# Search for a Dark Matter Candidate Produced in Association with a Single Top Quark in pp̅ Collisions at √s=1.96 TeV

Abstract : We report a new search for dark matter in a data sample of an integrated luminosity of 7.7fb-1 of Tevatron pp¯ collisions at s=1.96TeV, collected by the CDF II detector. We search for production of a dark-matter candidate, D, in association with a single top quark. We consider the hadronic decay mode of the top quark exclusively, yielding a final state of three jets with missing transverse energy. The data are consistent with the standard model; we thus set 95% confidence level upper limits on the cross section of the process pp¯→t+D as a function of the mass of the dark-matter candidate. The limits are approximately 0.5 pb for a dark-matter particle with mass in the range of 0-150GeV/c2.
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Journal articles
Physical Review Letters, American Physical Society, 2012, 108, pp.201802. <10.1103/PHYSREVLETT.108.201802>
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http://hal.in2p3.fr/in2p3-00699489
Contributor : Sylvie Florès <>
Submitted on : Monday, May 21, 2012 - 9:20:57 AM
Last modification on : Thursday, April 23, 2015 - 2:04:27 PM

### Citation

T. Aaltonen, B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, et al.. Search for a Dark Matter Candidate Produced in Association with a Single Top Quark in pp̅ Collisions at √s=1.96 TeV. Physical Review Letters, American Physical Society, 2012, 108, pp.201802. <10.1103/PHYSREVLETT.108.201802>. <in2p3-00699489>

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