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| Título: | Search for Pair Production of Supersymmetric Top Quarks in Dilepton Events from pp̅ Collisions at √s=1.96 TeV |
Autor: | Aaltonen, T.; Cabrera, Susana CSIC ORCID; Cuenca Almenar, Cristóbal CSIC; Álvarez González, B.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID | Fecha de publicación: | 23-jun-2010 | Editor: | American Physical Society | Citación: | Physical Review Letters 104(25): 251801 (2010) | Resumen: | We present the results of a search for pair production of the supersymmetric partner of the top quark (the top squark (t) over tilde (1)) decaying to a b quark and a chargino (chi) over tilde (+/-)(1) with a subsequent (chi) over tilde (+/-)(1) decay into a neutralino (chi) over tilde (0)(1), lepton l, and neutrino nu Using a data sample corresponding to 2.7 fb(-1) of integrated luminosity of p (p) over bar collisions at root s = 1: 96 TeV 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 (t) over tilde (1)(t) over tilde (1). We find no evidence for (t) over tilde (1)(t) over tilde (1) 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((X) over tilde (+/-)(1) -> (chi) over tilde (0)(1)l(+/-)nu). | Descripción: | 8 páginas, 2 figuras, 1 tabla.-- PACS numbers: 12.60.Jv, 14.65.Ha, 14.80.Ly.-- CDF Collaboration: et al. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevLett.104.251801 | URI: | http://hdl.handle.net/10261/28076 | DOI: | 10.1103/PhysRevLett.104.251801 | ISSN: | 0031-9007 |
| Aparece en las colecciones: | (IFIC) Artículos (IFCA) Artículos |
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| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| e251801.pdf | 254,48 kB | Adobe PDF |  Visualizar/Abrir |
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