Measurement of R and search for new quark flavors decaying into multi-jet final states in e+e- collisions between 54.0 and 61.4 GeV CM energies

K. Abe; K. Amako; Y. Arai; Y. Asano; M. Chiba; Y. Chiba; M. Daigo; T. Emura; I. Endo; M. Fukawa; T. Fukui; Y. Fukushima; J. Haba; D. Haidt; I. Hayashibara; Y. Hemmi; M. Higuchi; T. Hirose; Y. Hojyo; Y. Homma; Y. Hoshi; Y. Ikegami; N. Ishihara; T. Kamitani; N. Kanematsu; J. Kanzaki; R. Kikuchi; T. Kondo; T. Koseki; H. Kurashige; T. Matsui; M. Minami; K. Miyake; S. Mori; Y. Nagashima; T. Nakamura; I. Nakano; Y. Narita; S. Odaka; K. Ogawa; T. Ohama; T. Ohsugi; A. Okamoto; A. Ono; H. Osabe; T. Oyama; H. Saito; H. Sakae; H. Sakamoto; S. Sakamoto; M. Sakano; Makoto Sakuda; N. Sasao; M. Sato; M. Shioden; J. Shirai; S. Shirakata; S. Sugimoto; T. Sumiyoshi; A. Suzuki; Y. Suzuki; Y. Takada; F. Takasaki; A. Taketani; M. Takita; N. Tamura; R. Tanaka; N. Terunuma; K. Tobimatsu; T. Tsuboyama; A. Tsukamoto; S. Uehara; Y. Unno; M. Utsumi; M. Wakai; T. Watanabe; Y. Watase; F. Yabuki; Y. Yamada; T. Yamagata; T. yamashita; Y. Yonezawa; H. Yoshida

doi:10.1016/0370-2693(90)91946-9

Measurement of R and search for new quark flavors decaying into multi-jet final states in e⁺e^- collisions between 54.0 and 61.4 GeV CM energies

K. Abe, K. Amako, Y. Arai, Y. Asano, M. Chiba, Y. Chiba, M. Daigo, T. Emura, I. Endo, M. Fukawa, T. Fukui, Y. Fukushima, J. Haba, D. Haidt, I. Hayashibara, Y. Hemmi, M. Higuchi, T. Hirose, Y. Hojyo, Y. HommaY. Hoshi, Y. Ikegami, N. Ishihara, T. Kamitani, N. Kanematsu, J. Kanzaki, R. Kikuchi, T. Kondo, T. Koseki, H. Kurashige, T. Matsui, M. Minami, K. Miyake, S. Mori, Y. Nagashima, T. Nakamura, I. Nakano, Y. Narita, S. Odaka, K. Ogawa, T. Ohama, T. Ohsugi, A. Okamoto, A. Ono, H. Osabe, T. Oyama, H. Saito, H. Sakae, H. Sakamoto, S. Sakamoto, M. Sakano, Makoto Sakuda, N. Sasao, M. Sato, M. Shioden, J. Shirai, S. Shirakata, S. Sugimoto, T. Sumiyoshi, A. Suzuki, Y. Suzuki, Y. Takada, F. Takasaki, A. Taketani, M. Takita, N. Tamura, R. Tanaka, N. Terunuma, K. Tobimatsu, T. Tsuboyama, A. Tsukamoto, S. Uehara, Y. Unno, M. Utsumi, M. Wakai, T. Watanabe, Y. Watase, F. Yabuki, Y. Yamada, T. Yamagata, T. yamashita, Y. Yonezawa, H. Yoshida

Research output: Contribution to journal › Article › peer-review

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Abstract

We accumulated e⁺e^- annihilations into multi-hadrons at CM energies between 54.0 and 61.4 GeV with the VENUS detector at TRISTAN. Measured R-ratios are consistent with the standard model using the Z-boson mass; 91.1 GeV/c². Using two new observables, we searched for a planar four-jet and other multi-jet events resulting from the decay of a charge - 1 3eb' quark. Having observed no positive signals, we excluded b' masses between 19.4 and 28.2 GeV/c² with a 95% confidence level, regardless of branching into charged current and loop-induced flavor-changing neutral current decay, including a possible Higgs decay process. The charge + 2 3e top quark was excluded below f30.2 GeV/c².

