Measurement of τ polarization in e+e- annihilation at √s = 58 GeV

H. Hanai, J. Haba, K. Abe, K. Amako, Y. Arai, Tatsumi Arima, Y. Asano, M. Chiba, Y. Chiba, M. Daigo, M. Fukawa, Y. Fukushima, H. Hamasaki, Y. Hemmi, M. Higuchi, T. Hirose, Y. Homma, N. Hosoda, N. Ishihara, Y. Iwata & 47 others J. Kanzaki, R. Kikuchi, T. Kondo, T. T. Korhonen, H. Kurashige, E. K. Matsuda, T. Matsui, M. Miura, 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 polarization of τ leptons in the reaction e+e- → τ+τ- has been measured using a e+e- collider, TRISTAN, at the center-of-mass energy of 58 GeV. From the kinematical distributions of daughter particles in τ → eνν̄, μνν̄, ρν or π(K)ν decays, the average polarization of τ- and its forward-backward asymmetry have been evaluated to be 0.012±0.058 and 0.029±0.057, respectively.

Original languageEnglish
Pages (from-to)155-162
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume403
Issue number1-2
DOIs
Publication statusPublished - Jun 19 1997

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polarization
center of mass
leptons
asymmetry
decay
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Measurement of τ polarization in e+e- annihilation at √s = 58 GeV. / Hanai, H.; Haba, J.; Abe, K.; Amako, K.; Arai, Y.; Arima, Tatsumi; Asano, Y.; Chiba, M.; Chiba, Y.; Daigo, M.; Fukawa, M.; Fukushima, Y.; Hamasaki, H.; Hemmi, Y.; Higuchi, M.; Hirose, T.; Homma, Y.; Hosoda, N.; Ishihara, N.; Iwata, Y.; Kanzaki, J.; Kikuchi, R.; Kondo, T.; Korhonen, T. T.; Kurashige, H.; Matsuda, E. K.; Matsui, T.; Miura, M.; Miyake, K.; Mori, S.; Nagashima, Y.; Nakagawa, Y.; Nakamura, T.; Nakano, I.; Odaka, S.; Ogawa, K.; Ohama, T.; Ohsugi, T.; Ohyama, H.; Okabe, K.; Okamoto, A.; Ono, A.; Pennanen, J.; Sakamoto, H.; Sakuda, M.; Sato, M.; Sato, N.; Shioden, M.; Shirai, J.; Sumiyoshi, T.; Takada, Y.; Takasaki, F.; Takita, M.; Tamura, N.; Tatsumi, D.; Tobimatsu, K.; Tsuboyama, T.; Uehara, S.; Unno, Y.; Watanabe, T.; Watase, Y.; Yabuki, F.; Yamada, Y.; Yamagata, T.; Yonezawa, Y.; Yoshida, H.; Yusa, K.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 403, No. 1-2, 19.06.1997, p. 155-162.

Research output: Contribution to journalArticle

Hanai, H, Haba, J, Abe, K, Amako, K, Arai, Y, Arima, T, Asano, Y, Chiba, M, Chiba, Y, Daigo, M, Fukawa, M, Fukushima, Y, Hamasaki, H, Hemmi, Y, Higuchi, M, Hirose, T, Homma, Y, Hosoda, N, Ishihara, N, Iwata, Y, Kanzaki, J, Kikuchi, R, Kondo, T, Korhonen, TT, Kurashige, H, Matsuda, EK, Matsui, T, Miura, M, Miyake, K, Mori, S, Nagashima, Y, Nakagawa, Y, Nakamura, T, Nakano, I, Odaka, S, Ogawa, K, Ohama, T, Ohsugi, T, Ohyama, H, Okabe, K, Okamoto, A, Ono, A, Pennanen, J, Sakamoto, H, Sakuda, M, Sato, M, Sato, N, Shioden, M, Shirai, J, Sumiyoshi, T, Takada, Y, Takasaki, F, Takita, M, Tamura, N, Tatsumi, D, Tobimatsu, K, Tsuboyama, T, Uehara, S, Unno, Y, Watanabe, T, Watase, Y, Yabuki, F, Yamada, Y, Yamagata, T, Yonezawa, Y, Yoshida, H & Yusa, K 1997, 'Measurement of τ polarization in e+e- annihilation at √s = 58 GeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 403, no. 1-2, pp. 155-162. https://doi.org/10.1016/S0370-2693(97)00506-6
Hanai, H. ; Haba, J. ; Abe, K. ; Amako, K. ; Arai, Y. ; Arima, Tatsumi ; Asano, Y. ; Chiba, M. ; Chiba, Y. ; Daigo, M. ; Fukawa, M. ; Fukushima, Y. ; Hamasaki, H. ; Hemmi, Y. ; Higuchi, M. ; Hirose, T. ; Homma, Y. ; Hosoda, N. ; Ishihara, N. ; Iwata, Y. ; Kanzaki, J. ; Kikuchi, R. ; Kondo, T. ; Korhonen, T. T. ; Kurashige, H. ; Matsuda, E. K. ; Matsui, T. ; Miura, M. ; Miyake, K. ; Mori, S. ; Nagashima, Y. ; Nakagawa, Y. ; Nakamura, T. ; Nakano, I. ; Odaka, S. ; Ogawa, K. ; Ohama, T. ; Ohsugi, T. ; Ohyama, H. ; Okabe, K. ; Okamoto, A. ; Ono, A. ; Pennanen, J. ; Sakamoto, H. ; Sakuda, M. ; Sato, M. ; Sato, N. ; Shioden, M. ; Shirai, J. ; Sumiyoshi, T. ; Takada, Y. ; Takasaki, F. ; Takita, M. ; Tamura, N. ; Tatsumi, D. ; Tobimatsu, K. ; Tsuboyama, T. ; Uehara, S. ; Unno, Y. ; Watanabe, T. ; Watase, Y. ; Yabuki, F. ; Yamada, Y. ; Yamagata, T. ; Yonezawa, Y. ; Yoshida, H. ; Yusa, K. / Measurement of τ polarization in e+e- annihilation at √s = 58 GeV. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 1997 ; Vol. 403, No. 1-2. pp. 155-162.
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title = "Measurement of τ polarization in e+e- annihilation at √s = 58 GeV",
abstract = "The polarization of τ leptons in the reaction e+e- → τ+τ- has been measured using a e+e- collider, TRISTAN, at the center-of-mass energy of 58 GeV. From the kinematical distributions of daughter particles in τ → eνν̄, μνν̄, ρν or π(K)ν decays, the average polarization of τ- and its forward-backward asymmetry have been evaluated to be 0.012±0.058 and 0.029±0.057, respectively.",
author = "H. Hanai and J. Haba and K. Abe and K. Amako and Y. Arai and Tatsumi Arima and Y. Asano and M. Chiba and Y. Chiba and M. Daigo and M. Fukawa and Y. Fukushima and H. Hamasaki and Y. Hemmi and M. Higuchi and T. Hirose and Y. Homma and N. Hosoda and N. Ishihara and Y. Iwata and J. Kanzaki and R. Kikuchi and T. Kondo and Korhonen, {T. T.} and H. Kurashige and Matsuda, {E. K.} and T. Matsui and M. Miura and K. Miyake and S. Mori and Y. Nagashima and Y. Nakagawa and T. Nakamura and I. Nakano and S. Odaka and K. Ogawa and T. Ohama and T. Ohsugi and H. Ohyama and K. Okabe and A. Okamoto and A. Ono and J. Pennanen and H. Sakamoto and M. Sakuda and M. Sato and N. Sato and M. Shioden and J. Shirai and T. Sumiyoshi and Y. Takada and F. Takasaki and M. Takita and N. Tamura and D. Tatsumi and K. Tobimatsu and T. Tsuboyama and S. Uehara and Y. Unno and T. Watanabe and Y. Watase and F. Yabuki and Y. Yamada and T. Yamagata and Y. Yonezawa and H. Yoshida and K. Yusa",
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TY - JOUR

