Search for bottom squarks in the baryon-number violating MSSM

We consider a scenario of a minimal supersymmetric standard model with R-parity violation, where the lightest supersymmetric particle is the lighter bottom squark (b˜1). We study the production of a bottom squark pair at the LHC and their subsequent decays through the baryon number violating operato...

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Bibliographic Details
Published in:Physical review. D 2017-08, Vol.96 (3), Article 035024
Main Authors: Bardhan, Debjyoti, Chakraborty, Amit, Choudhury, Debajyoti, Ghosh, Dilip Kumar, Maity, Manas
Format: Article
Language:English
Subjects:
Baryons
Large Hadron Collider
Leptons
Luminosity
Quarks
Standard model (particle physics)
Supersymmetry
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Summary:We consider a scenario of a minimal supersymmetric standard model with R-parity violation, where the lightest supersymmetric particle is the lighter bottom squark (b˜1). We study the production of a bottom squark pair at the LHC and their subsequent decays through the baryon number violating operators leading to a top pair with two light quarks. Looking for both semileptonic and fully hadronic (no leptons) final states, we perform cut-based as well as multivariate analyses (MVA) to estimate the signal significance at the 13 TeV run of the LHC. We find that a cut-based analysis can probe bottom squark mass up to ∼750 GeV, which may be extended up to ∼850 GeV using MVA with 300 fb−1 integrated luminosity. The fully hadronic final state, however, is not as promising.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.96.035024