Study of the single neutral top - pion production process at γγ collider
نویسندگان
چکیده
γγ → Π0t is the major production mechanism of neutral top-pion at the linear colliders. In this paper, we calculate the cross section of the process γγ → Π0t and discuss the potential to observe the neutral top-pion via its various decay modes at the planned ILC. The study show that, among the various neutral top-pion production processes at the linear colliders, the cross section of γγ → Π0t is the largest one which can reach the level of 101−102 fb. Due to the existence of the tree-level flavor-changing coupling Π0t tc̄, γγ → Π0t → tc̄ can provide enough number of typical signals to identify the neutral top-pion with the clean SM background. Therefore, the process γγ → Π0t play an important role in searching for the neutral top-pion and test the TC2 model. PACS number(s): 12.60Nz,14.80.Mz,12.15.Lk,14.65.Ha E-mail:[email protected] Mailing address 1
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تاریخ انتشار 2008