Search for scalar top quark production in p[bar over p] collisions at √s = 1.96 TeV
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CDF_Search for scalar top.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Date Issued
October 2012
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Aaltonen, T., B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, et al. “Search for Scalar Top Quark Production in p[bar over p] collisions at √s = 1.96 TeV.” J. High Energ. Phys. 2012, no. 10 (October 2012).
Version
Final published version
Abstract
We report on a search for the supersymmetric partner of the top quark (scalar top) decaying into a charm quark and a neutralino in p[¯ over p] collisions at √s = 1.96 TeV. The data sample, collected by the CDF II detector at the Fermilab Tevatron, corresponds to an integrated luminosity of 2.6 fb[superscript −1]. Candidate events are selected by requiring two or more jets and a large imbalance in the transverse momentum. To enhance the analysis sensitivity, at least one of the jets is required to be identified as originating from a charm quark using an algorithm specifically designed for this analysis. The selected events are in good agreement with standard model predictions. In the case of large mass splitting between the scalar top quark and the neutralino we exclude a scalar top quark mass below 180 GeV/c [superscript 2] at 95% confidence level.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1007/jhep10(2012)158
