Precise measurement of the total hadronic cross section in e+ e- annihilation at √s = 57.77 GeV

K. Yusa, H. Hamasaki, S. Mori, T. Tsuboyama, K. Abe, K. Amako, Y. Arai, Y. Asano, M. Chiba, Y. Chiba, M. Daigo, M. Fukawa, Y. Fukushima, J. Haba, Y. Hemmi, M. Higuchi, T. Hirose, Y. Homma, N. Ishihara, Y. IwataJ. Kanzaki, R. Kikuchi, T. Kondo, T. T. Korhonen, H. Kurashige, E. K. Matsuda, T. Matsui, K. Miyake, Y. Nagashima, Y. Nakagawa, T. Nakamura, I. Nakano, S. Odaka, K. Ogawa, T. Ohama, T. Ohsugi, H. Ohyama, K. Okabe, A. Okamoto, A. Ono, J. Pennanen, H. Sakamoto, Makoto Sakuda, M. Sato, N. Sato, M. Shioden, J. Shirai, T. Sumiyoshi, Y. Takada, F. Takasaki, M. Takita, N. Tamura, D. Tatsumi, K. Tobimatsu, S. Uehara, Y. Unno, T. Watanabe, Y. Watase, F. Yabuki, Y. Yamada, T. Yamagata, Y. Yonezawa, H. Yoshida

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Abstract

The total hadronic cross section in e+ e annihilation has been measured at √s = 57.77 GeV using 290 pb 1 data sample collected with the VENUS detector at KEK TRISTAN. The cross section obtained is 140.3 ± 1.8 pb for s'/s ≥ 0.5, where s' is the square of the invariant mass of the final state hadrons. The present result together with the recent results from the LEP collaborations is used to determine the hadronic γ -Z0 interference parameter, jhadtot, to be 0.196 ± 0.083. The result is in good agreement with the Standard Model prediction of 0.220.

Original languageEnglish
Pages (from-to)167-177
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume447
Issue number1-2
Publication statusPublished - 1999
Externally publishedYes

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Keywords

  • γ-Z interference
  • Hadron production by electron-positron collisions
  • Initial state radiation
  • S-matrix method
  • Total hadronic cross section

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Yusa, K., Hamasaki, H., Mori, S., Tsuboyama, T., Abe, K., Amako, K., Arai, Y., Asano, Y., Chiba, M., Chiba, Y., Daigo, M., Fukawa, M., Fukushima, Y., Haba, J., Hemmi, Y., Higuchi, M., Hirose, T., Homma, Y., Ishihara, N., ... Yoshida, H. (1999). Precise measurement of the total hadronic cross section in e+ e- annihilation at √s = 57.77 GeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 447(1-2), 167-177.