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Signatures of MSSM charged Higgs bosons via chargino-neutralino decay channels at the LHC | | Mike Bisset
; Monoranjan Guchait
; Stefano Moretti
; | | Date: |
21 Oct 2000 | | Journal: | Eur.Phys.J. C19 (2001) 143-154 | | Subject: | hep-ph | | Affiliation: | Tsinghua University), Monoranjan Guchait (DESY) and Stefano Moretti(RAL | | Abstract: | We assess the potential of detecting a charged Higgs boson of the MSSM at the LHC via its decays into a chargino and a neutralino. We focus our attention on the region of parameter space with $m_{H^{pm}} > m_t$ and $3 lsim tan(beta) lsim 10$, where identification of the $H^{pm}$ via other decay modes has proven to be ineffective. Searching for means to plug this hole, we simulate the decays $H^{pm} --> { ildechi}_1^{pm} { ildechi}_1^0$ and $H^{pm} --> { ildechi}_1^{pm} { ildechi}_2^0, { ildechi}_1^{pm} { ildechi}_3^0$ --- the former can yield a single hard lepton (from the chargino decay) while the latter can yield three leptons (from the chargino and neutralino decays). Coupled with the dominant top quark + charged Higgs boson production mode, the resulting signature is one or three hard, isolated leptons, substantial missing transverse momentum and a reconstructed (via a 3-jet invariant mass) top quark. The single lepton channel is swamped by background processes; however, with suitable cuts, a trilepton signal emerges. While such a signal suffers from a low number of surviving events (after cuts) and is dependent on several MSSM input parameters (notably $M_2$, $mu$, and slepton masses), it does fill at least some of the void left by previous investigations. | | Source: | arXiv, hep-ph/0010253 | | Services: | Forum | Review | PDF | Favorites | |
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