Open AccessRecoil detection of the lightest neutralino in MSSM singlet extensions
Author(s) -
V. Barger,
Paul Langacker,
Ian Lewis,
Mat McCaskey,
Gabe Shaughnessy,
Brian Yencho
Publication year - 2007
Publication title -
physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology
Language(s) - English
Resource type - Journals
eISSN - 1550-7998
pISSN - 1550-2368
DOI - 10.1103/physrevd.75.115002
Subject(s) - neutralino , physics , particle physics , minimal supersymmetric standard model , supersymmetry , lightest supersymmetric particle , recoil , parameter space , cmb cold spot , standard model (mathematical formulation) , dark matter , large hadron collider , superpartner , nuclear physics , quantum mechanics , statistics , cosmic microwave background , anisotropy , history , mathematics , archaeology , gauge (firearms)
We investigate the correlated predictions of singlet extended MSSM models fordirect detection of the lightest neutralino with its cosmological relicdensity. To illustrate the general effects of the singlet, we take heavysleptons and squarks. We apply LEP, $(g-2)_\mu$ and perturbativity constraints.We find that the WMAP upper bound on the cold dark matter density limits muchof the parameter space to regions where the lightest neutralino can bediscovered in recoil experiments. The results for the NMSSM and UMSSM aretypically similar to the MSSM since their light neutralinos have similarcompositions and masses. In the n/sMSSM the neutralino is often very light andits recoil detection is within the reach of the CDMS II experiment. In general,most points in the parameter spaces of the singlet models we consider areaccessible to the WARP experiment.Comment: 30 pages, 11 figure
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