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Abstract:

Hitherto unobserved long-lived massive particles with electric and/or colour charge are predicted by a range of theories which extend the Standard Model. In this Letter a search is performed at the ATLAS experiment for slow-moving charged particles produced in proton–proton collisions at 7 TeV centre-of-mass energy at the LHC, using a data-set corresponding to an integrated luminosity of 34 pb −1 . No deviations from Standard Model expectations are found. This result is interpreted in a framework of supersymmetry models in which coloured sparticles can hadronise into long-lived bound hadronic states, termed R-hadrons, and 95% CL limits are set on the production cross-sections of squarks and gluinos. The influence of R-hadron interactions in matter was studied using a number of different models, and lower mass limits for stable sbottoms and stops are found to be 294 and 309 GeV respectively. The lower mass limit for a stable gluino lies in the range from 562 to 586 GeV depending on the model assumed. Each of these constraints is the most stringent to date. © 2011 CERN

Registro:

Documento: Artículo
Título:Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC
Autor:Aad, G. et al.
Este artículo contiene 3043 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 3043 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Limit; Long-lived particle; R-hadron; Supersymmetry
Año:2011
Volumen:701
Número:1
Página de inicio:1
Página de fin:19
DOI: http://dx.doi.org/10.1016/j.physletb.2011.05.010
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_v701_n1_p1_Aad

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Citas:

---------- APA ----------
(2011) . Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 701(1), 1-19.
http://dx.doi.org/10.1016/j.physletb.2011.05.010
---------- CHICAGO ----------
Aad, G. "Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 701, no. 1 (2011) : 1-19.
http://dx.doi.org/10.1016/j.physletb.2011.05.010
---------- MLA ----------
Aad, G. "Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 701, no. 1, 2011, pp. 1-19.
http://dx.doi.org/10.1016/j.physletb.2011.05.010
---------- VANCOUVER ----------
Aad, G. Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2011;701(1):1-19.
http://dx.doi.org/10.1016/j.physletb.2011.05.010