  In this paper, the t-channel charged Higgs production at LHC is studied.
Production process is a t-channel single top event with charged Higgs exchange.
Therefore the signal is similar with Standard Model single top production in
terms of the final state. In the first step, the signal cross section is
calculated and compared to the other main production processes which are used
for a heavy charged Higgs search at LHC, i.e., pp -> tbH- and pp -> H+ -> tb.
In the next step, an event generation and analysis is applied on signal and
background events, in order to estimate the signal significance. The signal
cross section is typically smaller than the associated production (tbH-) and
resonance production (tb) by a factor of 10-3 and ranges from 10 fb to 1 fb for
charged Higgs mass from 200 to 500 GeV at tanbeta = 50. Due to the small cross
section of signal events and large SM background, the signal significance is
small even after a dedicated kinematic analysis and selection of events,
however, tanbeta values above 120 can be excluded at an integrated luminosity
of 3000 fb-1.
