MSSM Higgs boson searches at the Tevatron and the LHC: Impact of different benchmark scenarios |
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Authors: | M Carena S Heinemeyer C E M Wagner G Weiglein |
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Institution: | (1) Theoretical Physics Department, Fermilab, IL 60510-0500 Batavia, USA;(2) CERN TH Division, Department of Physics, 1211 Geneva 23, Switzerland;(3) HEP Division, Argonne National Lab., 9700 Cass Ave., IL 60439 Argonne, USA;(4) Enrico Fermi Institute, University of Chicago, 5640 Ellis Ave., IL 60637 Chicago, USA;(5) IPPP, University of Durham, Durham DH1 3LE, UK |
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Abstract: | The Higgs boson search has shifted from LEP2 to the Tevatron and will subsequently move to the LHC. The current limits from
the Tevatron and the prospective sensitivities at the LHC are often interpreted in specific MSSM scenarios. For heavy Higgs
boson production and subsequent decay into
or τ+τ–, the present Tevatron data allow one to set limits in the MA–tan β plane for small MA and large tan β values. Similar channels have been explored for the LHC, where the discovery reach extends to higher values
of MA and smaller tan β. Searches for MSSM charged Higgs bosons, produced in top decays or in association with top quarks, have
also been investigated at the Tevatron and the LHC. We analyze the current Tevatron limits and prospective LHC sensitivities.
We discuss how robust they are with respect to variations of the other MSSM parameters and possible improvements of the theoretical
predictions for Higgs boson production and decay. It is shown that the inclusion of supersymmetric radiative corrections to
the production cross sections and decay widths leads to important modifications of the present limits on the MSSM parameter
space. The impact on the region where only the lightest MSSM Higgs boson can be detected at the LHC is also analyzed. We propose
to extend the existing benchmark scenarios by including additional values of the higgsino mass parameter μ. This affects only
slightly the search channels for a SM-like Higgs boson, while having a major impact on the searches for non-standard MSSM
Higgs bosons. |
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