. Kim; G. Koizumi; S. Kopp; M. Kordosky; D. J. Koskinen; S. K. Kotelnikov; A. Kreymer; S. Kumaratunga; K. Lang; A. Lebedev; R. Lee; J. Ling; J. Liu; P. J. Litchfield; R. P. Litchfield; P. Lucas; W. A. Mann; A. Marchionni; A. D. Marino; M. L. Marshak; J. S. Marshall; N. Mayer; A. M. McGowan; J. R. Meier; G. I. Merzon; M. D. Messier; D. G. Michael; R. H. Milburn; J. L. Miller; W. H. Miller; S. R. Mishra; A. Mislivec; P. S. Miyagawa; C. D. Moore; J. Morfín; L. Mualem; S. Mufson; S. Murgia; J. Musser; D. Naples; J. K. Nelson; H. B. Newman; R. J. Nichol; T. C. Nicholls; J. P. Ochoa-Ricoux; W. P. Oliver; T. Osiecki; R. Ospanov; J. Paley; V. Paolone; A. Para; T. Patzak; Ž Pavlović; G. F. Pearce; C. W. Peck; E. A. Peterson; D. A. Petyt; H. Ping; R. Piteira; R. Pittam; R. K. Plunkett; D. Rahman; R. A. Rameika; T. M. Raufer; B. Rebel; J. Reichenbacher; D. E. Reyna; C. Rosenfeld; H. A. Rubin; K. Ruddick; V. A. Ryabov; R. Saakyan; M. C. Sanchez; N. Saoulidou; J. Schneps; P. Schreiner; V. K. Semenov; S. M. Seun; P. Shanahan; W. Smart; V. Smirnitsky; C. Smith; A. Sousa; B. Speakman; P. Stamoulis; P. A. Symes; N. Tagg; R. L. Talaga; E. Tetteh-Lartey; J. Thomas; J. Thompson; M. A. Thomson; J. L. Thron; G. Tinti; I. Trostin; V. A. Tsarev; G. Tzanakos; J. Urheim; P. Vahle; C. Velissaris; V. Verebryusov; B. Viren; C. P. Ward; D. R. Ward; M. Watabe; A. Weber; R. C. Webb; A. Wehmann; N. West; C. White; S. G. Wojcicki; D. M. Wright; Q. K. Wu; T. Yang; F. X. Yumiceva; H. Zheng; M. Zois; R. Zwaska

