Study The Charged Top-pion Production Process At The LHC Colliders

Up to now, in the Particle Physics the Standard Model (SM) which describes the elementary particles and their interactions has successfully been tested by the present experiments. However, the mechanism of electroweak symmetry breaking (EWSB) and the source of quality have not been fully explained ,and there are the problems of triviality and unnaturalness, etc. The thing is that the Higgs which plays key role in producing the mass of the particles has not been found at the experiment . So , the SM can only be regarded as one effective theory at low energy scale, thus there are reasons to question for people that there should exist new physics beyond the Standard Model at higher energy .The TC2 is one more ideal candidates of new physics models beyond the standard model , it not only interpret the EWSB and resolve the problem of heavy top quark. The TC2 predicts some new particles, such as the pseudo Goldstone bosons, top-pions (Π_t~0 ,Π_t~±) ,top-higgs boson ( ht 0) , and the new gauge boson ( Z '), which can be seen as the typical particles of the TC2 model . Therefore we are able to verify the TC2 model by studying these typical particles , thus that can provide one significant approach to examine the Standard Model and identify different new physics models .The large hadron collider (LHC) which has been running has the features of high energy and high brightness . To find the Higgs particle and the new physics beyond the SM is an important goal of the LHC. So the phenomenological research of the TC2 and the charged top-pion's generational mechanism can supply one theoretical direction for LHC. In this text we systematically research the production of the charged top-pion at the LHC through some processes. Research details : (1) bg→tΠ_t~-(2)gg→btΠ_t~-(3)b b→Π_t~-W~+(4)g g→Π_t~-W~+(5)c b→Π_t~-→bt. We can find these processes may be ideal pathes at which we explore the charged top-pion by analysis above details.