Article

# Pair production of charged Higgs bosonsin association with bottom quark pairs at the Large Hadron Collider

• ##### J. Rathsman
European Physical Journal C (Impact Factor: 5.25). 02/2004; 33(1):41-52. DOI: 10.1140/epjc/s2003-01529-1
Source: arXiv

ABSTRACT We study the process
gg® b[`(b)] H+ H-gg\to b\bar b H^ + H^-
at large
tanb\tan\beta
, where it represents the dominant production mode of charged Higgs boson pairs in a Type II 2-Higgs doublet model, including the minimal supersymmetric standard model. The ability to select this signal would in principle enable the measurements of some triple-Higgs couplings, which in turn would help understanding the structure of the extended Higgs sector. We outline a selection procedure that should aid in disentangling the Higgs signal from the main irreducible background. This exploits a signature made up by t\tau
-lepton and missing energytanb >~30\tan\beta\gtrsim30
and over a significant
MH±M_{H^\pm}
range above the top mass, a small signal emerges already at the Large Hadron Collider after 100 fb-1, ten times as much luminosity would be needed to perform accurate measurements of Higgs parameters in the above final state, rendering this channel a primary candidate to benefit from the so-called Super Large Hadron Collider option, for which a tenfold increase in instantaneous luminosity is currently being considered.

0 Bookmarks
·
52 Views
• Source
##### Article: Higgs boson self-couplings at the LHC as a probe of extended Higgs sectors
[Hide abstract]
ABSTRACT: A study of two-Higgs-doublet models (2HDM) in the decoupling limit reveals the existence of parameter configurations with a large triple-Higgs self-coupling as the only low-energy trace of the departure from a Standard Model (SM) Higgs sector. This observation encourages attempts to search for double Higgs production at the Large Hadron Collider (LHC) even in mass regions which have been shown to be very hard to probe in the context of SM-like Higgs self-couplings. In this document we consider the case of an Intermediate Mass Higgs (IMH) boson, with 120 GeV <= M_H <= 140 GeV, produced in pairs via vector-vector fusion, Higgs-strahlung and associate production with heavy-quarks and decaying into b anti-b pairs. After a detailed signal-to-background analysis, we confirm that the observation of a Higgs-pair signal is very challenging in the framework of the SM, even at the LHC with upgraded luminosity. In contrast, we verify that the sensitivity is sufficient to detect departures from the SM which would escape detection in the measurements of the single-Higgs production channels.
Journal of High Energy Physics 11/2004; · 5.62 Impact Factor
• Source
##### Article: Pair production of charged Higgs bosons in the Left-Right Twin Higgs model at the ILC and LHC
[Hide abstract]
ABSTRACT: Left-Right twin Higgs(LRTH) model predicts the existence of a pair of charged Higgs $\phi^{\pm}$. In this paper, we study the production of the charged Higgs bosons pair $\phi^{\pm}$ via the process $e^{+}e^{-}\to \phi^{+}\phi^{-}$ at the International Linear Collider(ILC). The numerical results show that the production rates are at the level of several tens fb, this process can produce the adequate distinct multi-jet final states and the SM background can be efficiently reduced. We also discuss the charged Higgs boson pair production via the process $q\bar{q}\to \phi^{+}\phi^{-}$ at the $CERN$ Large Hadron Collider(LHC) and estimate there production rates. We find that, as long as the charged Higgs bosons are not too heavy, they can be abundantly produced at the LHC. The possible signatures of these new particles might be detected at the ILC and LHC experiments.
European Physical Journal C 02/2007; · 5.25 Impact Factor
• Source
##### Article: Vector-boson production of light Higgs pairs in 2Higgs doublet models
[Hide abstract]
ABSTRACT: At the Large Hadron Collider, we prove the feasibility to detect pair production of the lightest CP-even Higgs boson h of Type II 2-Higgs Doublet Models through qq(') --> qq(')hh (vector-boson fusion). We also show that, through the hh --> 4b decay channel in presence of heavy-flavour tagging, further exploiting forward/backward jet sampling, one has direct access to the lambdaHhh triple Higgs coupling---which constrains the form of the Higgs potential.
Journal of High Energy Physics 01/2007; 12(12):075-075. · 5.62 Impact Factor