Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders

  • In the framework of the topcolor-assisted Technicolor(TC2) model, the neutral top-pion (Π0t) production processes at hadron colliders(Tevatron and LHC), pp(pp)→Π0tΠ0t and pp(pp)→bΠ0t, are studied. The results show that the cross sections of these two processes at Tevatron are too small to observe Π0t. The cross sections can be significantly enhanced at LHC, but Π0t is also not observable via Π0tΠ0t production at LHC. The cross section of bΠ0t production reaches the level of a few hundred fb even a few pb at LHC and 104—105 events can be produced each year. Furthermore, Due to the existence of the flavor-changing coupling Π0t tc, Π0t can be experimentally detected via the decay mode Π0t tc with the clean background. Therefore, the enough distinguished Π0t events would be obtained via the bΠ0t production at LHC future experiments. Our study can provide the valuable theoretical information for probing neutral top-pion and testing TC2 model at LHC.
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CHEN Lan-Li, XU Wen-Na and WANG Xue-Lei. Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders[J]. Chinese Physics C, 2007, 31(3): 232-235.
CHEN Lan-Li, XU Wen-Na and WANG Xue-Lei. Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders[J]. Chinese Physics C, 2007, 31(3): 232-235. shu
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Received: 2006-06-23
Revised: 2006-06-28
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Study of the Top-Pion Production Processes pp(pp)→Π0tΠ0t,bΠ0t at the Hadron Colliders

    Corresponding author: WANG Xue-Lei,
  • College of Physics and Information Engineering, Henan Normal University, Xinxiang 453007, China2 Department of Electronics, Nanyang Institute of Technology, Nanyang 473004, China

Abstract: In the framework of the topcolor-assisted Technicolor(TC2) model, the neutral top-pion (Π0t) production processes at hadron colliders(Tevatron and LHC), pp(pp)→Π0tΠ0t and pp(pp)→bΠ0t, are studied. The results show that the cross sections of these two processes at Tevatron are too small to observe Π0t. The cross sections can be significantly enhanced at LHC, but Π0t is also not observable via Π0tΠ0t production at LHC. The cross section of bΠ0t production reaches the level of a few hundred fb even a few pb at LHC and 104—105 events can be produced each year. Furthermore, Due to the existence of the flavor-changing coupling Π0t tc, Π0t can be experimentally detected via the decay mode Π0t tc with the clean background. Therefore, the enough distinguished Π0t events would be obtained via the bΠ0t production at LHC future experiments. Our study can provide the valuable theoretical information for probing neutral top-pion and testing TC2 model at LHC.

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