Chin. Phys. Lett.  2008, Vol. 25 Issue (9): 3196-3199    DOI:
Original Articles |
Charged Top-Pion Production Associated with a Gluon Jet at the LHC
WANG Xue-Lei1, XU Wen-Na1,2, XIAO Zhen-Jun2
1College of Physics and Information Engineering, Henan Normal University, Xinxiang 4530072Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210097
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WANG Xue-Lei, XU Wen-Na, XIAO Zhen-Jun 2008 Chin. Phys. Lett. 25 3196-3199
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Abstract

The charged top-pions have been predicted by the topcolour-assisted technicolour (TC2) model and the observation of the charged top-pions can be regarded as the robust evidence of the model. We study the charged top-pion and gluon associated production at the LHC, i.e., pp→gIIt+. The cross section of this process can reach tens of pb, even hundreds of pb, and there will be enough gIIt+ events produced at the LHC. Because the gIIt+ production is a flavour-changing (FC) process, the SM background can be greatly depressed. Furthermore, there exists an FC decay mode c¯b for the charged top-pions, and such decay mode can provide us with the typical signals to detect the charged top-pions. Therefore, it is hopeful to find the charged top-pions via the gIIt+ production at the LHC.

Keywords: 12.60.Nz      14.80.Mz      12.15.Lk      14.65.Ha     
Received: 04 January 2008      Published: 29 August 2008
PACS:  12.60.Nz (Technicolor models)  
  14.80.Mz  
  12.15.Lk (Electroweak radiative corrections)  
  14.65.Ha (Top quarks)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I9/03196
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