  Observing light or heavy charged Higgs bosons $H^\pm$, lighter or heavier
than the top quark, would be instant evidence of physics beyond the Standard
Model. For this reason, in recent years searches for charged Higgs bosons have
been in the center of attention of current colliders such as the CERN Large
Hadron Collider (LHC). In spite of all efforts, no signal has been yet
observed. Especially, the results of CMS and ATLAS experiments have excluded a
large region in the MSSM $m_{H^+}-\tan\beta$ parameter space for
$m_{H^+}=80-160$ GeV corresponding to the entire range of $\tan\beta$ up to 60.
Therefore, it seems that one should concentrate on probing heavy charged Higgs
bosons ($m_{H^\pm}>m_t$) so in this context each new probing channel is
welcomed. In this work, we intend to present our proposed channel to search for
heavy charged Higgses through the study of scaled-energy distribution of
bottom-flavored mesons ($B$) inclusively produced in charged Higgs decay, i.e.,
$H^+\to t\bar{b}\to B+X$. Our study is carried out within the framework of the
generic two Higgs doublet model (2HDM) using the massless scheme where the zero
mass parton approximation is adopted for bottom quark.
