New limits on the masses of the selectron and photino

K. Sugimoto, Abe, Y. Fujii, S. Igarashi, Y. Kurihara, M. H. Lee, F. Liu, A. Maki, T. Nozaki, T. Omori, H. Sagawa, Y. Sakai, T. Sasaki, Y. Takaiwa, S. Terada, P. Kirk, T. J. Wang, A. Abashian, K. Gotow, L. PiilonenS. K. Choi, C. Rosenfeld, L. Y. Zheng, R. E. Breedon, W. Ko, R. L. Lander, J. Rowe, S. Kanda, S. L. Olsen, K. Ueno, F. Kajino, T. Aso, H. Miyata, K. Miyano, N. Nakajima, K. Ohkubo, M. Sato, M. Shirai, N. Takashimizu, Y. Yamashita, Stephen Schnetzer, S. Behari, H. Fujimoto, S. Kobayashi, A. Murakami, S. K. Sahu, M. Yang, J. S. Kang, D. Y. Kim, S. S. Myung, H. S. Ahn, S. K. Kim, S. Matsumoto

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Abstract

A study of e+e- annihilations into final states containing a single energetic photon with no accompanying particles is made at a center of mass energy of 57.8 GeV. The measured cross section is consistent with expectations from standard model processes and is used to set limits on the masses of the scalar electron and photino particles predicted by supersymmetry theories. If the photino is assumed to be massless, the 90% confidence level lower limit on the mass of the degenerate scalar electron is 65.5 GeV. If the results of all the single photon experiments are combined, this lower limit increases to 79.3 GeV.

Original languageEnglish (US)
Pages (from-to)86-92
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume369
Issue number1
DOIs
StatePublished - Feb 15 1996

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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