Chinese Physics C > 2002, Vol. 26 > Issue(12): 1209-1213

Searching for Neutral Toppion in TC2 Model via a Flavor-Changing Process

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

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Abstract：
We study a flavor-changing toppion production process e+e-→tcΠ0t in the topcolorassisted technicolor(TC2) model. The studies show that, with high centre of mass energy in TESLA collider, the production cross section of e+e-→tcΠ0t is about 0.1 fb in most parameter regions of TC2 model and a few tens events of toppion can be produced each year. The resonance effect can enhance the cross section to a few fb when toppion mass is small. With clean background, the toppion events can possibly be detected at TESLA collider. On the other hand, we find that there exists a narrow peak in the toppion-charm invariant mass distribution which could be clearly detected. Therefore, the toppion production process e+e-→tcΠ0t provides a unique chance to detect toppion events and test the TC2 model.

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ZHANG Jin-Yu, WAN Ling-De, WANG Xue-Lei, YANG Yue-Ling and LI Bing-Zhong. Searching for Neutral Toppion in TC2 Model via a Flavor-Changing Process[J]. Chinese Physics C, 2002, 26(12): 1209-1213.

ZHANG Jin-Yu, WAN Ling-De, WANG Xue-Lei, YANG Yue-Ling and LI Bing-Zhong. Searching for Neutral Toppion in TC2 Model via a Flavor-Changing Process[J]. Chinese Physics C, 2002, 26(12): 1209-1213. shu

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Received: 2002-05-30
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Searching for Neutral Toppion in TC2 Model via a Flavor-Changing Process

Corresponding author:WANG Xue-Lei,

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

Received Date:2002-05-30
Accepted Date:1900-01-01
Available Online:2002-12-05

Abstract:We study a flavor-changing toppion production process e+e-→tcΠ0t in the topcolorassisted technicolor(TC2) model. The studies show that, with high centre of mass energy in TESLA collider, the production cross section of e+e-→tcΠ0t is about 0.1 fb in most parameter regions of TC2 model and a few tens events of toppion can be produced each year. The resonance effect can enhance the cross section to a few fb when toppion mass is small. With clean background, the toppion events can possibly be detected at TESLA collider. On the other hand, we find that there exists a narrow peak in the toppion-charm invariant mass distribution which could be clearly detected. Therefore, the toppion production process e+e-→tcΠ0t provides a unique chance to detect toppion events and test the TC2 model.