Search for unstable heavy neutral leptons in e+e- annihilations at

N. M. Shaw, D. Blanis, A. Bodek, H. Budd, R. Coombes, S. Eno, C. A. Fry, H. Harada, Y. H. Ho, Y. K. Kim, T. Kumita, T. Mori, S. L. Olsen, A. Sill, E. H. Thorndike, K. Ueno, H. W. Zheng, R. Imlay, P. Kirk, J. LimR. R. McNeil, W. Metcalf, S. S. Myung, C. P. Cheng, P. Gu, J. Li, Y. K. Li, Z. P. Mao, Y. T. Xu, Y. C. Zhu, A. Abashian, K. Gotow, K. Hu, E. H. Low, M. E. Mattson, F. Naito, L. Piilonen, K. L. Sterner, S. Lusin, C. Rosenfeld, A. T.M. Wang, S. Wilson, M. Frautschi, H. Kagan, R. Kass, C. G. Trahern, R. E. Breedon, G. N. Kim, Winston Ko, R. L. Lander, K. Maeshima, R. L. Malchow, J. R. Smith, K. Sparks, M. C.S. Williams, K. Abe, Y. Fujii, Y. Higashi, S. K. Kim, Y. Kurihara, A. Maki, T. Nozaki, T. Omori, H. Sagawa, Y. Sakai, Y. Sugimoto, Y. Takaiwa, S. Terada, K. Tsuchiya, R. Walker, F. Kajino, D. Perticone, R. Poling, T. Thomas, Y. Ishi, K. Miyano, H. Miyata, M. Ogawa, T. Sasaki, Y. Yamashita, A. Bacala, J. Green, I. H. Park, S. Sakamoto, F. Sannes, S. Schnetzer, R. Stone, S. Trentalange, J. Vinson, H. Asakura, K. Eguchi, H. Ichinose, H. Itoh, S. Kobayashi, A. Murakami, K. Toyoshima, J. S. Kang, H. J. Kim, M. H. Lee, D. H. Han, E. J. Kim, D. Son, T. Kojima, S. Matsumoto, R. Tanaka, Y. Yamagishi, T. Yasuda, R. Chiba, K. Hanaoka, S. Igarashi, H. Murata, H. Yokota, T. Ishizuka, K. Ohta

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Abstract

A search for unstable heavy neutral leptons has been made at center-of-mass energies from 50 to 60.8 GeV with the AMY detector at the KEK Storage ring TRISTAN. The neutral leptons are assumed to decay via mixing to electrons and muons. Events with two leptons were searched for. No evidence for their existence was found. Limits in the mass range.

Original languageEnglish
Pages (from-to)1342-1345
Number of pages4
JournalPhysical Review Letters
Volume63
Issue number13
DOIs
StatePublished - 1989

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