Search for supersymmetry in events with at least three electrons or muons, jets, and missing transverse momentum in proton-proton collisions at √s=13 TeV
A search for new physics is carried out in events with at least three electrons or muons in any combination, jets, and missing transverse momentum. Results are based on the sample of proton-proton collision data produced by the LHC at a center-of-mass energy of 13 TeV and collected by the CMS exp...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Springer Nature
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65261/ http://irep.iium.edu.my/65261/ http://irep.iium.edu.my/65261/ http://irep.iium.edu.my/65261/1/65261_Search%20for%20supersymmetry%20in%20events_article.pdf http://irep.iium.edu.my/65261/2/65261_Search%20for%20supersymmetry%20in%20events_scopus.pdf |
| Summary: | A search for new physics is carried out in events with at least three electrons
or muons in any combination, jets, and missing transverse momentum. Results are based
on the sample of proton-proton collision data produced by the LHC at a center-of-mass
energy of 13 TeV and collected by the CMS experiment in 2016. The data sample analyzed
corresponds to an integrated luminosity of 35.9 fb−1
. Events are classified according to the
number of b jets, missing transverse momentum, hadronic transverse momentum, and the
invariant mass of same-flavor dilepton pairs with opposite charge. No significant excess
above the expected standard model background is observed. Exclusion limits at 95% confidence
level are computed for four different supersymmetric simplified models with pair
production of gluinos or third-generation squarks. In the model with gluino pair production,
with subsequent decays into a top quark-antiquark pair and a neutralino, gluinos with
masses smaller than 1610 GeV are excluded for a massless lightest supersymmetric particle.
In the case of bottom squark pair production, the bottom squark masses are excluded up
to 840 GeV for charginos lighter than 200 GeV. For a simplified model of heavy top squark
pair production, the et2 mass is excluded up to 720, 780, or 710 GeV for models with an
exclusive et2 → et1H decay, an exclusive et2 → et1Z decay, or an equally probable mix of those
two decays. In order to provide a simplified version of the analysis for easier interpretation,
a small set of aggregate signal regions also has been defined, providing a compromise
between simplicity and analysis sensitivity |
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