Low mass neutralino dark matter in minimal supergravity and more general models in the light of LHC data

Journal Article · Tue Nov 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.84.095006· OSTI ID:21608047

Bhattacharyya, Nabanita; Choudhury, Arghya; Datta, Amitava ^[1]

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1. Indian Institute of Science Education and Research, Kolkata, Mohanpur Campus, PO: BCKV Campus Main Office, Mohanpur - 741252, Nadia, West Bengal (India)

The b{tau}jEeT signal at the ongoing LHC experiments is simulated with Pythia in the minimal supergravity (mSUGRA) and other models of supersymmetry (SUSY) breaking. Special attention is given to the compatibility of this signature with the low mass neutralino dark matter (LMNDM) scenario consistent with the Wilkinson Microwave Anisotropy Probe data. In the mSUGRA model the above signal as well as the LMNDM scenario are strongly disfavored due to the constraints from the ongoing SUSY searches at the LHC. This tension, however, originates from the model dependent correlations among the parameters in the strong and electroweak sectors of mSUGRA. That there is no serious conflict between the LMNDM scenario and the LHC data is demonstrated by constructing generic phenomenological models such that the strong sector is unconstrained or mildly constrained by the existing LHC data and parameters in the electroweak sector, unrelated to the strong sector, yield dark matter relic density consistent with the Wilkinson Microwave Anisotropy Probe data. The proposed models, fairly insensitive to the conventional SUSY searches in the jets+Ee{sub T} and other channels, yield observable signal in the suggested channel for L > or approx. 1 fb{sup -1} of data. They are also consistent with the LMNDM scenario and can be tested by the direct dark matter search experiments in the near future. Some of these models can be realized by nonuniversal scalar and gaugino masses at the grand unified theory scale.

• OSTI ID: 21608047
• Journal Information: Physical Review. D, Particles Fields, Vol. 84, Issue 9; Other Information: DOI: 10.1103/PhysRevD.84.095006; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
CERN LHC
COMPATIBILITY
CORRELATIONS
DENSITY
GRAND UNIFIED THEORY
MASS
MICROWAVE RADIATION
NONLUMINOUS MATTER
SIMULATION
SUPERGRAVITY
SUPERSYMMETRY
SYMMETRY BREAKING
ACCELERATORS
CYCLIC ACCELERATORS
ELECTROMAGNETIC RADIATION
FIELD THEORIES
MATHEMATICAL MODELS
MATTER
PARTICLE MODELS
PHYSICAL PROPERTIES
QUANTUM FIELD THEORY
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STORAGE RINGS
SYMMETRY
SYNCHROTRONS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES