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

European Physical Journal C (Impact Factor: 5.44). 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
, 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
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.

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    ABSTRACT: We compute the cross section for pair production of charged Higgs bosons at the LHC and compare the three production mechanisms. The bottom-parton scattering process is computed to next-to-leading order (NLO), and the validity of the bottom-parton approach is established in detail. The light-flavor Drell-Yan cross section is evaluated at NLO as well. The gluon-fusion process through a one-loop amplitude is then compared with these two results. We show how a complete sample of events could look, in terms of total cross sections and distributions of the heavy final states.
    Physical review D: Particles and fields 06/2005; 71(11):115014-115014. DOI:10.1103/PhysRevD.71.115014 · 4.86 Impact Factor


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