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Measurement of the Reactions e + e - → e + e - and e + e - →γγ at \(\sqrt{s}=52\) GeV

1987; Physical Society of Japan; Volume: 56; Issue: 11 Linguagem: Inglês

10.1143/jpsj.56.3767

1347-4073

VENUS Collaboration, Koya Abe, Katsuya Amako, Y. Arai, Y. Asano, H. Boerner, M. Chiba, Yasuo Chiba, Motomasa Daigo, T. Emura, I. Endo, M. Fukawa, Toru Fukui, Y. Fukushima, J. Haba, I. Hayashibara, Y. Hemmi, M. Higuchi, T. Hirose, Y. Hojyo, Yasuhiro Homma, Yoshimoto Hoshi, Y. Ikegami, N. Ishihara, T. Kamitani, Nobuyuki Kanematsu, J. Kanzaki, Ryusaburo Kikuchi, Takahiko Kondo, Tadashi Koseki, K. Kubo, H. Kurashige, Keisuke Maehata, Takayuki Matsui, M. Minami, K. Miyake, Shigeki Mori, Yorikiyo Nagashima, Yuji Nakagawa, T. Nakamura, Itsuo Nakano, Yoshiei Noguchi, S. Odaka, Kazuo Ogawa, T. Ohama, Takashi Ohsugi, A. Ono, H. Osabe, Hitoshi Saitô, H. Sakae, H. Sakamoto, S. Sakamoto, M. Sakano, M. Sakuda, N. Sasao, Minoru Sato, M. Shioden, J. Shirai, F. Suekane, Shojiro Sugimoto, T. Sumiyoshi, Y. Suzuki, Yoshihisa Takada, Fumihiko Takasaki, Atsushi Taketani, Norio Tamura, R. Tanaka, Yoshiki Teramoto, Keijiro Tobimatsu, Toru Tsuboyama, Akira Tsukamoto, S. Uehara, Yoshinobu Unno, M. Wakai, M. Wake, Takashi Watanabe, Y. Watase, Yoshikazu Yamada, T. Yamagata, To shihiro Yamashita, Hajime Yoshida,

Quantum Chromodynamics and Particle Interactions

The differential cross sections for e + e - → e + e - and e + e - →γγ have been measured at the highest energy of \(\sqrt{s}=52\) GeV in e + e - collisions.The process e + e - → e + e - is well understood within the framework of the standard model of electroweak interactions. The reaction e + e - →γγ is found to be in good agreement with QED. The 95% confidence limits obtained for the QED cut-off parameters are \(\varLambda_{+}>61\) GeV and \(\varLambda_{-}>72\) GeV for e + e - →γγ.