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

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

doi:10.1103/physrevd.76.052003

Cited by 62 publications

(41 citation statements)

References 24 publications

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“…Analysis of the oscillation parameters has been found to be consistent with oscillations and CPT conservation [69]. Further analyses on cosmic muons have been published showing the ratio of µ + to µ − [70] and the seasonal variation in the rate of cosmic ray muons [71].…”

Section: Minos Physics Goals and Achievementsmentioning

confidence: 81%

A search for sterile neutrinos at the MINOS experiment

Pittam

2010

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MINOS is a long baseline neutrino oscillation experiment based at the Fermi National Accelerator Laboratory in Illinois, USA. The experiment was designed to study neutrino oscillation phenomena. The ν µ beam produced by the NuMI beam facility at FNAL is used along with two functionally identical detectors. The Near Detector at FNAL and a Far Detector 735 km away in the Soudan Underground Laboratory in northern Minnesota. Comparison of the observed spectra of neutrinos at the two detectors provides the evidence for neutrino oscillations.This thesis presents work on the postulated phenomena of sterile neutrinos. Oscillations between active and sterile neutrinos will lead to a deficit in the expected rate of measured Neutral Current interactions at the Far Detector. A technique for selecting Neutral Current events utilising an Artificial Neural Network is presented with resulting overall efficiency of 91.1% and purity of 66.0%. A method of predicting the expected Charged and Neutral Current energy spectra at the Far Detector given the data recorded at the Near Detector is presented. A model to search for oscillations between sterile and active neutrinos is developed. Sources of systematic uncertainty that can effect the results of the analysis are discussed.The analysis developed is applied to a Standard Model 3 flavour oscillation model as a cross check under the scenarios with and without ν e appearance. The oscillation parameters measured by this model are ∆m −0.11 for the no ν e appearance result. An analysis of the resulting prediction reveals no evidence for active neutrino disappearance.The analysis is then performed using the 4 flavour neutrino oscillation model developed. Again this is done under the 2 scenarios of ν e appearance and no ν e appearance. The results of this analysis are ∆m −0.19 and θ 34 = 0.00 +0.60 for ν e appearance. This is consistent with no oscillations between active and sterile neutrinos.

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Section: Minos Physics Goals and Achievementsmentioning

confidence: 81%

A search for sterile neutrinos at the MINOS experiment

Pittam

2010

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“…The recent measurement of the µ + / µ − ratio above 1 TeV with the MINOS far detector (Adamson et al, 2007) reflects the importance of kaon production in an interesting way. The charge ratio increases as kaons become dominant, from which one can infer that the K + / K − ratio is larger than the π + / π − ratio.…”

Section: Neutrinos From Kaonsmentioning

confidence: 99%

Atmospheric neutrinos in the context of muon and neutrino radiography

Gaisser

2010

Earth Planet Sp

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“…Results have been published in [30], with the fraction of ν µ which can convert into a sterile neutrinos limited to be 50% at 90% C.L. This thesis analyses sterile neutrino mixing with ∆m Apart from the beam neutrino oscillations, MINOS has studied neutrino oscillations [83] with neutrinos coming from the atmosphere and cosmic ray fluxes [84,85] exploiting the underground location and the magnetisation of the detectors. The Near Detector can be used for neutrino cross section measurements [86].…”

Section: The Physics Capabilities Of Minosmentioning

confidence: 99%

Sterile neutrino oscillations in MINOS and hadron production in pC collisions

Tinti

2010

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MINOS is a long baseline neutrino oscillation experiment, starting with a muon-neutrino beam, for the precise measurement of the atmospheric neutrino oscillation parameters |∆m 2 | and θ 23 . The Near Detector measures the neutrino flux and spectra before oscillations. The beam propagates for 735 km to the Far Detector, which measures the depleted spectrum after oscillations. The depletion can be interpreted as ν µ → ν τ oscillations. Subdominant ν µ → ν e oscillations may be allowed if the mixing angle θ 13 = 0.The two detectors are functionally identical in order to cancel systematic errors when using the Near Detector data to constrain the Far Detector prediction. A crucial part of the analysis is the relative calibration between the two detectors, which is known at the 2% level. A calibration procedure to remove the time and temperature dependence of the detector response using through-going cosmic muons is presented here.Although the two-detector approach reduces the systematic uncertainties related to the neutrino flux, a cross check on the neutrino parent meson ratios is performed in this thesis. The cross sections of mesons produced in proton-carbon interactions from the NA49 experiment have been measured and the results have been compared to the MINOS expectations.A neutrino oscillation analysis allowing mixing to a sterile neutrino is performed, under the assumption that the additional mass splitting is O(1 eV 2 ). The analysis uses the energy spectrum of the neutral current interaction products, as neutral current interactions are sensitive to sterile neutrino mixing but not to the active flavour neutrino mixing. The neutrino oscillation parameters have been found to be: To my parents

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

Cited by 62 publications

References 24 publications

A search for sterile neutrinos at the MINOS experiment

A search for sterile neutrinos at the MINOS experiment

Atmospheric neutrinos in the context of muon and neutrino radiography

Sterile neutrino oscillations in MINOS and hadron production in pC collisions

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