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Título: | Search for a dark matter candidate produced in association with a single top quark in pp̄ collisions at √s=1.96TeV |
Autor: | Aaltonen, T.; Álvarez González, B.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Palencia, Enrique CSIC ORCID; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID; CDF Collaboration | Fecha de publicación: | 2012 | Editor: | American Physical Society | Citación: | Physical Review Letters 108: 201802 (2012) | Resumen: | We report a new search for dark matter in a data sample of an integrated luminosity of 7.7fb -1 of Tevatron pp̄ 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 pp̄→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. © 2012 American Physical Society. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevLett.108.201802 | URI: | http://hdl.handle.net/10261/109019 | DOI: | 10.1103/PhysRevLett.108.201802 | Identificadores: | doi: 10.1103/PhysRevLett.108.201802 issn: 0031-9007 e-issn: 1079-7114 |
Aparece en las colecciones: | (IFCA) Artículos |
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Dark Matter Candidate.pdf | 306,35 kB | Adobe PDF | Visualizar/Abrir |
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