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Abstract:

In models of anomaly-mediated supersymmetry breaking (AMSB), the lightest chargino is predicted to have a lifetime long enough to be detected in collider experiments. This letter explores AMSB scenarios in pp collisions at (Formula Presented) = 7 TeV by attempting to identify decaying charginos which result in tracks that appear to have few associated hits in the outer region of the tracking system. The search was based on data corresponding to an integrated luminosity of 1.02 fb − 1 collected with the ATLAS detector in 2011. The pT spectrum of candidate tracks is found to be consistent with the expectation from Standard Model background processes and constraints on the lifetime and the production cross section were obtained. In the minimal AMSB framework with m 3/2 < 32 TeV, m 0 < 1.5 TeV, tanβ = 5 and μ > 0, a chargino having mass below 92 GeV and a lifetime between 0.5 ns and 2 ns is excluded at 95 % confidence level. © CERN for the benefit of the ATLAS collaboration 2012.

Registro:

Documento: Artículo
Título:Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at √s=7 TeV
Autor:Aad, G. et al.
Este artículo contiene 3017 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 3017 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2012
Volumen:72
Número:4
Página de inicio:1
Página de fin:20
DOI: http://dx.doi.org/10.1140/epjc/s10052-012-1993-2
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v72_n4_p1_Aad

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Citas:

---------- APA ----------
(2012) . Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at √s=7 TeV. European Physical Journal C, 72(4), 1-20.
http://dx.doi.org/10.1140/epjc/s10052-012-1993-2
---------- CHICAGO ----------
Aad, G. "Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at √s=7 TeV" . European Physical Journal C 72, no. 4 (2012) : 1-20.
http://dx.doi.org/10.1140/epjc/s10052-012-1993-2
---------- MLA ----------
Aad, G. "Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at √s=7 TeV" . European Physical Journal C, vol. 72, no. 4, 2012, pp. 1-20.
http://dx.doi.org/10.1140/epjc/s10052-012-1993-2
---------- VANCOUVER ----------
Aad, G. Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at √s=7 TeV. Eur. Phys. J. C. 2012;72(4):1-20.
http://dx.doi.org/10.1140/epjc/s10052-012-1993-2