T1 - Measurement of τ polarization in e+e- annihilation at √s = 58 GeV

AU - Hanai, H.

AU - Haba, J.

AU - Abe, K.

AU - Amako, K.

AU - Arai, Y.

AU - Arima, Tatsumi

AU - Asano, Y.

AU - Chiba, M.

AU - Chiba, Y.

AU - Daigo, M.

AU - Fukawa, M.

AU - Fukushima, Y.

AU - Hamasaki, H.

AU - Hemmi, Y.

AU - Higuchi, M.

AU - Hirose, T.

AU - Homma, Y.

AU - Hosoda, N.

AU - Ishihara, N.

AU - Iwata, Y.

AU - Kanzaki, J.

AU - Kikuchi, R.

AU - Kondo, T.

AU - Korhonen, T. T.

AU - Kurashige, H.

AU - Matsuda, E. K.

AU - Matsui, T.

AU - Miura, M.

AU - Miyake, K.

AU - Mori, S.

AU - Nagashima, Y.

AU - Nakagawa, Y.

AU - Nakamura, T.

AU - Nakano, I.

AU - Odaka, S.

AU - Ogawa, K.

AU - Ohama, T.

AU - Ohsugi, T.

AU - Ohyama, H.

AU - Okabe, K.

AU - Okamoto, A.

AU - Ono, A.

AU - Pennanen, J.

AU - Sakamoto, H.

AU - Sakuda, M.

AU - Sato, M.

AU - Sato, N.

AU - Shioden, M.

AU - Shirai, J.

AU - Sumiyoshi, T.

AU - Takada, Y.

AU - Takasaki, F.

AU - Takita, M.

AU - Tamura, N.

AU - Tatsumi, D.

AU - Tobimatsu, K.

AU - Tsuboyama, T.

AU - Uehara, S.

AU - Unno, Y.

AU - Watanabe, T.

AU - Watase, Y.

AU - Yabuki, F.

AU - Yamada, Y.

AU - Yamagata, T.

AU - Yonezawa, Y.

AU - Yoshida, H.

AU - Yusa, K.

PY - 1997/6/19

Y1 - 1997/6/19

N2 - The polarization of τ leptons in the reaction e+e- → τ+τ- has been measured using a e+e- collider, TRISTAN, at the center-of-mass energy of 58 GeV. From the kinematical distributions of daughter particles in τ → eνν̄, μνν̄, ρν or π(K)ν decays, the average polarization of τ- and its forward-backward asymmetry have been evaluated to be 0.012±0.058 and 0.029±0.057, respectively.

AB - The polarization of τ leptons in the reaction e+e- → τ+τ- has been measured using a e+e- collider, TRISTAN, at the center-of-mass energy of 58 GeV. From the kinematical distributions of daughter particles in τ → eνν̄, μνν̄, ρν or π(K)ν decays, the average polarization of τ- and its forward-backward asymmetry have been evaluated to be 0.012±0.058 and 0.029±0.057, respectively.

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U2 - 10.1016/S0370-2693(97)00506-6

DO - 10.1016/S0370-2693(97)00506-6

M3 - Article

VL - 403

SP - 155

EP - 162

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1-2

ER -