doi:10.1103/PhysRevD.76.052003

Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector

P. Adamson, C. Andreopoulos, K. E. Arms, R. Armstrong, D. J. Auty, S. Avvakumov, D. S. Ayres, B. Baller, B. Barish, P. D. Barnes, G. Barr, W. L. Barrett, E. Beall, B. R. Becker, A. Belias, T. Bergfeld, R. H. Bernstein, D. Bhattacharya, M. Bishai, A. BlakeB. Bock, G. J. Bock, J. Boehm, D. J. Boehnlein, D. Bogert, P. M. Border, C. Bower, E. Buckley-Geer, C. Bungau, A. Cabrera, J. D. Chapman, D. Cherdack, S. Childress, B. C. Choudhary, J. H. Cobb, A. J. Culling, J. K. De Jong, A. De Santo, M. Dierckxsens, M. V. Diwan, M. Dorman, D. Drakoulakos, T. Durkin, A. R. Erwin, C. O. Escobar, J. J. Evans, E. Falk Harris, G. J. Feldman, T. H. Fields, R. Ford, M. V. Frohne, H. R. Gallagher, G. A. Giurgiu, A. Godley, J. Gogos, M. C. Goodman, P. Gouffon, R. Gran, E. W. Grashorn, N. Grossman, K. Grzelak, A. Habig, D. Harris, P. G. Harris, J. Hartnell, E. P. Hartouni, R. Hatcher, K. Heller, A. Holin, C. Howcroft, J. Hylen, D. Indurthy, G. M. Irwin, M. Ishitsuka, D. E. Jaffe, C. James, L. Jenner, D. Jensen, T. Joffe-Minor, T. Kafka, H. J. Kang, S. M.S. Kasahara, M. S. Kim, G. Koizumi, S. Kopp, M. Kordosky, D. J. Koskinen, S. K. Kotelnikov, A. Kreymer, S. Kumaratunga, K. Lang, A. Lebedev, R. Lee, J. Ling, J. Liu, P. J. Litchfield, R. P. Litchfield, P. Lucas, W. A. Mann, A. Marchionni, A. D. Marino, M. L. Marshak, J. S. Marshall, N. Mayer, A. M. McGowan, J. R. Meier, G. I. Merzon, M. D. Messier, D. G. Michael, R. H. Milburn, J. L. Miller, W. H. Miller, S. R. Mishra, A. Mislivec, P. S. Miyagawa, C. D. Moore, J. Morfín, L. Mualem, S. Mufson, S. Murgia, J. Musser, D. Naples, J. K. Nelson, H. B. Newman, R. J. Nichol, T. C. Nicholls, J. P. Ochoa-Ricoux, W. P. Oliver, T. Osiecki, R. Ospanov, J. Paley, V. Paolone, A. Para, T. Patzak, Ž Pavlović, G. F. Pearce, C. W. Peck, E. A. Peterson, D. A. Petyt, H. Ping, R. Piteira, R. Pittam, R. K. Plunkett, D. Rahman, R. A. Rameika, T. M. Raufer, B. Rebel, J. Reichenbacher, D. E. Reyna, C. Rosenfeld, H. A. Rubin, K. Ruddick, V. A. Ryabov, R. Saakyan, M. C. Sanchez, N. Saoulidou, J. Schneps, P. Schreiner, V. K. Semenov, S. M. Seun, P. Shanahan, W. Smart, V. Smirnitsky, C. Smith, A. Sousa, B. Speakman, P. Stamoulis, P. A. Symes, N. Tagg, R. L. Talaga, E. Tetteh-Lartey, J. Thomas, J. Thompson, M. A. Thomson, J. L. Thron, G. Tinti, I. Trostin, V. A. Tsarev, G. Tzanakos, J. Urheim, P. Vahle, C. Velissaris, V. Verebryusov, B. Viren, C. P. Ward, D. R. Ward, M. Watabe, A. Weber, R. C. Webb, A. Wehmann, N. West, C. White, S. G. Wojcicki, D. M. Wright, Q. K. Wu, T. Yang, F. X. Yumiceva, H. Zheng, M. Zois, R. Zwaska

Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

The 5.4 kton MINOS far detector has been taking charge-separated cosmic ray muon data since the beginning of August, 2003 at a depth of 207 m.w.e. in the Soudan Underground Laboratory, Minnesota, USA. The data with both forward and reversed magnetic field running configurations were combined to minimize systematic errors in the determination of the underground muon charge ratio. When averaged, two independent analyses find the charge ratio underground to be Nμ+/Nμ-=1.374±0.004(stat)-0.010+0.012(sys). Using the map of the Soudan rock overburden, the muon momenta as measured underground were projected to the corresponding values at the surface in the energy range 1-7 TeV. Within this range of energies at the surface, the MINOS data are consistent with the charge ratio being energy independent at the 2 standard deviation level. When the MINOS results are compared with measurements at lower energies, a clear rise in the charge ratio in the energy range 0.3-1.0 TeV is apparent. A qualitative model shows that the rise is consistent with an increasing contribution of kaon decays to the muon charge ratio.

Original language	English (US)
Article number	052003
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	76
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.76.052003
State	Published - Sep 20 2007
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

Access to Document

10.1103/PhysRevD.76.052003

Cite this

Adamson, P., Andreopoulos, C., Arms, K. E., Armstrong, R., Auty, D. J., Avvakumov, S., Ayres, D. S., Baller, B., Barish, B., Barnes, P. D., Barr, G., Barrett, W. L., Beall, E., Becker, B. R., Belias, A., Bergfeld, T., Bernstein, R. H., Bhattacharya, D., Bishai, M., ... Zwaska, R. (2007). Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector. Physical Review D - Particles, Fields, Gravitation and Cosmology, 76(5), [052003]. https://doi.org/10.1103/PhysRevD.76.052003

