Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detection of heavy charged Higgs bosons in $e^+e^-\to t\bar b H^-$
  production at future Linear Colliders   Heavy charged Higgs bosons ($H^\pm$) of a Type II 2-Higgs Doublet Model
(2HDM) can be detected at future electron-positron Linear Colliders (LCs) even
when their mass is larger than half the collider energy. The single Higgs mode
$e^+e^-\to t\bar b H^- + ~{\rm{c.c.}} \to 4b +{\rm{j}}{\rm{j}} + \ell +
p_T^{\rm{miss}}$ (where j represents a jet and with $\ell=e,\mu$) contributes
to extend the discovery reach of $H^\pm$ states into the mass region
$M_{H^\pm}\gsim \sqrt s/2$, where the well studied pair production channel
$e^+e^-\to H^-H^+$ is no longer available. With a technique that allows one to
reconstruct the neutrino four-momentum in the decay $t\to b W^+\to b
\ell^+\nu$, one can suppress the initially overwhelming main irreducible
background due to $e^+e^-\to t\bar t b\bar b$ (via a gluon splitting into
$b\bar b$ pairs) to a negligible level. However, for currently foreseen
luminosities, one can establish a statistically significant $H^\pm$ signal only
over a rather limited mass region, of 20 GeV or so, beyond $M_{H^\pm}\approx
\sqrt s/2$, for very large or very small values of $\tan\beta$ and provided
high $b$-tagging efficiency can be achieved.

28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci