Measurement of the proton-antiproton pair production from two-photon collisions at TRISTAN

H. Hamasaki, K. Abe, K. Amako, Y. Arai, Y. Asano, M. Chiba, Y. Chiba, M. Daigo, M. Fukawa, Y. Fukushima, J. Haba, H. Hanai, Y. Hemmi, M. Higuchi, T. Hirose, Y. Homma, N. Ishihara, Y. Iwata, J. Kanzaki, R. KikuchiT. Kondo, T. T. Korhonen, H. Kurashige, E. K. Matsuda, T. Matsui, K. Miyake, S. Mori, 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, M. Sakuda, M. Sato, N. Sato, M. Shioden, J. Shirai, T. Sumiyoshi, Y. Takada, F. Takasaki, M. Takita, N. Tamura, D. Tatsumi, K. Tobimatsu, T. Tsuboyama, S. Uehara, Y. Unno, T. Watanabe, Y. Watase, F. Yabuki, Y. Yamada, T. Yamagata, Y. Yonezawa, H. Yoshida, K. Yusa

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Abstract

The cross section of the γγ → pp̄ reaction was measured at two-photon center-of-mass energy (Wγγ) between 2.2 and 3.3 GeV, using the two-photon process at an e+ e- collider, TRISTAN. The Wγγ dependence of the cross section integrated over a c.m. angular region of |cos θ*| < 0.6 is in good agreement with the previous measurements and the theoretical prediction based on diquark model in the high Wγγ region.

Original languageEnglish
Pages (from-to)185-192
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume407
Issue number2
DOIs
Publication statusPublished - Aug 28 1997

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Hamasaki, H., Abe, K., Amako, K., Arai, Y., Asano, Y., Chiba, M., Chiba, Y., Daigo, M., Fukawa, M., Fukushima, Y., Haba, J., Hanai, H., Hemmi, Y., Higuchi, M., Hirose, T., Homma, Y., Ishihara, N., Iwata, Y., Kanzaki, J., ... Yusa, K. (1997). Measurement of the proton-antiproton pair production from two-photon collisions at TRISTAN. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 407(2), 185-192. https://doi.org/10.1016/S0370-2693(97)00728-4