Adamson, P, Andreopoulos, C, Arms, KE, Armstrong, R, Auty, DJ, Avvakumov, S, Ayres, DS, Baller, B, Barish, B, Barnes, PD, Barr, G, Barrett, WL, Beall, E, Becker, BR, Belias, A, Bergfeld, T, Bernstein, RH, Bhattacharya, D, Bishai, M, Blake, A, Bock, B, Bock, GJ, Boehm, J, Boehnlein, DJ, Bogert, D, Border, PM, Bower, C, Buckley-Geer, E, Bungau, C, Cabrera, A, Chapman, JD, Cherdack, D, Childress, S, Choudhary, BC, Cobb, JH, Culling, AJ, De Jong, JK, De Santo, A, Dierckxsens, M, Diwan, MV, Dorman, M, Drakoulakos, D, Durkin, T, Erwin, AR, Escobar, CO, Evans, JJ, Harris, EF, Feldman, GJ, Fields, TH, Ford, R, Frohne, MV, Gallagher, HR, Giurgiu, GA, Godley, A, Gogos, J, Goodman, MC, Gouffon, P, Gran, R, Grashorn, EW, Grossman, N, Grzelak, K, Habig, A, Harris, D, Harris, PG, Hartnell, J, Hartouni, EP, Hatcher, R, Heller, K, Holin, A, Howcroft, C, Hylen, J, Indurthy, D, Irwin, GM, Ishitsuka, M, Jaffe, DE, James, C, Jenner, L, Jensen, D, Joffe-Minor, T, Kafka, T, Kang, HJ, Kasahara, SMS, Kim, MS, Koizumi, G, Kopp, S, Kordosky, M, Koskinen, DJ, Kotelnikov, SK, Kreymer, A, Kumaratunga, S, Lang, K, Lebedev, A, Lee, R, Ling, J, Liu, J, Litchfield, PJ, Litchfield, RP, Lucas, P, Mann, WA, Marchionni, A, Marino, AD, Marshak, ML, Marshall, JS, Mayer, N, McGowan, AM, Meier, JR, Merzon, GI, Messier, MD, Michael, DG, Milburn, RH, Miller, JL, Miller, WH, Mishra, SR, Mislivec, A, Miyagawa, PS, Moore, CD, Morfín, J, Mualem, L, Mufson, S, Murgia, S, Musser, J, Naples, D, Nelson, JK, Newman, HB, Nichol, RJ, Nicholls, TC, Ochoa-Ricoux, JP, Oliver, WP, Osiecki, T, Ospanov, R, Paley, J, Paolone, V, Para, A, Patzak, T, Pavlović, Ž, Pearce, GF, Peck, CW, Peterson, EA, Petyt, DA, Ping, H, Piteira, R, Pittam, R, Plunkett, RK, Rahman, D, Rameika, RA, Raufer, TM, Rebel, B, Reichenbacher, J, Reyna, DE, Rosenfeld, C, Rubin, HA, Ruddick, K, Ryabov, VA, Saakyan, R, Sanchez, MC, Saoulidou, N, Schneps, J, Schreiner, P, Semenov, VK, Seun, SM, Shanahan, P, Smart, W, Smirnitsky, V, Smith, C, Sousa, A, Speakman, B, Stamoulis, P, Symes, PA, Tagg, N, Talaga, RL, Tetteh-Lartey, E, Thomas, J, Thompson, J, Thomson, MA, Thron, JL, Tinti, G, Trostin, I, Tsarev, VA, Tzanakos, G, Urheim, J, Vahle, P, Velissaris, C, Verebryusov, V, Viren, B, Ward, CP, Ward, DR, Watabe, M, Weber, A, Webb, RC, Wehmann, A, West, N, White, C, Wojcicki, SG, Wright, DM, Wu, QK, Yang, T, Yumiceva, FX, Zheng, H, Zois, M & Zwaska, R 2007, 'Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 76, no. 5, 052003. https://doi.org/10.1103/PhysRevD.76.052003

