Four-lepton LHC events from MSSM Higgs boson decays into neutralino and chargino pairs

Abstract

Heavy neutral Higgs boson production and decay into neutralino and chargino pairs is studied at the Large Hadron Collider in the context of the Minimal Supersymmetric Standard Model. Higgs boson decays into the heavier neutralino and chargino states, i.e., H^0 or A^0 to tilde{chi}_i^0 tilde{chi}_j^0 (i,j = 2,3,4) as well as H^0 or A^0 to tilde{chi}_1^{pm} tilde{chi}_2^{mp}, tilde{chi}_2^+ tilde{chi}_2^- (all leading to four-lepton plus missing transverse energy final states), is found to improve the possibilities of discovering such Higgs states beyond those previously identified by considering H^0 or A^0 to tilde{chi}_2^0 tilde{chi}_2^0 decays only. In particular, H^0,A^0 bosons with quite heavy masses, approaching ~800 GeV in the so-called `decoupling region' where no clear SM signatures for the heavier MSSM Higgs bosons are known to exist, can now be discerned, for suitable but not particularly restrictive configurations of the low energy supersymmetric parameters. The high M_A discovery reach for the H^0 and A^0 may thus be greatly extended. Full event-generator level simulations, including realistic detector effects and analyses of all significant backgrounds, are performed to delineate the potential H^0,A^0 discovery regions. The wedgebox plot technique is also utilized to further analyze the 4l plus missing transverse energy signal and background events. This study marks the first thorough and reasonably complete analysis of this important class of MSSM Higgs boson signature modes. In fact, this is the first time discovery regions including all possible neutralino and chargino decay modes of the Higgs bosons have ever been mapped out.

43 pages, 12 figures

References in corpus (8)

• Electric Dipole Moments in the MSSM Reloaded
• Search for Heavy Neutral MSSM Higgs Bosons with CMS: Reach and Higgs-Mass Precision
• Proposal for a New Reconstruction Technique for SUSY Processes at the LHC
• New constraints on supersymmetric models from b -> s gamma
• Hidden Thresholds: A Technique for Reconstructing New Physics Masses at Hadron Colliders
• Wedgebox analysis of four-lepton events from neutralino pair production at the LHC
• Neutralino decay of MSSM neutral Higgs bosons
• Supersymmetry at the LHC and Beyond --Ultimate Targets--

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• Neutralino relic density from ILC measurements in the CPV MSSM
• Transverse mass and invariant mass observables for measuring the mass of a semi-invisibly decaying heavy particle
• Simplified models for resonant neutral scalar production with missing transverse energy final states
• Characterizing simplified models for heavy Higgs decays to supersymmetric particles
• Detecting Heavy Higgs Bosons from Natural SUSY at a 100 TeV Hadron Collider