Light stop/sbottom pair production searches in the NMSSM

Abstract

In this work, we study the constraints on the scenario of light stops and sbottoms in the next-to-minimal supersymmetric standard model (NMSSM), especially by a 125 GeV Higgs boson discovery and the LHC bounds on supersymmetry. The constraints from dark matter detections are also taken into account. From the parameter scan, we find that the NMSSM can well accommodate a light Higgs boson around 125 GeV and decay patterns. We would like to stress that the LHC direct supersymmetry searches with b-tagging are very powerful and can set strong bounds on many NMSSM parameter points with light stops and sbottoms. We find $\tilde{t}\to b{\tilde{\chi }}_1^{+}$ is a very promising channel for light stop detection if the mass splitting between ${\tilde{\chi }}_1^{+}$ and ${\tilde{\chi }}_1^0$ is very small. It is also pointed out that in order to close the parameter space of light stops and sbottoms, new search strategies for signal channels such as $pp\to {\tilde{t}}_1{\tilde{t}}_1\to t\bar{t}hh{\tilde{\chi }}_1^0{\tilde{\chi }}_1^0$ and $pp\to {\tilde{b}}_1{\tilde{b}}_1\to t\bar{t}{W}^{+}{W}^{-}{\tilde{\chi }}_1^0{\tilde{\chi }}_1^0$ may be necessary.

43 pages, 18 figs

References in corpus (34)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• Dark Matter Results from 225 Live Days of XENON100 Data
• micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
• Higgs After the Discovery: A Status Report
• Supersymmetry, Naturalness, and Signatures at the LHC
• Strong constraints on the rare decays Bs -> mu+ mu- and B0 -> mu+ mu-
• On measuring the masses of pair-produced semi-invisibly decaying particles at hadron colliders
• Improved Limits on Spin-Dependent WIMP-Proton Interactions from a Two Liter CF${}_3$I Bubble Chamber
• Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at sqrt(s) = 7 TeV
• Confronting the MSSM and the NMSSM with the Discovery of a Signal in the two Photon Channel at the LHC
• Stop the Top Background of the Stop Search
• Scalar Particle Contribution to Higgs Production via Gluon Fusion at NLO
• Higgs Boson Production via Gluon Fusion: Squark Loops at NLO QCD
• NSUSY fits
• The 125 GeV Higgs in the NMSSM in light of LHC results and astrophysics constraints
• Search for direct top squark pair production in final states with one isolated lepton, jets, and missing transverse momentum in sqrt(s) = 7 TeV pp collisions using 4.7 fb-1 of ATLAS data
• Can neutralinos in the MSSM and NMSSM scenarios still be light?
• NLO QCD bottom corrections to Higgs boson production in the MSSM
• Enhanced $h\to \gamma \gamma$ rate in MSSM singlet extensions
• Search for the decay Bs0 -> mu mu with the ATLAS detector
• Search for B_s to mu^+ mu^- and B^0 to mu^+ mu^- decays
• Light Stop Searches at the LHC in Events with One Hard Photon or Jet and Missing Energy
• Search for light scalar top quark pair production in final states with two leptons with the ATLAS detector in sqrt(s) = 7 TeV proton-proton collisions
• Search for supersymmetry in pp collisions at sqrt(s) = 7 TeV in final states with missing transverse momentum and b-jets with the ATLAS detector
• The two-loop QCD amplitude gg -> h,H in the Minimal Supersymmetric Standard Model
• Light Stop Decay in the MSSM with Minimal Flavour Violation
• SUSY Stops at a Bump
• The apparent excess in the Higgs to di-photon rate at the LHC: New Physics or QCD uncertainties?
• Many faces of low mass neutralino dark matter in the unconstrained MSSM, LHC data and new signals
• Combined search for the standard model Higgs boson decaying to b bbar using the D0 Run II data set
• Combined search for the standard model Higgs boson decaying to a bb pair using the full CDF data set
• Optimising Stop Naturalness

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• Probing the CP-even Higgs Sector via $H_3\to H_2{H}_1$ in the Natural NMSSM
• Closing up a light stop window in natural SUSY at LHC
• Detecting light stop pairs in coannihilation scenarios at the LHC
• A Toolkit of the Stop Search via the Chargino Decay
• Natural NMSSM confronting with the LHC7-8
• LHC constraints on M_1/2 and m_0 in the semi-constrained NMSSM
• Two Light Stops in the NMSSM and the LHC
• Second Stop and Sbottom Searches with a Stealth Stop
• Sbottom discovery via mixed decays at the LHC