@article{ecd81ac3991540019590a1ac3caa855d,

title = "Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector",

abstract = "The 5.4 kton MINOS far detector has been taking charge-separated cosmic ray muon data since the beginning of August, 2003 at a depth of 207 m.w.e. in the Soudan Underground Laboratory, Minnesota, USA. The data with both forward and reversed magnetic field running configurations were combined to minimize systematic errors in the determination of the underground muon charge ratio. When averaged, two independent analyses find the charge ratio underground to be Nμ+/Nμ-=1.374±0.004(stat)-0.010+0.012(sys). Using the map of the Soudan rock overburden, the muon momenta as measured underground were projected to the corresponding values at the surface in the energy range 1-7 TeV. Within this range of energies at the surface, the MINOS data are consistent with the charge ratio being energy independent at the 2 standard deviation level. When the MINOS results are compared with measurements at lower energies, a clear rise in the charge ratio in the energy range 0.3-1.0 TeV is apparent. A qualitative model shows that the rise is consistent with an increasing contribution of kaon decays to the muon charge ratio.",

author = "P. Adamson and C. Andreopoulos and Arms, {K. E.} and R. Armstrong and Auty, {D. J.} and S. Avvakumov and Ayres, {D. S.} and B. Baller and B. Barish and Barnes, {P. D.} and G. Barr and Barrett, {W. L.} and E. Beall and Becker, {B. R.} and A. Belias and T. Bergfeld and Bernstein, {R. H.} and D. Bhattacharya and M. Bishai and A. Blake and B. Bock and Bock, {G. J.} and J. Boehm and Boehnlein, {D. J.} and D. Bogert and Border, {P. M.} and C. Bower and E. Buckley-Geer and C. Bungau and A. Cabrera and Chapman, {J. D.} and D. Cherdack and S. Childress and Choudhary, {B. C.} and Cobb, {J. H.} and Culling, {A. J.} and {De Jong}, {J. K.} and {De Santo}, A. and M. Dierckxsens and Diwan, {M. V.} and M. Dorman and D. Drakoulakos and T. Durkin and Erwin, {A. R.} and Escobar, {C. O.} and Evans, {J. J.} and Harris, {E. Falk} and Feldman, {G. J.} and Fields, {T. H.} and R. Ford and Frohne, {M. V.} and Gallagher, {H. R.} and Giurgiu, {G. A.} and A. Godley and J. Gogos and Goodman, {M. C.} and P. Gouffon and R. Gran and Grashorn, {E. W.} and N. Grossman and K. Grzelak and A. Habig and D. Harris and Harris, {P. G.} and J. Hartnell and Hartouni, {E. P.} and R. Hatcher and K. Heller and A. Holin and C. Howcroft and J. Hylen and D. Indurthy and Irwin, {G. M.} and M. Ishitsuka and Jaffe, {D. E.} and C. James and L. Jenner and D. Jensen and T. Joffe-Minor and T. Kafka and Kang, {H. J.} and Kasahara, {S. M.S.} and Kim, {M. S.} and G. Koizumi and S. Kopp and M. Kordosky and Koskinen, {D. J.} and Kotelnikov, {S. K.} and A. Kreymer and S. Kumaratunga and K. Lang and A. Lebedev and R. Lee and J. Ling and J. Liu and Litchfield, {P. J.} and Litchfield, {R. P.} and P. Lucas and Mann, {W. A.} and A. Marchionni and Marino, {A. D.} and Marshak, {M. L.} and Marshall, {J. S.} and N. Mayer and McGowan, {A. M.} and Meier, {J. R.} and Merzon, {G. I.} and Messier, {M. D.} and Michael, {D. G.} and Milburn, {R. H.} and Miller, {J. L.} and Miller, {W. H.} and Mishra, {S. R.} and A. Mislivec and Miyagawa, {P. S.} and Moore, {C. D.} and J. Morf{\'i}n and L. Mualem and S. Mufson and S. Murgia and J. Musser and D. Naples and Nelson, {J. K.} and Newman, {H. B.} and Nichol, {R. J.} and Nicholls, {T. C.} and Ochoa-Ricoux, {J. P.} and Oliver, {W. P.} and T. Osiecki and R. Ospanov and J. Paley and V. Paolone and A. Para and T. Patzak and {\v Z} Pavlovi{\'c} and Pearce, {G. F.} and Peck, {C. W.} and Peterson, {E. A.} and Petyt, {D. A.} and H. Ping and R. Piteira and R. Pittam and Plunkett, {R. K.} and D. Rahman and Rameika, {R. A.} and Raufer, {T. M.} and B. Rebel and J. Reichenbacher and Reyna, {D. E.} and C. Rosenfeld and Rubin, {H. A.} and K. Ruddick and Ryabov, {V. A.} and R. Saakyan and Sanchez, {M. C.} and N. Saoulidou and J. Schneps and P. Schreiner and Semenov, {V. K.} and Seun, {S. M.} and P. Shanahan and W. Smart and V. Smirnitsky and C. Smith and A. Sousa and B. Speakman and P. Stamoulis and Symes, {P. A.} and N. Tagg and Talaga, {R. L.} and E. Tetteh-Lartey and J. Thomas and J. Thompson and Thomson, {M. A.} and Thron, {J. L.} and G. Tinti and I. Trostin and Tsarev, {V. A.} and G. Tzanakos and J. Urheim and P. Vahle and C. Velissaris and V. Verebryusov and B. Viren and Ward, {C. P.} and Ward, {D. R.} and M. Watabe and A. Weber and Webb, {R. C.} and A. Wehmann and N. West and C. White and Wojcicki, {S. G.} and Wright, {D. M.} and Wu, {Q. K.} and T. Yang and Yumiceva, {F. X.} and H. Zheng and M. Zois and R. Zwaska",

