The light stop quark with small stop-neutralino difference in the MSSM [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy. High Energy Physics Division, 2005.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 5 pages : digital, PDF file
Additional Creators:: Fermi National Accelerator Laboratory, United States. Department of Energy. High Energy Physics Division, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

The MSSM can explain electro-weak symmetry breaking if one scalar top quark (stop) is light. In addition, in this framework, the neutralino is a good dark matter candidate and for small stop-neutralino mass differences dm{sub i} = 30 GeV, co-annihilation plays an important role to match the results from WMAP and SDSS for the relic density in the universe. In this scenario, the stops mainly decays into charm and neutralino, making its discovery difficult at hadron colliders due to background and trigger limitations. They present results for the discovery reach of the ILC for a DM candidate as low as 0(5 GeV) based on a realistic experimental simulation. Moreover, the stop parameters could be measured with high precision.

Report Numbers:

E 1.99:snowmass-2005-alcpg0317
snowmass-2005-alcpg0317

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Published through SciTech Connect.
12/01/2005.
"snowmass-2005-alcpg0317"
Presented at: 2005 International Linear Collider Physics and Detector Workshop and 2nd ILC Accelerator Workshop. Snowmass, Colorado, 14-27 Aug 2005.
Freitas, A.; Milstene, C.; Carena, Marcela S.; Sopczak, A.; Finch, A.; Kluge, Hannelies.

Funding Information:

AC02-07CH11359

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