A new upper limit for the tau-neutrino magnetic moment

R. Schwienhorst, D. Ciampa, C. Erickson, M. Graham, K. Heller, R. Rusack, J. Sielaff, J. Trammell, J. Wilcox, K. Kodama, N. Ushida, C. Andreopoulos, N. Saoulidou, G. Tzanakos, P. Yager, B. Baller, D. Boehnlein, W. Freeman, B. Lundberg, J. MorfinR. Rameika, J. C. Yun, J. S. Song, C. S. Yoon, S. H. Chung, P. Berghaus, M. Kubantsev, N. W. Reay, R. Sidwell, N. Stanton, S. Yoshida, S. Aoki, T. Hara, J. T. Rhee, K. Hoshino, H. Jiko, M. Miyanishi, M. Komatsu, M. Nakamura, T. Nakano, K. Niwa, N. Nonaka, K. Okada, O. Sato, T. Akdogan, V. Paolone, C. Rosenfeld, A. Kulik, T. Kafka, W. Oliver, T. Patzak, J. Schneps

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Using a neutrino beam in which a ν τ component was identified for the first time, the ν τ magnetic moment was measured based on a search for an anomalous increase in the number of neutrino-electron interactions. One such event was observed when 2.3 were expected from background processes, giving an upper 90% confidence limit on μ ντ of 3.9 × 10 -7μ B.

Original languageEnglish (US)
Pages (from-to)23-29
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - Jul 26 2001

Bibliographical note

Funding Information:
We gratefully acknowledge the ingenuity and support given to us by the staffs at Fermilab and at the collaboration universities. This work is supported by the General Secretariat of Research and Technology of Greece, the Japan Society for the Promotion of Science, the Japan–US Cooperative Research Program for High Energy Physics, the Ministry of Education, Science and Culture of Japan, the Korea Research Foundation Grant, and the United States Department of Energy.


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