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18 results on '"Dijkstra, H. B."'

1. Measurement of the processes e^+e^-→e^+e^- and e^+e^-→γγ at √s=52 GeV

Author

TOPAZ Collaboration, Adachi, I., 相原, 博昭, Dijkstra, H. B., 榎本, 良治, 藤井, 啓文, 藤井, 恵介, 藤井, 忠男, 藤本, 順平, Fujiwara, N., 林井, 久樹, Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., 梶川, 良一, 釜江, 常好, Kato, S., 川端, 節彌, 吉見, 弘道, Kishida, T., 小林, 誠, Kuroda, S., 楠木, 規央, Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., 高橋, 忠幸, Takahashi, T., Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., Aihara, H., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Hayashii, H., Kajikawa, R., Kamae, T., Kawabata, S., Kichimi, H., Kobayashi, M., Kusuki, N., Takahashi, Tadayuki, TOPAZ Collaboration, Adachi, I., 相原, 博昭, Dijkstra, H. B., 榎本, 良治, 藤井, 啓文, 藤井, 恵介, 藤井, 忠男, 藤本, 順平, Fujiwara, N., 林井, 久樹, Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., 梶川, 良一, 釜江, 常好, Kato, S., 川端, 節彌, 吉見, 弘道, Kishida, T., 小林, 誠, Kuroda, S., 楠木, 規央, Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., 高橋, 忠幸, Takahashi, T., Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., Aihara, H., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Hayashii, H., Kajikawa, R., Kamae, T., Kawabata, S., Kichimi, H., Kobayashi, M., Kusuki, N., and Takahashi, Tadayuki

Abstract

著者人数：71名

Published
2015

2. Charge asymmetry measurement in e^+e^-→μ^+μ^- and τ^+τ^- reactions at √s=55 GeV and 55 GeV

Author

TOPAZ Collaboration, Adachi, I., 相原, 博昭, Dijkstra, H. B., 榎本, 良治, 藤井, 啓文, 藤井, 恵介, 藤井, 忠男, 藤本, 順平, Fujiwara, N., 林井, 久樹, Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwata, S., Iwasaki, H., 梶川, 良一, 釜江, 常好, Kato, S., 川端, 節彌, 吉見, 弘道, Kishida, T., 小林, 誠, Kuroda, S., 楠木, 規央, Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., 高橋, 忠幸, Takahashi, T., Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., Aihara, H., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Hayashii, H., Kajikawa, R., Kamae, T., Kawabata, S., Kichimi, H., Kobayashi, M., Kusuki, N., Takahashi, Tadayuki, TOPAZ Collaboration, Adachi, I., 相原, 博昭, Dijkstra, H. B., 榎本, 良治, 藤井, 啓文, 藤井, 恵介, 藤井, 忠男, 藤本, 順平, Fujiwara, N., 林井, 久樹, Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwata, S., Iwasaki, H., 梶川, 良一, 釜江, 常好, Kato, S., 川端, 節彌, 吉見, 弘道, Kishida, T., 小林, 誠, Kuroda, S., 楠木, 規央, Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., 高橋, 忠幸, Takahashi, T., Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., Aihara, H., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Hayashii, H., Kajikawa, R., Kamae, T., Kawabata, S., Kichimi, H., Kobayashi, M., Kusuki, N., and Takahashi, Tadayuki

Abstract

著者人数：71名

Published
2015

3. Solubility of carbon dioxide in aqueous solutions of N-methyldiethanolamine and piperazine

Author

Derks, P. W. J., Dijkstra, H. B. S., Hogendoorn, J. A., Versteeg, G. F., and Engineering and Technology Institute Groningen

Abstract

The thermodynamics of the piperazine (PZ) activated aqueous N-methyldiethanolamine (MDEA) are studied. New experimental equilibrium data are reported on the solublity of CO 2 into aqueous solutions of MDEA and PZ, which complement published experimental data. CO 2 solubilities and their corresponding partial pressures, and the pH and conductivities of the solutions are presented. A fundamental thermodynamic model used to describe the thermodynamics of the system is put forward. The Electrolyte EOS is utilized to correlate experimental and published data. This is an abstract of a paper presented at the 18th International Congress of Chemical and Process Engineering (Prague, Czech Republic 8/24-28/2008).

Published
2008

4. SHiP: a new multipurpose beam-dump experiment at the SPS.

Author

Dijkstra, H. B.