Original language	English
Pages (from-to)	382-388
Number of pages	7
Journal	Physics Letters B
Volume	234
Issue number	3
DOIs	https://doi.org/10.1016/0370-2693(90)91946-9
Publication status	Published - Jan 11 1990
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/0370-2693(90)91946-9

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Abe, K., Amako, K., Arai, Y., Asano, Y., Chiba, M., Chiba, Y., Daigo, M., Emura, T., Endo, I., Fukawa, M., Fukui, T., Fukushima, Y., Haba, J., Haidt, D., Hayashibara, I., Hemmi, Y., Higuchi, M., Hirose, T., Hojyo, Y., ... Yoshida, H. (1990). Measurement of R and search for new quark flavors decaying into multi-jet final states in e⁺e^- collisions between 54.0 and 61.4 GeV CM energies. Physics Letters B, 234(3), 382-388. https://doi.org/10.1016/0370-2693(90)91946-9

Abe, K, Amako, K, Arai, Y, Asano, Y, Chiba, M, Chiba, Y, Daigo, M, Emura, T, Endo, I, Fukawa, M, Fukui, T, Fukushima, Y, Haba, J, Haidt, D, Hayashibara, I, Hemmi, Y, Higuchi, M, Hirose, T, Hojyo, Y, Homma, Y, Hoshi, Y, Ikegami, Y, Ishihara, N, Kamitani, T, Kanematsu, N, Kanzaki, J, Kikuchi, R, Kondo, T, Koseki, T, Kurashige, H, Matsui, T, Minami, M, Miyake, K, Mori, S, Nagashima, Y, Nakamura, T, Nakano, I, Narita, Y, Odaka, S, Ogawa, K, Ohama, T, Ohsugi, T, Okamoto, A, Ono, A, Osabe, H, Oyama, T, Saito, H, Sakae, H, Sakamoto, H, Sakamoto, S, Sakano, M, Sakuda, M, Sasao, N, Sato, M, Shioden, M, Shirai, J, Shirakata, S, Sugimoto, S, Sumiyoshi, T, Suzuki, A, Suzuki, Y, Takada, Y, Takasaki, F, Taketani, A, Takita, M, Tamura, N, Tanaka, R, Terunuma, N, Tobimatsu, K, Tsuboyama, T, Tsukamoto, A, Uehara, S, Unno, Y, Utsumi, M, Wakai, M, Watanabe, T, Watase, Y, Yabuki, F, Yamada, Y, Yamagata, T, yamashita, T, Yonezawa, Y & Yoshida, H 1990, 'Measurement of R and search for new quark flavors decaying into multi-jet final states in e⁺e^- collisions between 54.0 and 61.4 GeV CM energies', Physics Letters B, vol. 234, no. 3, pp. 382-388. https://doi.org/10.1016/0370-2693(90)91946-9

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title = "Measurement of R and search for new quark flavors decaying into multi-jet final states in e+e- collisions between 54.0 and 61.4 GeV CM energies",

abstract = "We accumulated e+e- annihilations into multi-hadrons at CM energies between 54.0 and 61.4 GeV with the VENUS detector at TRISTAN. Measured R-ratios are consistent with the standard model using the Z-boson mass; 91.1 GeV/c2. Using two new observables, we searched for a planar four-jet and other multi-jet events resulting from the decay of a charge - 1 3eb' quark. Having observed no positive signals, we excluded b' masses between 19.4 and 28.2 GeV/c2 with a 95% confidence level, regardless of branching into charged current and loop-induced flavor-changing neutral current decay, including a possible Higgs decay process. The charge + 2 3e top quark was excluded below f30.2 GeV/c2.",

author = "K. Abe and K. Amako and Y. Arai and Y. Asano and M. Chiba and Y. Chiba and M. Daigo and T. Emura and I. Endo and M. Fukawa and T. Fukui and Y. Fukushima and J. Haba and D. Haidt and I. Hayashibara and Y. Hemmi and M. Higuchi and T. Hirose and Y. Hojyo and Y. Homma and Y. Hoshi and Y. Ikegami and N. Ishihara and T. Kamitani and N. Kanematsu and J. Kanzaki and R. Kikuchi and T. Kondo and T. Koseki and H. Kurashige and T. Matsui and M. Minami and K. Miyake and S. Mori and Y. Nagashima and T. Nakamura and I. Nakano and Y. Narita and S. Odaka and K. Ogawa and T. Ohama and T. Ohsugi and A. Okamoto and A. Ono and H. Osabe and T. Oyama and H. Saito and H. Sakae and H. Sakamoto and S. Sakamoto and M. Sakano and Makoto Sakuda and N. Sasao and M. Sato and M. Shioden and J. Shirai and S. Shirakata and S. Sugimoto and T. Sumiyoshi and A. Suzuki and Y. Suzuki and Y. Takada and F. Takasaki and A. Taketani and M. Takita and N. Tamura and R. Tanaka and N. Terunuma and K. Tobimatsu and T. Tsuboyama and A. Tsukamoto and S. Uehara and Y. Unno and M. Utsumi and M. Wakai and T. Watanabe and Y. Watase and F. Yabuki and Y. Yamada and T. Yamagata and T. yamashita and Y. Yonezawa and H. Yoshida",

year = "1990",

month = jan,

day = "11",

doi = "10.1016/0370-2693(90)91946-9",

language = "English",

volume = "234",

pages = "382--388",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "3",

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TY - JOUR

T1 - Measurement of R and search for new quark flavors decaying into multi-jet final states in e+e- collisions between 54.0 and 61.4 GeV CM energies

AU - Abe, K.

