Decoding the mechanism for the origin of dark matter in the early universe using LHC data

Journal Article · Wed Oct 15 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.083523· OSTI ID:21254407

Feldman, Daniel; Zuowei, Liu; Nath, Pran ^[1]

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1. Department of Physics, Northeastern University, Boston, Massachusetts 02115 (United States)

It is shown that LHC data can allow one to decode the mechanism by which dark matter is generated in the early universe in supersymmetric theories. We focus on two of the major mechanisms for such generation of dark matter, which are known to be the stau coannihilation (stau co), where the neutralino is typically bino like and annihilation on the hyperbolic branch (HB), where the neutralino has a significant Higgsino component. An investigation of how one may discriminate between the stau-co region and the HB region using LHC data is given for the mSUGRA model. The analysis utilizes several signatures including multi leptons, hadronic jets, b tagging, and missing transverse momentum. A study of the supersymmetry signatures reveals several correlated smoking gun signals allowing a clear discrimination between the stau-co and the HB regions where dark matter in the early universe can originate.

• OSTI ID: 21254407
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 8 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
CERN LHC
HADRONS
LEPTONS
NONLUMINOUS MATTER
SUPERSYMMETRY
TRANSVERSE MOMENTUM
UNIVERSE