Subjects
*POLARIZED photons, *LEPTONS (Nuclear physics), *LEPTON interactions, *MESON resonance, *ANGULAR distribution (Nuclear physics)
Abstract

SHiP is an experiment to look for very weakly interacting particles at a new to be constructed beam-dump facility at the CERN SPS. The SHiP Technical Proposal has been submitted to the CERN SPS Committee in April 2015. The 400 GeV/c proton beam extracted from the SPS will be dumped on a heavy target with the aim of integrating 2 × 1020 proton on target in five years. A detector located downstream of the target, based on a long vacuum tank followed by a spectrometer and particle identification detectors, will allow probing a variety of models with light long-lived exotic particles and masses below a few GeV/c2. The main focus will be the physics of the so-called Hidden Portals, i.e. search for Dark Photons, Light scalars and pseudo-scalars, and Heavy Neutral Leptons (HNL). The sensitivity to HNL will allow for the first time to probe, in the mass range between the kaon and the charm meson mass, a coupling range for which Baryogenesis and active neutrino masses could also be explained. Integrated in SHiP is an Emulsion Cloud Chamber, already used in the OPERA experiment, which will allow to study active neutrino cross-sections and angular distributions. In particular SHiP can distinguish between ντ and ̄ντ, and their deep inelastic scattering cross sections will be measured with statistics three orders of magnitude larger than currently available. [ABSTRACT FROM AUTHOR]

Published
2016
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5. Solubility of carbon dioxide in aqueous piperazine solutions

Author

Derks, P. W. J., Dijkstra, H. B. S., Hogendoorn, J. A., Versteeg, G. F., Derks, P. W. J., Dijkstra, H. B. S., Hogendoorn, J. A., and Versteeg, G. F.

Abstract

In the present work, new experimental data are presented on the solubility of carbon dioxide in aqueous piperazine solutions, for concentrations of 0.2 and 0.6 molar piperazine and temperatures of 25, 40, and 70°C respectively. The present data, and other data available in the literature, were correlated using a model based on the electrolyte equation of state (EoS), as originally proposed by Fürst and Renon. The final model derived, containing only seven adjustable (ionic) parameters, was able to describe the available experimental solubility data (>150 data points for total and/or CO2 partial pressure) with an average deviation of 16%.

Published
2005

8. Measurement of the processes e^+e^-→e^+e^- and e^+e^-→γγ at √s=52 GeV

Author

TOPAZ, Collaboration, Adachi, I., Dijkstra, H. B., Fujiwara, N., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kato, S., Kishida, T., Kuroda, S., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., Aihara, H., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Hayashii, H., Kajikawa, R., Kamae, T., Kawabata, S., Kichimi, H., Kobayashi, M., Kusuki, N., and Takahashi, Tadayuki

Abstract

著者人数：71名, 資料番号: SA1002298000

Published
1988

9. Search for Top Quark in e^+e^- Collisions at √s=52 GeV

Author

TOPAZ, Collaboration, Adachi, I., Dijkstra, H. B., Fujiwara, N., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kato, S., Kishida, T., Kuroda, S., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Okuno, H., Okusawa, T., Ohshima, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., Aihara, H., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Hayashii, H., Kajikawa, R., Kamae, T., Kawabata, S., Kichimi, H., Kobayashi, M., Kusuki, N., and Takahashi, Tadayuki

Abstract

著者人数：71名, 資料番号: SA1002303000

Published
1988

10. Search for Sequential Heavy Leptons in e^+e^- Collisions at √s=52 GeV

Author

TOPAZ, Collaboration, Adachi, I., Dijkstra, H. B., Fujiwara, N., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kato, S., Kishida, T., Kuroda, S., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., Aihara, H., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Hayashii, H., Kajikawa, R., Kamae, T., Kawabata, S., Kichimi, H., Kobayashi, M., Kusuki, N., Nakamura, K., and Takahashi, Tadayuki

Abstract

著者人数：71名, 資料番号: SA1002318000

Published
1988

11. Charge asymmetry measurement in e^+e^-→μ^+μ^- and τ^+τ^- reactions at √s=55 GeV and 55 GeV

Author

TOPAZ, Collaboration, Adachi, I., Dijkstra, H. B., Fujiwara, N., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwata, S., Iwasaki, H., Kato, S., Kishida, T., Kuroda, S., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., Aihara, H., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Hayashii, H., Kajikawa, R., Kamae, T., Kawabata, S., Kichimi, H., Kobayashi, M., Kusuki, N., and Takahashi, Tadayuki