AU - Amako, K.

AU - Arai, Y.

AU - Asano, Y.

AU - Chiba, M.

AU - Chiba, Y.

AU - Daigo, M.

AU - Emura, T.

AU - Endo, I.

AU - Fukawa, M.

AU - Fukui, T.

AU - Fukushima, Y.

AU - Haba, J.

AU - Haidt, D.

AU - Hayashibara, I.

AU - Hemmi, Y.

AU - Higuchi, M.

AU - Hirose, T.

AU - Hojyo, Y.

AU - Homma, Y.

AU - Hoshi, Y.

AU - Ikegami, Y.

AU - Ishihara, N.

AU - Kamitani, T.

AU - Kanematsu, N.

AU - Kanzaki, J.

AU - Kikuchi, R.

AU - Kondo, T.

AU - Koseki, T.

AU - Kurashige, H.

AU - Matsui, T.

AU - Minami, M.

AU - Miyake, K.

AU - Mori, S.

AU - Nagashima, Y.

AU - Nakamura, T.

AU - Nakano, I.

AU - Narita, Y.

AU - Odaka, S.

AU - Ogawa, K.

AU - Ohama, T.

AU - Ohsugi, T.

AU - Okamoto, A.

AU - Ono, A.

AU - Osabe, H.

AU - Oyama, T.

AU - Saito, H.

AU - Sakae, H.

AU - Sakamoto, H.

AU - Sakamoto, S.

AU - Sakano, M.

AU - Sakuda, Makoto

AU - Sasao, N.

AU - Sato, M.

AU - Shioden, M.

AU - Shirai, J.

AU - Shirakata, S.

AU - Sugimoto, S.

AU - Sumiyoshi, T.

AU - Suzuki, A.

AU - Suzuki, Y.

AU - Takada, Y.

AU - Takasaki, F.

AU - Taketani, A.

AU - Takita, M.

AU - Tamura, N.

AU - Tanaka, R.

AU - Terunuma, N.

AU - Tobimatsu, K.

AU - Tsuboyama, T.

AU - Tsukamoto, A.

AU - Uehara, S.

AU - Unno, Y.

AU - Utsumi, M.

AU - Wakai, M.

AU - Watanabe, T.

AU - Watase, Y.

AU - Yabuki, F.

AU - Yamada, Y.

AU - Yamagata, T.

AU - yamashita, T.

AU - Yonezawa, Y.

AU - Yoshida, H.

PY - 1990/1/11

Y1 - 1990/1/11

N2 - We accumulated e+e- annihilations into multi-hadrons at CM energies between 54.0 and 61.4 GeV with the VENUS detector at TRISTAN. Measured R-ratios are consistent with the standard model using the Z-boson mass; 91.1 GeV/c2. Using two new observables, we searched for a planar four-jet and other multi-jet events resulting from the decay of a charge - 1 3eb' quark. Having observed no positive signals, we excluded b' masses between 19.4 and 28.2 GeV/c2 with a 95% confidence level, regardless of branching into charged current and loop-induced flavor-changing neutral current decay, including a possible Higgs decay process. The charge + 2 3e top quark was excluded below f30.2 GeV/c2.

AB - We accumulated e+e- annihilations into multi-hadrons at CM energies between 54.0 and 61.4 GeV with the VENUS detector at TRISTAN. Measured R-ratios are consistent with the standard model using the Z-boson mass; 91.1 GeV/c2. Using two new observables, we searched for a planar four-jet and other multi-jet events resulting from the decay of a charge - 1 3eb' quark. Having observed no positive signals, we excluded b' masses between 19.4 and 28.2 GeV/c2 with a 95% confidence level, regardless of branching into charged current and loop-induced flavor-changing neutral current decay, including a possible Higgs decay process. The charge + 2 3e top quark was excluded below f30.2 GeV/c2.

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U2 - 10.1016/0370-2693(90)91946-9

DO - 10.1016/0370-2693(90)91946-9

M3 - Article

AN - SCOPUS:0011361984

SN - 0370-2693

VL - 234

SP - 382

EP - 388

JO - Physics Letters B

JF - Physics Letters B

IS - 3

ER -

Measurement of R and search for new quark flavors decaying into multi-jet final states in e⁺e^- collisions between 54.0 and 61.4 GeV CM energies

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