期刊
PHYSICS LETTERS B
卷 750, 期 -, 页码 247-251出版社
ELSEVIER
DOI: 10.1016/j.physletb.2015.09.028
关键词
Natural supersymmetry; Stops; LHC
资金
- MINECO (Spain) [FPA2013-44773-P]
- Consolider-Ingenio CPAN [CSD2007-00042]
- Spanish MINECO Centro de excelencia Severo Ochoa Program [SEV-2012-0249]
- JAE-Doc program
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) over tilde -> (X) over tilde W-0(1)(*)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. (C) 2015 The Authors. Published by Elsevier B.V.
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