year = "2007",

month = sep,

day = "20",

doi = "10.1103/PhysRevD.76.052003",

language = "English (US)",

volume = "76",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector

AU - Adamson, P.

AU - Andreopoulos, C.

AU - Arms, K. E.

AU - Armstrong, R.

AU - Auty, D. J.

AU - Avvakumov, S.

AU - Ayres, D. S.

AU - Baller, B.

AU - Barish, B.

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 - Bock, B.

AU - Bock, G. J.

AU - Boehm, J.

AU - Boehnlein, D. J.

AU - Bogert, D.

AU - Border, P. M.

AU - Bower, C.

AU - Buckley-Geer, E.

AU - Bungau, C.

AU - Cabrera, A.

AU - Chapman, J. D.

AU - Cherdack, D.

AU - Childress, S.

AU - Choudhary, B. C.

AU - Cobb, J. H.

AU - Culling, A. J.

AU - De Jong, J. K.

AU - De Santo, A.

AU - Dierckxsens, M.

AU - Diwan, M. V.

AU - Dorman, M.

AU - Drakoulakos, D.

AU - Durkin, T.

AU - Erwin, A. R.

AU - Escobar, C. O.

AU - Evans, J. J.

AU - Harris, E. Falk

AU - Feldman, G. J.

AU - Fields, T. H.

AU - Ford, R.

AU - Frohne, M. V.

AU - Gallagher, H. R.

AU - Giurgiu, G. A.

AU - Godley, A.

AU - Gogos, J.

AU - Goodman, M. C.

AU - Gouffon, P.

AU - Gran, R.

AU - Grashorn, E. W.

AU - Grossman, N.

AU - Grzelak, K.

AU - Habig, A.

AU - Harris, D.

AU - Harris, P. G.

AU - Hartnell, J.

AU - Hartouni, E. P.

AU - Hatcher, R.

AU - Heller, K.

AU - Holin, A.

AU - Howcroft, C.

AU - Hylen, J.

AU - Indurthy, D.

AU - Irwin, G. M.

AU - Ishitsuka, M.

AU - Jaffe, D. E.

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 - Kim, M. S.

AU - Koizumi, G.

AU - Kopp, S.

AU - Kordosky, M.

AU - Koskinen, D. J.

AU - Kotelnikov, S. K.

AU - Kreymer, A.

AU - Kumaratunga, S.

AU - Lang, K.

AU - Lebedev, A.

AU - Lee, R.

AU - Ling, J.

AU - Liu, J.

AU - Litchfield, P. J.

AU - Litchfield, R. P.

AU - Lucas, P.

AU - Mann, W. A.

AU - Marchionni, A.

AU - Marino, A. D.

AU - Marshak, M. L.

AU - Marshall, J. S.

AU - Mayer, N.

AU - McGowan, A. M.

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 - Mislivec, A.

AU - Miyagawa, P. S.

AU - Moore, C. D.

