Search for Higgs Bosons in SUSY cascade decays and neutralino dark matter.

Journal Article · Fri Jun 24 04:00:00 EDT 2011 · Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRevD.83.115022· OSTI ID:1018905

Gori, S; Schwaller, P; Wagner, C E. M. ^[1]

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1. High Energy Physics

The minimal supersymmetric extension of the standard model (MSSM) is a well-motivated theoretical framework, which contains an extended Higgs sector, including a light Higgs with standard model-like properties in most of the parameter space. Because of the large QCD background, searches for such a Higgs, decaying into a pair of bottom quarks, are very challenging at the LHC. It has been long realized that the situation may be ameliorated by searching for Higgs bosons in supersymmetric decay chains. Moreover, it has been recently suggested that the b{bar b} decay channel may be observed in standard production channels by selecting boosted Higgs bosons, which may be easily identified from the QCD background. Such boosted Higgs bosons are frequent in the MSSM, since they are produced from decays of heavy colored supersymmetric particles. Previous works have emphasized the possibility of observing boosted Higgs bosons in the light Higgsino region. In this work, we study the same question in the regions of parameter space consistent with a neutralino dark matter relic density, analyzing its dependence on the nonstandard Higgs boson, slepton, and squark masses, as well as on the condition of gaugino mass unification. In general, we conclude that, provided sleptons are heavier than the second lightest neutralinos, the presence of boosted Higgs is a common MSSM feature, implying excellent prospects for observation of the light MSSM Higgs boson in the near future.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1018905
• Report Number(s): ANL-HEP-PR-11-17
• Journal Information: Phys. Rev. D, Journal Name: Phys. Rev. D Journal Issue: 11 ; Jun. 24, 2011 Vol. 83; ISSN 1550-7998
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHAINS
DECAY
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PRODUCTION
QUANTUM CHROMODYNAMICS
QUARKS
SPARTICLES
STANDARD MODEL