Detection of heavy charged Higgs bosons in e+ e- -> t anti-b H- production at future linear colliders
Detection of heavy charged Higgs bosons in e+ e- -> t anti-b H- production at future linear colliders
Heavy charged Higgs bosons (H±) 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? ? t¯bH?+ c.c. ? 4b+jj++pmiss
T (where j represents a jet and with
= e, ?) contributes to extend the discovery reach of H± states into the mass region MH± ?s/2, where
the well studied pair production channel e+e? ? H?H+ is no longer available. With a technique that
allows one to reconstruct the neutrino four-momentum in the decay t ? bW+ ? b+?, one can suppress
the initially overwhelming main irreducible background due to e+e? ? t¯tb¯b (via a gluon splitting into b¯b
pairs) to a negligible level. However, for currently foreseen luminosities, one can establish a statistically
significant H± signal only over a rather limited mass region, of 20 GeV or so, beyond MH± ? ?s/2, for
very large or very small values of tan ? and provided high b-tagging efficiency can be achieved.
157-163
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
May 2004
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Moretti, S.
(2004)
Detection of heavy charged Higgs bosons in e+ e- -> t anti-b H- production at future linear colliders.
The European Physical Journal C, 34, .
(doi:10.1140/epjc/s2004-01668-9).
Abstract
Heavy charged Higgs bosons (H±) 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? ? t¯bH?+ c.c. ? 4b+jj++pmiss
T (where j represents a jet and with
= e, ?) contributes to extend the discovery reach of H± states into the mass region MH± ?s/2, where
the well studied pair production channel e+e? ? H?H+ is no longer available. With a technique that
allows one to reconstruct the neutrino four-momentum in the decay t ? bW+ ? b+?, one can suppress
the initially overwhelming main irreducible background due to e+e? ? t¯tb¯b (via a gluon splitting into b¯b
pairs) to a negligible level. However, for currently foreseen luminosities, one can establish a statistically
significant H± signal only over a rather limited mass region, of 20 GeV or so, beyond MH± ? ?s/2, for
very large or very small values of tan ? and provided high b-tagging efficiency can be achieved.
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Published date: May 2004
Identifiers
Local EPrints ID: 57478
URI: http://eprints.soton.ac.uk/id/eprint/57478
ISSN: 1434-6044
PURE UUID: 40703aae-663e-4b59-a835-f07f690966ee
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Date deposited: 15 Aug 2008
Last modified: 13 Mar 2019 20:34
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