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Light Stop Searches at the LHC in Events with two b-Jets and Missing Energy
High Energy Physics - Phenomenology · Submitted 24 Nov 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We show the size of the electroweak contributions as a function of the stop mass and present the LHC discovery reach in the stop-neutralino mass plane.
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
We propose a new method to discover light top squarks (stops) in the co-annihilation region at the Large Hadron Collider (LHC). The bino-like neutralino is the lightest supersymmetric particle (LSP) and the lighter stop is the next-to-LSP. Such scenarios can be consistent with electroweak baryogenesis and also with dark matter constraints. We consider the production of two stops in association with two b-quarks, including pure QCD as well as mixed electroweak-QCD contributions. The stops decay into a charm quark and the LSP. For a higgsino-like light chargino the electroweak contributions can exceed the pure QCD prediction. We show the size of the electroweak contributions as a function of the stop mass and present the LHC discovery reach in the stop-neutralino mass plane.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We propose a new method to discover light top squarks (stops) in the co-annihilation region at the Large Hadron Collider (LHC). | contribution 1.00 | 0.82 | 0.25 | asserted 0.88 |
| s1 | The bino-like neutralino is the lightest supersymmetric particle (LSP) and the lighter stop is the next-to-LSP. | background 0.99 | 0.12 | 0.03 | asserted 1.00 |
| s2 | Such scenarios can be consistent with electroweak baryogenesis and also with dark matter constraints. | background 0.68 | 0.11 | 0.04 | hedged possibility 0.99 |
| s3 | We consider the production of two stops in association with two b-quarks, including pure QCD as well as mixed electroweak-QCD contributions. | method 0.56 | 0.74 | 0.04 | asserted 0.93 |
| s4 | The stops decay into a charm quark and the LSP. | method 0.57 | 0.21 | 0.04 | asserted 1.00 |
| s5 | For a higgsino-like light chargino the electroweak contributions can exceed the pure QCD prediction. | result 0.97 | 0.51 | 0.06 | asserted 0.56 |
| s6 | We show the size of the electroweak contributions as a function of the stop mass and present the LHC discovery reach in the stop-neutralino mass plane. | result 0.65 | 0.95 | 0.33 | asserted 1.00 |
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The paper
Original abstract
We propose a new method to discover light top squarks (stops) in the co-annihilation region at the Large Hadron Collider (LHC). The bino-like neutralino is the lightest supersymmetric particle (LSP) and the lighter stop is the next-to-LSP. Such scenarios can be consistent with electroweak baryogenesis and also with dark matter constraints. We consider the production of two stops in association with two b-quarks, including pure QCD as well as mixed electroweak-QCD contributions. The stops decay into a charm quark and the LSP. For a higgsino-like light chargino the electroweak contributions can exceed the pure QCD prediction. We show the size of the electroweak contributions as a function of the stop mass and present the LHC discovery reach in the stop-neutralino mass plane.
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References
How the literature uses it
25 arXiv papers cite this in 36 sentences
Papers citing it · 25 sentences without a confident label
Uses its method or tool 1 paper
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Another method proposed to further suppress the background is by utilizing the two energetic tagged b jets [ref] .
Probing Light Stop Pairs at the LHC · Conclusion and discussions · 0.85
Uses its data or values 1 paper
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Also, the analysis of [ref] suggests stops produced in association with a pair of $b$ quarks can be discovered with 5$σ$ significance out to masses of $∼270$ GeV with 100 fb$^-1$ at LHC14.
Electroweak Baryogenesis and Colored Scalars · Collider Phenomenology · 0.83
Compares with it 1 paper
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The dashed red line in Fig. [ref] indicates that the two $b-$jet plus missing transverse energy signature [ref] is degraded less for larger mass splittings compared to our monojet signal.
Light Stop Searches at the LHC with Monojet Events · Discovery Potential at the LHC · 0.95
Cites it as background 7 papers
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Discovering stop has been studied in detail in several works, e.g., in [ref] .
Stop as a next-to-lightest supersymmetric particle in constrained MSSM · Stop NLSP at the LHC · 0.92
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Several novel methods were proposed to search for the compressed region at the collider [ref] .
Demystifying the compressed top squark region with kinematic variables · Introduction · 0.97
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Light stops have been widely studied in the recent literature by both the theoretical [ref] and experimental [ref] communities.
Light stop squarks and b-tagging · Introduction · 0.99
What it cites · 43 sentences without a confident label
Uses the method or tool of 5 papers
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The masses, couplings and branching ratios of the relevant sparticles are calculated with SPheno2.2.3 [ref] .
SPheno, a program for calculating supersymmetric spectra, SUSY particle decays and SUSY particle production at e+ e- colliders · Numerical tools · 1.00
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Our parton–level signal and background processes apart from $tt̅$ production are generated with Madgraph4.4.32 [ref] .
MadEvent: Automatic Event Generation with MadGraph · Numerical tools · 1.00
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Parton–level events are then interfaced with Herwig++2.4.2 [ref] for the hadron–level simulation.
Herwig++ Physics and Manual · Numerical tools · 1.00
Uses data or values from 1 paper
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The cross section for the $t t̅$ background has been taken from Ref. [ref] , which includes NLO corrections as well as resummation of next–to–leading threshold logarithms.
NLL resummation of the heavy-quark hadroproduction cross-section · Backgrounds · 1.00
Compares with 1 paper
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We note however, that different cuts for the monojet signal than those of Ref. [ref] might increase the monojet discovery reach [We did some estimates for the monojet signal and the most important backgrounds and found that less hard cuts on the monojet $p_T$ and on the $p̸_T$ lead in general to larger significancies.
Light Stop Searches at the LHC in Events with One Hard Photon or Jet and Missing Energy · Discovery Potential at the LHC · 0.91
Cites as support 7 papers
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These scenarios can be consistent with DM constraints [ref] , i.e. the thermal $χ̃_1^0$ relic density is equal to or lies below the observed DM density.
Dark Matter, Light Stops and Electroweak Baryogenesis · Introduction · 0.98
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These scenarios can be consistent with DM constraints [ref] , i.e. the thermal $χ̃_1^0$ relic density is equal to or lies below the observed DM density.
Baryogenesis, Electric Dipole Moments and Dark Matter in the MSSM · Introduction · 0.98
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A light stop with a mass of $m_t̃_1 ≲125$ GeV is vital for successful EW baryogenesis within the MSSM [ref] .
Bino-driven Electroweak Baryogenesis with highly suppressed Electric Dipole Moments · Introduction · 0.97
Cites as background 1 paper
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If low–energy supersymmetry (SUSY) [ref] is realized, detection of light supersymmetric particles may be around the corner [ref] .
It's On: Early Interpretations of ATLAS Results in Jets and Missing Energy Searches · Introduction · 0.85
Discussion
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