Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/48753
Título: | Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC |
Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
Palavras-chave: | Supersymmetry Long-lived particle R-hadron Limit |
Data: | 2011 |
Editora: | Elsevier 1 |
Revista: | Physics Letters B |
Citação: | Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., Onofre, A., . . . Collaboration, A. (2011). Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC. Physics Letters B, 701(1), 1-19. doi: 10.1016/j.physletb.2011.05.010 |
Resumo(s): | 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. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/48753 |
DOI: | 10.1016/j.physletb.2011.05.010 |
ISSN: | 0370-2693 |
e-ISSN: | 1873-2445 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S0370269311005041-main.pdf | 1,52 MB | Adobe PDF | Ver/Abrir |