Using the e^± μ^∓ + E^miss_T and l⁺l^- + E^miss_T Signatures in the Search for Supersymmetry and Constraining the MSSM model at LHC

2007/06/18 by Yu. Andreev, Nikolai Krasnikov, Andreev, Yu. +4
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.0706.2578

26 pages, 13 figures

arxiv created 2007/06/18 · openalex publication_date 2007/06/18 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

Abstract

We study the e^±μ^∓ + E^miss_T and l⁺l^- + E^miss_T signatures (l = e, μ) for different values of tanβ in the mSUGRA model. With tanβ rising, we observe a characteristic change in the shape of dilepton mass spectra in l⁺l^- + E^miss_T versus e^±μ^∓ final states reflecting the decrease of χ⁰₂ → l⁺l^- χ⁰₁ 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 ≥ 2 jets + E^miss_T + no leptons.

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