Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-06-18
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 13 figures
Scientific paper
We study the $e^{\pm}\mu^{\mp} + E^{miss}_T$ and $l^+l^- + E^{miss}_T$ signatures $(l = e, \mu)$ for different values of $\tan\beta$ in the mSUGRA model. With $\tan\beta$ rising, we observe a characteristic change in the shape of dilepton mass spectra in $l^+l^- + E^{miss}_T $ versus $e^{\pm}\mu^{\mp}$ final states reflecting the decrease of $\tilde{\chi}^0_2 \to l^+l^- \tilde{\chi^0_1}$ branching ratio. We also study the non mSUGRA modifications of the CMS test point LM1 with arbitrary relations among gaugino and higgsino masses. For such modifications of the mSUGRA test point LM1 the number of lepton events depends rather strongly on the relations among gaugino and higgsino masses and in some modifications of the test point LM1 the signatures with leptons and $E_{T}^{miss}$ do not lead to the SUSY discovery and the single SUSY discovery signature remains the signature with $n \geq 2 jets + E^{miss}_T + no leptons$.
Andreev Yu.
Krasnikov Nikolai
Toropin A.
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