Abstract
The final results of the MACRO experiment on atmospheric neutrino oscillations are presented and discussed. The data concern different event topologies with average neutrino energies of ∼3 and ∼50 GeV. Multiple Coulomb scattering of the high-energy muons in absorbers was used to estimate the neutrino energy of each event. The angular distributions, the L/E ν distribution, the particle ratios, and the absolute fluxes all favor νπ⊒ντ oscillations with maximal mixing and Δm 2=0.0023 eV2. A discussion is made on the Monte Carlos used for the atmospheric neutrino flux. Some results on neutrino astrophysics are also briefly discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. Ahlen et al., Nucl. Instrum. Methods Phys. Res. A 324, 337 (1993); M. Ambrosio et al.,Nucl. Instrum. Methods Phys. Res. A 486, 663 (2002).
G. Giacomelli et al., Lectures at the 6th Constantine Summer School, Algeria, 2002; hep-ex/0211035.
M. Ambrosio et al., Astropart. Phys. 9, 105 (1998); hep-ex/0207043.
S. Ahlen et al., Phys. Lett. B 357, 481 (1995).
P. Bernardini, Vulcano Workshop, 1998; hep-ex/9809003; M. Ambrosio et al., Phys. Lett. B 434, 451 (1998); 478, 5 (2000); G. Giacomelli et al.,hep-ph/9901355; hep-ex/0201032.
M. Ambrosio et al., Phys. Lett. B 517, 59 (2001); hep-ex/0106049.
M. Ambrosio et al., Nucl. Instrum. Methods Phys. Res. A 492, 376 (2002); Phys. Lett. B 566, 35 (2003).
M. Ambrosio et al., Atmospheric Neutrino Oscillations with MACRO (in preparation).
V. Agrawal et al., Phys. Rev. D 53, 1314 (1996).
M. Gluck et al., Z. Phys. C 67, 433 (1995).
P. Lipari et al., Phys. Rev. Lett. 74, 384 (1995).
W. Lohmann et al., CERN 85-03.
M. Honda et al., Phys. Rev. D 64, 053011 (2001); 52, 4985 (1995).
G. Battistoni et al., Astropart. Phys. 19, 269 (2003); 19, 291(E) (2003); in Proceedings of the 28th ICRC, Tsukuba, Japan, 2003.
Y. Hayato, in Proceedings of the HEP EPS Conference, Aachen, 2003; Y. Fukuda et al., Phys. Rev. Lett. 81, 1562 (1998); Phys. Lett. B 433, 9 (1998).
M. F. Crouch, in Proceedings of the 20th ICRC, Moscow, 1987, Vol. 6, p. 165; M. Aglietta et al., Astropart. Phys. 3, 311 (1995); D. De Muth et al., hep-ex/0304016.
R. Battiston, in Proceedings of the 28th ICRC, Tsukuba, Japan, 2003; T. Montaruli, in Proceedings of the 28th ICRC, Tsukuba, Japan, 2003.
M. Ambrosio et al., Eur. Phys. J. C 25, 511 (2002); G. Giacomelli and L. Patrizii, hep-ex/0302011.
B. Roe, Probability and Statistics in Experimental Physics (Springer, 1992), p. 128.
W. W. M. Allison et al., Phys. Lett. B 449, 137 (1999); T. Mann et al., Nucl. Phys. B (Proc. Suppl.) 91, 134 (2001); 110, 349 (2002).
M. Ambrosio et al., Astrophys. J. 546, 1038 (2001); astro-ph/0002492.
M. Ambrosio et al., Phys. Rev. D 59, 012003 (1999); hep-ex/9807006; astro-ph/0302586.
M. Ambrosio et al., Astropart. Phys. 19, 1 (2003); S. Ahlen et al., Astrophys. J. 412, 301 (1993).
M. Ambrosio et al., Phys. Rev. D 60, 082002 (1999); hep-ex/9812020.
S. Ahlen et al., Astropart. Phys. 1, 11 (1992); M. Ambrosio et al., Astropart. Phys. 8, 123 (1998).
M. Ambrosio et al., Phys. Rev. D 67, 042002 (2003); astro-ph/0211119.
E. Witten, Phys. Rev. D 30, 272 (1984); A. De Rujula and S. L. Glashow, Nature 312, 734 (1984); D. Bakari et al.,hep-ex/0004019; M. Ambrosio et al.,Eur. Phys. J. C 13, 453 (2000).
Author information
Authors and Affiliations
Additional information
From Yadernaya Fizika, Vol. 67, No. 6, 2004, pp. 1165–1171.
Original English Text Copyright © 2004 by Giacomelli, Margiotta.
The authors represent the MACRO Collaboration
This article was submitted by the authors in English.
Rights and permissions
About this article
Cite this article
Giacomelli, G., Margiotta, A. New MACRO results on atmospheric neutrino oscillations. Phys. Atom. Nuclei 67, 1139–1146 (2004). https://doi.org/10.1134/1.1772449
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.1772449