Document Type
Article
Publication Date
6-23-2010
Abstract
We present the results of a search for pair production of the supersymmetric partner of the top quark (the top squark t̃1) decaying to a b quark and a chargino χ̃1± with a subsequent χ̃1± decay into a neutralino χ̃10, lepton ℓ, and neutrino ν. Using a data sample corresponding to 2.7fb-1 of integrated luminosity of pp̄ collisions at √s=1.96TeV collected by the CDF II detector, we reconstruct the mass of top squark candidate events and fit the observed mass spectrum to a combination of standard model processes and t̃1t̃̄1 signal. We find no evidence for t̃1t̃̄1 production and set 95% C.L. limits on the masses of the top squark and the neutralino for several values of the chargino mass and the branching ratio B(χ̃1±→χ̃10ℓ±ν). © 2010 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Recommended Citation
Aaltonen, T., Adelman, J., Akimoto, T., Álvarez González, B., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., Apollinari, G., Apresyan, A., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Aurisano, A., Azfar, F., Badgett, W., Barbaro-Galtieri, A., Barnes, V., Barnett, B., Barria, P., Bartsch, V., Bauer, G., Beauchemin, P., Bedeschi, F., Beecher, D., & Behari, S. (2010). Search for pair production of supersymmetric top quarks in dilepton events from pp̄ collisions at √s=1.96TeV. Physical Review Letters, 104 (25) https://doi.org/10.1103/PhysRevLett.104.251801