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https://hdl.handle.net/10316/109196
Título: | Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at √s = 8 Tev | Autor: | Santos, S. P. Amor dos Carvalho, J. Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Palavras-chave: | Hadron-Hadron Scattering | Data: | 2015 | Editora: | Springer Nature | Título da revista, periódico, livro ou evento: | Journal of High Energy Physics | Volume: | 2015 | Número: | 1 | Resumo: | Searches for heavy long-lived charged particles are performed using a data sample of 19.1 fb−1 from proton-proton collisions at a centre-of-mass energy of s=8$$ \sqrt{s}=8 $$ TeV collected by the ATLAS detector at the Large Hadron Collider. No excess is observed above the estimated background and limits are placed on the mass of long-lived particles in various supersymmetric models. Long-lived tau sleptons in models with gauge-mediated symmetry breaking are excluded up to masses between 440 and 385 GeV for tan β between 10 and 50, with a 290 GeV limit in the case where only direct tau slepton production is considered. In the context of simplified LeptoSUSY models, where sleptons are stable and have a mass of 300 GeV, squark and gluino masses are excluded up to a mass of 1500 and 1360 GeV, respectively. Directly produced charginos, in simplified models where they are nearly degenerate to the lightest neutralino, are excluded up to a mass of 620 GeV. R-hadrons, composites containing a gluino, bottom squark or top squark, are excluded up to a mass of 1270, 845 and 900 GeV, respectively, using the full detector; and up to a mass of 1260, 835 and 870 GeV using an approach disregarding information from the muon spectrometer. | URI: | https://hdl.handle.net/10316/109196 | DOI: | 10.1007/JHEP01(2015)068 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
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Searches-for-heavy-longlived-charged-particles-with-the-ATLAS-detector-in-protonproton-collisions-at-s--8-TevJournal-of-High-Energy-Physics.pdf | 1.05 MB | Adobe PDF | Ver/Abrir |
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