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Chinese Physics C> 2002, Vol. 26> Issue(7) : 672-677 

Production and Decay of the Neutral Top-Pion in High Energy e+e－ Colliders

  •  College of Physics and Information Engineering, Henan Normal University, Xinxiang 453002, China

  • We study the production and decay of the neutral top-pion π0t in topcolor-assisted technicolor (TC2) theory. Our results show that, except for the dominant decay modes b, c and gg, the πt0 can also decay into γγ and Zγ modes. It can be significantly produced at high energy linear e+e－ collider (LC) experiments via the processes e+e－→π0t γ and e+e－→Zπt0. We further calculate the production cross sections of the processes e+e－→γπt0→γc and e+e－→Zπt0→Zc. We find that the signatures of the neutral top-pion πt0 can be detected via these processes.
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    [1] . Hill C T. Phys. Lett.,1995,B345:483—485;Lane K, Eichten E. Phys. Lett.,1995,B352:382—387;Lane K. Phys. Lett.,1998,B433:96—1012. Buchalla G et al. Phys. Rev.,1996,D53:5185—5200 3. HE Hong-Jian, YUAN C P. Phys. Rev. Lett.,1999,83:28—32;Burdman G. Phys. Rev. Lett.,1999,83:2888—2892 4. YUE Chong-Xing, KUANG Yu-Ping, LU Gong-Ru. J. Phys.,1997,G23:163—167 5. Slaven D, YANG Bing-Ling, ZHANG X. M. Phys. Rev.,1992,D45:4349—4352;YUE Chong-Xing, WANG Xue-Lei, LU Gong-Ru. J. Phys.,1993,G19:821—826 6. LU Gong-Ru, YUE Chong-Xing, LI Wei-Bin et al. High Energy Phys. and Nucl. Phys.,2001,25(2);101—107(in Chinese);YUE Chong-Xing, LI Jian-Tao. High Energy Phys. and Nucl. Phys.,2001,25(10):945(in Chinese)(鲁公儒,岳崇兴,李卫彬等.高能物理与核物理,2001,25(2):101—107;岳崇兴,李建涛.高能物理与核物理,2001,25(10):945)7. Randall L, Simmons E H. Nucl. Phys.,1992,B380:3—40

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YUE Chong-Xing, XU Qing-Jun and LIU Guo-Li. Production and Decay of the Neutral Top-Pion in High Energy e+e－ Colliders[J]. Chinese Physics C, 2002, 26(7): 672-677.
YUE Chong-Xing, XU Qing-Jun and LIU Guo-Li. Production and Decay of the Neutral Top-Pion in High Energy e+e－ Colliders[J]. Chinese Physics C, 2002, 26(7): 672-677. shu
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Received: 2001-09-11
Revised: 1900-01-01
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Production and Decay of the Neutral Top-Pion in High Energy e+e－ Colliders

    Corresponding author: YUE Chong-Xing,
  • College of Physics and Information Engineering, Henan Normal University, Xinxiang 453002, China
  • Received Date: 2001-09-11
  • Accepted Date: 1900-01-01
  • Available Online: 2002-07-05

Abstract: We study the production and decay of the neutral top-pion π0t in topcolor-assisted technicolor (TC2) theory. Our results show that, except for the dominant decay modes b, c and gg, the πt0 can also decay into γγ and Zγ modes. It can be significantly produced at high energy linear e+e－ collider (LC) experiments via the processes e+e－→π0t γ and e+e－→Zπt0. We further calculate the production cross sections of the processes e+e－→γπt0→γc and e+e－→Zπt0→Zc. We find that the signatures of the neutral top-pion πt0 can be detected via these processes.

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