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  Cornering light Neutralino Dark Matter at the LHC

Calibbi, L., Lindert, J. M., Ota, T., & Takanishi, Y. (2013). Cornering light Neutralino Dark Matter at the LHC. Journal of high energy physics: JHEP, 132(10): 132. doi:10.1007/JHEP10(2013)132.

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 Urheber:
Calibbi, Lorenzo, Autor
Lindert, Jonas M., Autor
Ota, Toshihiko1, Autor           
Takanishi, Yasutaka, Autor
Affiliations:
1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              

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Schlagwörter: High Energy Physics - Phenomenology, hep-ph,High Energy Physics - Experiment, hep-ex
 Zusammenfassung: We investigate the current status of the light neutralino dark matter scenario within the minimal supersymmetric standard model (MSSM) taking into account latest results from the LHC. A discussion of the relevant constraints, in particular from the dark matter relic abundance, leads us to a manageable simplified model defined by a subset of MSSM parameters. Within this simplified model we reinterpret a recent search for electroweak supersymmetric particle production based on a signature including multi-taus plus missing transverse momentum performed by the ATLAS collaboration. In this way we derive stringent constraints on the light neutralino parameter space. In combination with further experimental information from the LHC, such as dark matter searches in the monojet channel and constraints on invisible Higgs decays, we obtain a lower bound on the lightest neutralino mass of about 24 GeV. This limit is stronger than any current limit set by underground direct dark matter searches or indirect detection experiments. With a mild improvement of the sensitivity of the multi-tau search, light neutralino dark matter can be fully tested up to about 30 GeV.

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 Datum: 2013-10-22
 Publikationsstatus: Online veröffentlicht
 Seiten: 26 pages, 11 figures. v2: version published in JHEP
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Titel: Journal of high energy physics : JHEP
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: Bologna, Italy : Società italiana di fisica
Seiten: - Band / Heft: 132 (10) Artikelnummer: 132 Start- / Endseite: - Identifikator: ISSN: 1126-6708
CoNE: https://pure.mpg.de/cone/journals/resource/111021927548002