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Abstract:

Many extensions of the Standard Model posit the existence of heavy particles with long lifetimes. In this Letter, results are presented of a search for events containing one or more such particles, which decay at a significant distance from their production point, using a final state containing charged hadrons and an associated muon. This analysis uses a data sample of proton-proton collisions at s=7TeV corresponding to an integrated luminosity of 4.4 fb −1 collected in 2011 by the ATLAS detector operating at the Large Hadron Collider. Results are interpreted in the context of R-parity violating supersymmetric scenarios. No events in the signal region are observed and limits are set on the production cross section for pair production of supersymmetric particles, multiplied by the square of the branching fraction for a neutralino to decay to charged hadrons and a muon, based on the scenario where both of the produced supersymmetric particles give rise to neutralinos that decay in this way. However, since the search strategy is based on triggering on and reconstructing the decay products of individual long-lived particles, irrespective of the rest of the event, these limits can easily be reinterpreted in scenarios with different numbers of long-lived particles per event. The limits are presented as a function of neutralino lifetime, and for a range of squark and neutralino masses. © 2012 CERN

Registro:

Documento: Artículo
Título:Search for long-lived, heavy particles in final states with a muon and multi-track displaced vertex in proton-proton collisions at √s=7 TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2916 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2916 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2013
Volumen:719
Número:4-5
Página de inicio:280
Página de fin:298
DOI: http://dx.doi.org/10.1016/j.physletb.2013.01.042
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v719_n4-5_p280_Aad

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Citas:

---------- APA ----------
(2013) . Search for long-lived, heavy particles in final states with a muon and multi-track displaced vertex in proton-proton collisions at √s=7 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 719(4-5), 280-298.
http://dx.doi.org/10.1016/j.physletb.2013.01.042
---------- CHICAGO ----------
Aad, G. "Search for long-lived, heavy particles in final states with a muon and multi-track displaced vertex in proton-proton collisions at √s=7 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 719, no. 4-5 (2013) : 280-298.
http://dx.doi.org/10.1016/j.physletb.2013.01.042
---------- MLA ----------
Aad, G. "Search for long-lived, heavy particles in final states with a muon and multi-track displaced vertex in proton-proton collisions at √s=7 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 719, no. 4-5, 2013, pp. 280-298.
http://dx.doi.org/10.1016/j.physletb.2013.01.042
---------- VANCOUVER ----------
Aad, G. Search for long-lived, heavy particles in final states with a muon and multi-track displaced vertex in proton-proton collisions at √s=7 TeV with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2013;719(4-5):280-298.
http://dx.doi.org/10.1016/j.physletb.2013.01.042