A search for excited electrons in the e+e- reactions up to the √s of 56 GeV

K. Abe, K. Amako, Y. Arai, Y. Asano, M. Chiba, Y. Chiba, M. Daigo, T. Emura, I. Endo, M. Fukawa, T. Fukui, Y. Fukushima, J. Haba, D. Haidt, I. Hayashibara, Y. Hemmi, M. Higuchi, T. Hirose, Y. Hojyo, Y. HommaY. Hoshi, Y. Ikegami, N. Ishihara, T. Kamitani, N. Kanematsu, J. Kanzaki, R. Kikuchi, T. Kondo, T. Koseki, K. Kubo, H. Kurashige, T. Matsui, M. Minami, K. Miyake, S. Mori, Y. Nagashima, T. Nakamura, I. Nakano, S. Odaka, K. Ogawa, T. Ohama, T. Ohsugi, A. Ono, H. Osabe, H. Saito, H. Sakae, H. Sakamoto, S. Sakamoto, M. Sakano, M. Sakuda, N. Sasao, M. Sato, M. Shioden, J. Shirai, F. Suekane, S. Sugimoto, T. Sumiyoshi, Y. Suzuki, Y. Takada, F. Takasaki, A. Taketani, N. Tamura, R. Tanaka, K. Tobimatsu, T. Tsuboyama, A. Tsukamoto, S. Uehara, Y. Unno, M. Wakai, T. Watanabe, Y. Watase, Y. Yamada, T. Yamagata, T. Yamashita, H. Yoshida

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Abstract

Excited electrons, e*'s, have been searched for by making use of the processes e+e-→e+e-γγ and eγ(e) (quasi-real Compton scattering). From the former process, we have obtained the lower limit for the mass of e*', 27.9 GeV/c. A good agreement with QED is observed in the latter process, and new upper limits have been set for the coupling strength λ as a function of the mass of e*.

Original languageEnglish
Pages (from-to)400-404
Number of pages5
JournalPhysics Letters B
Volume213
Issue number3
DOIs
Publication statusPublished - Oct 27 1988

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Abe, K., Amako, K., Arai, Y., Asano, Y., Chiba, M., Chiba, Y., Daigo, M., Emura, T., Endo, I., Fukawa, M., Fukui, T., Fukushima, Y., Haba, J., Haidt, D., Hayashibara, I., Hemmi, Y., Higuchi, M., Hirose, T., Hojyo, Y., ... Yoshida, H. (1988). A search for excited electrons in the e+e- reactions up to the √s of 56 GeV. Physics Letters B, 213(3), 400-404. https://doi.org/10.1016/0370-2693(88)91784-4