Refining light stop exclusion limits with W+W- cross sections
If light supersymmetric top (stop) quarks are produced at the LHC and decay via on- or off-shell W-bosons they can be expected to contribute to a precision W+W− cross section measurement. Using the latest results of the CMS experiment, we revisit constraints on the stop quark production and find tha...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
15 September 2015
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| In: |
Physics letters
Year: 2015, Jahrgang: 750, Pages: 247-251 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2015.09.028 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2015.09.028 Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269315007030 
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| Verfasserangaben: | Krzysztof Rolbiecki, Jamie Tattersall |
MARC
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| 520 | |a If light supersymmetric top (stop) quarks are produced at the LHC and decay via on- or off-shell W-bosons they can be expected to contribute to a precision W+W− cross section measurement. Using the latest results of the CMS experiment, we revisit constraints on the stop quark production and find that this measurement can exclude portions of the parameter space not probed by dedicated searches. In particular we can exclude light top squarks up to 230 GeV along the line separating three- and four-body decays, t˜1→χ˜10W(⁎)b. We also study the exclusion limits in case when the branching ratio for these decays is reduced and show significant improvement over previously existing limits. | ||
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