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- W2964312043 abstract "In this talk I discuss some aspects of the phenomenology of a moderately light charged Higgs ($H^pm$) with a mass $gts 130$ GeV, lighter than the top quark, at the LHC. A charged Higgs in this mass range is still allowed in next-to-minimal Supersymmetric Standard Model (NMSSM) at low $tan beta$ as well as in CP-violating (cp) Minimal Supersymmetric Standard Model (MSSM) for a certain choice of cp parameters, still respecting all the LEP-II bounds. In both the cases, the $H^pm$ has a large branching ratio in the $W^pm phi$ channel, where $phi$ denotes a generic Higgs which is dominantly pseudoscalar and hence may be substantially lighter than the LEP-II mass bound. This $phi$ decays dominantly into a $b bar b$ pair. Thus production of $H^pm$ in the top decay gives a striking $t bar t$ signal at the LHC, where one of the top quarks decays into the $bb bar b W$ channel, via $t to b H^pm, H^pm to phi$ and $phi to b bar b$. The characteristic correlation between the $b bar b$, $b bar b W$ and $b b bar b W$ invariant mass peaks helps reduce the Standard Model (SM) background very effectively. For these low values of $tan beta$ the $H^pm to tau nu_tau $ channel does not provide any reach for the $H^pm$. Thus this is a signal for both a light charged $H^pm$ and a light $phi$, which is mostly pseudoscalar in nature and decays dominantly into a $b bar b$ pair." @default.
- W2964312043 created "2019-07-30" @default.
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- W2964312043 date "2007-01-01" @default.
- W2964312043 modified "2023-09-27" @default.
- W2964312043 title "Moderately light charged Higgs in cp MSSM and NMSSM" @default.
- W2964312043 hasPublicationYear "2007" @default.
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