Abstract

著者人数：71名, 資料番号: SA1002297000

Published
1988

12. Search for Top Quark in e+e- Collisions at sqrt[s]=52 GeV

Author

Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Okuno, H., Okusawa, T., Ohshima, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., and TOPAZ Collaboration

Subjects
High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract

We searched for possible signatures of top-quark production in 508 e+e- hadronic annihilation events collected at sqrt[s]=52 GeV by the TOPAZ detector at the KEK e+e- collider TRISTAN. The observed hadronic cross section and shape of hadronic events are consistent with the standard-model predictions without top quarks. A lower limit (95% confidence level) on the mass of the lightest top meson is set at 25.8 GeV.

Published
1988

13. Search for sequential heavy leptons in e+e- collisions at √s¯=52 GeV

Author

Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., TOPAZ Collaboration, Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., and TOPAZ Collaboration

Abstract

We have searched for new sequential heavy leptons L± in e+e- collisions at √s =52 GeV using the TOPAZ detector at the KEK storage ring TRISTAN. In the collected data with an integrated luminosity of 3.6 pb-1, no evidence for L± production has been observed. A lower mass limit for L± is determined to be 25.5 GeV/c2 at 95% confidence level.

Published
1988

14. Search for Top Quark in e+e- Collisions at sqrt[s]=52 GeV

Author

Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Okuno, H., Okusawa, T., Ohshima, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., TOPAZ Collaboration, タカハシ, トオル, Takahashi, Tōru, 高橋 徹, Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Okuno, H., Okusawa, T., Ohshima, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., TOPAZ Collaboration, タカハシ, トオル, Takahashi, Tōru, and 高橋 徹

Abstract

We searched for possible signatures of top-quark production in 508 e+e- hadronic annihilation events collected at sqrt[s]=52 GeV by the TOPAZ detector at the KEK e+e- collider TRISTAN. The observed hadronic cross section and shape of hadronic events are consistent with the standard-model predictions without top quarks. A lower limit (95% confidence level) on the mass of the lightest top meson is set at 25.8 GeV.

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15. Search for Top Quark in e+e- Collisions at sqrt[s]=52 GeV

Author

Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Okuno, H., Okusawa, T., Ohshima, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., TOPAZ Collaboration, Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Okuno, H., Okusawa, T., Ohshima, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., and TOPAZ Collaboration

Abstract

We searched for possible signatures of top-quark production in 508 e+e- hadronic annihilation events collected at sqrt[s]=52 GeV by the TOPAZ detector at the KEK e+e- collider TRISTAN. The observed hadronic cross section and shape of hadronic events are consistent with the standard-model predictions without top quarks. A lower limit (95% confidence level) on the mass of the lightest top meson is set at 25.8 GeV.

16. Search for sequential heavy leptons in e+e- collisions at √s¯=52 GeV

Author

Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., TOPAZ Collaboration, Adachi, I., Aihara, H., Dijkstra, H. B., Enomoto, R., Fujii, H., Fujii, K., Fujii, T., Fujimoto, J., Fujiwara, N., Hayashii, H., Higashi, S., Iida, N., Imanishi, A., Ikeda, H., Ishii, T., Itoh, R., Iwasaki, H., Iwata, S., Kajikawa, R., Kamae, T., Kato, S., Kawabata, S., Kichimi, H., Kishida, T., Kobayashi, M., Kuroda, S., Kusuki, N., Maruyama, A., Maruyama, K., Masuda, H., Matsuda, T., Miyamoto, A., Morimoto, T., Nakamura, K., Nitoh, O., Noguchi, S., Ochiai, F., Ohshima, T., Okuno, H., Okusawa, T., Ozaki, H., Sato, T., Sai, F., Shimonaka, J., Shimozawa, K., Shirahashi, A., Sugahara, R., Sugiyama, A., Suzuki, S., Suwada, T., Takahashi, K., Takahashi, T., Takahashi, Tohru, Takamure, H., Tanaka, T., Tauchi, T., Teramoto, Y., Tsukamoto, T., Ukai, K., Uno, S., Watanabe, Y., Yamakawa, O., Yamamoto, A., Yamamoto, S., Yamashita, S., Yamauchi, M., Yoshimura, Y., Yoshioka, M., and TOPAZ Collaboration

Abstract

We have searched for new sequential heavy leptons L± in e+e- collisions at √s =52 GeV using the TOPAZ detector at the KEK storage ring TRISTAN. In the collected data with an integrated luminosity of 3.6 pb-1, no evidence for L± production has been observed. A lower mass limit for L± is determined to be 25.5 GeV/c2 at 95% confidence level.

