Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-02-14
Phys.Atom.Nucl. 65 (2002) 1341-1351; Yad.Fiz. 65 (2002) 1374-1384
Physics
High Energy Physics
High Energy Physics - Phenomenology
1 latex (35 pages), 4 eps (figures) files
Scientific paper
10.1134/1.1495646
We investigate squark and gluino pair production at LHC (CMS) with subsequent decays into quarks, leptons and LSP in models with effective supersymmetry where third generation of squarks is relatively light while the first two generations of squarks are heavy. We consider the general case of nonuniversal gaugino masses. Visibility of signal by an excess over SM background in (n \geq 2)jets + (m \geq 0)leptons + E^{miss}_T events depends rather strongly on the relation between LSP, second neutralino, gluino and squark masses and it decreases with the increase of LSP mass. We find that for relatively heavy gluino it is very difficult to detect SUSY signal even for light 3^{rd} generation squarks (m_{\tilde q_3}\le 1 TeV) if the LSP mass is closed to the 3^{rd} generation squark mass.
Bityukov S. I.
Krasnikov N. V.
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