AU - Morfín, J.

AU - Mualem, L.

AU - Mufson, S.

AU - Murgia, S.

AU - Musser, J.

AU - Naples, D.

AU - Nelson, J. K.

AU - Newman, H. B.

AU - Nichol, R. J.

AU - Nicholls, T. C.

AU - Ochoa-Ricoux, J. P.

AU - Oliver, W. P.

AU - Osiecki, T.

AU - Ospanov, R.

AU - Paley, J.

AU - Paolone, V.

AU - Para, A.

AU - Patzak, T.

AU - Pavlović, Ž

AU - Pearce, G. F.

AU - Peck, C. W.

AU - Peterson, E. A.

AU - Petyt, D. A.

AU - Ping, H.

AU - Piteira, R.

AU - Pittam, R.

AU - Plunkett, R. K.

AU - Rahman, D.

AU - Rameika, R. A.

AU - Raufer, T. M.

AU - Rebel, B.

AU - Reichenbacher, J.

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 - Schreiner, P.

AU - Semenov, V. K.

AU - Seun, S. M.

AU - Shanahan, P.

AU - Smart, W.

AU - Smirnitsky, V.

AU - Smith, C.

AU - Sousa, A.

AU - Speakman, B.

AU - Stamoulis, P.

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 - Tinti, G.

AU - Trostin, I.

AU - Tsarev, V. A.

AU - Tzanakos, G.

AU - Urheim, J.

AU - Vahle, P.

AU - Velissaris, C.

AU - Verebryusov, V.

AU - Viren, B.

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 - Wojcicki, S. G.

AU - Wright, D. M.

AU - Wu, Q. K.

AU - Yang, T.

AU - Yumiceva, F. X.

AU - Zheng, H.

AU - Zois, M.

AU - Zwaska, R.

PY - 2007/9/20

Y1 - 2007/9/20

N2 - The 5.4 kton MINOS far detector has been taking charge-separated cosmic ray muon data since the beginning of August, 2003 at a depth of 207 m.w.e. in the Soudan Underground Laboratory, Minnesota, USA. The data with both forward and reversed magnetic field running configurations were combined to minimize systematic errors in the determination of the underground muon charge ratio. When averaged, two independent analyses find the charge ratio underground to be Nμ+/Nμ-=1.374±0.004(stat)-0.010+0.012(sys). Using the map of the Soudan rock overburden, the muon momenta as measured underground were projected to the corresponding values at the surface in the energy range 1-7 TeV. Within this range of energies at the surface, the MINOS data are consistent with the charge ratio being energy independent at the 2 standard deviation level. When the MINOS results are compared with measurements at lower energies, a clear rise in the charge ratio in the energy range 0.3-1.0 TeV is apparent. A qualitative model shows that the rise is consistent with an increasing contribution of kaon decays to the muon charge ratio.

AB - The 5.4 kton MINOS far detector has been taking charge-separated cosmic ray muon data since the beginning of August, 2003 at a depth of 207 m.w.e. in the Soudan Underground Laboratory, Minnesota, USA. The data with both forward and reversed magnetic field running configurations were combined to minimize systematic errors in the determination of the underground muon charge ratio. When averaged, two independent analyses find the charge ratio underground to be Nμ+/Nμ-=1.374±0.004(stat)-0.010+0.012(sys). Using the map of the Soudan rock overburden, the muon momenta as measured underground were projected to the corresponding values at the surface in the energy range 1-7 TeV. Within this range of energies at the surface, the MINOS data are consistent with the charge ratio being energy independent at the 2 standard deviation level. When the MINOS results are compared with measurements at lower energies, a clear rise in the charge ratio in the energy range 0.3-1.0 TeV is apparent. A qualitative model shows that the rise is consistent with an increasing contribution of kaon decays to the muon charge ratio.

UR - http://www.scopus.com/inward/record.url?scp=34748877869&partnerID=8YFLogxK

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U2 - 10.1103/PhysRevD.76.052003

DO - 10.1103/PhysRevD.76.052003

M3 - Article

AN - SCOPUS:34748877869

VL - 76

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 5

M1 - 052003

ER -

Measurement of the atmospheric muon charge ratio at TeV energies with the MINOS detector

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