17. Search for sequential heavy leptons ine+e−collisions at √s¯=52 GeV

Author

Adachi, I., primary, Aihara, H., additional, Dijkstra, H. B., additional, Enomoto, R., additional, Fujii, H., additional, Fujii, K., additional, Fujii, T., additional, Fujimoto, J., additional, Fujiwara, N., additional, Hayashii, H., additional, Higashi, S., additional, Iida, N., additional, Imanishi, A., additional, Ikeda, H., additional, Ishii, T., additional, Itoh, R., additional, Iwasaki, H., additional, Iwata, S., additional, Kajikawa, R., additional, Kamae, T., additional, Kato, S., additional, Kawabata, S., additional, Kichimi, H., additional, Kishida, T., additional, Kobayashi, M., additional, Kuroda, S., additional, Kusuki, N., additional, Maruyama, A., additional, Maruyama, K., additional, Masuda, H., additional, Matsuda, T., additional, Miyamoto, A., additional, Morimoto, T., additional, Nakamura, K., additional, Nitoh, O., additional, Noguchi, S., additional, Ochiai, F., additional, Ohshima, T., additional, Okuno, H., additional, Okusawa, T., additional, Ozaki, H., additional, Sato, T., additional, Sai, F., additional, Shimonaka, J., additional, Shimozawa, K., additional, Shirahashi, A., additional, Sugahara, R., additional, Sugiyama, A., additional, Suzuki, S., additional, Suwada, T., additional, Takahashi, K., additional, Takahashi, T., additional, Takamure, H., additional, Tanaka, T., additional, Tauchi, T., additional, Teramoto, Y., additional, Tsukamoto, T., additional, Ukai, K., additional, Uno, S., additional, Watanabe, Y., additional, Yamakawa, O., additional, Yamamoto, A., additional, Yamamoto, S., additional, Yamashita, S., additional, Yamauchi, M., additional, Yoshimura, Y., additional, and Yoshioka, M., additional

Published
1988
Full Text
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18. Search for Top Quark ine+e−Collisions ats=52GeV

Author

Adachi, I., primary, Aihara, H., additional, Dijkstra, H. B., additional, Enomoto, R., additional, Fujii, H., additional, Fujii, K., additional, Fujii, T., additional, Fujimoto, J., additional, Fujiwara, N., additional, Hayashii, H., additional, Higashi, S., additional, Iida, N., additional, Imanishi, A., additional, Ikeda, H., additional, Ishii, T., additional, Itoh, R., additional, Iwasaki, H., additional, Iwata, S., additional, Kajikawa, R., additional, Kamae, T., additional, Kato, S., additional, Kawabata, S., additional, Kichimi, H., additional, Kishida, T., additional, Kobayashi, M., additional, Kuroda, S., additional, Kusuki, N., additional, Maruyama, A., additional, Maruyama, K., additional, Masuda, H., additional, Matsuda, T., additional, Miyamoto, A., additional, Morimoto, T., additional, Nakamura, K., additional, Nitoh, O., additional, Noguchi, S., additional, Ochiai, F., additional, Okuno, H., additional, Okusawa, T., additional, Ohshima, T., additional, Ozaki, H., additional, Sato, T., additional, Sai, F., additional, Shimonaka, J., additional, Shimozawa, K., additional, Shirahashi, A., additional, Sugahara, R., additional, Sugiyama, A., additional, Suzuki, S., additional, Suwada, T., additional, Takahashi, K., additional, Takahashi, T., additional, Takamure, H., additional, Tanaka, T., additional, Tauchi, T., additional, Teramoto, Y., additional, Tsukamoto, T., additional, Ukai, K., additional, Uno, S., additional, Watanabe, Y., additional, Yamakawa, O., additional, Yamamoto, A., additional, Yamamoto, S., additional, Yamashita, S., additional, Yamauchi, M., additional, Yoshimura, Y., additional, and Yoshioka, M., additional

Published
1988
Full Text
View/download PDF

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