Unravelling tth via the matrix element method.

@article{Artoisenet2013UnravellingTV,
  title={Unravelling tth via the matrix element method.},
  author={Pierre Artoisenet and Priscila de Aquino and Fabio Maltoni and Olivier Mattelaer},
  journal={Physical review letters},
  year={2013},
  volume={111 9},
  pages={
          091802
        }
}
Associated production of the Higgs boson with a top-antitop pair is a key channel to gather further information on the nature of the newly discovered boson at the LHC. Experimentally, however, its observation is very challenging due to the combination of small rates, difficult multijet final states, and overwhelming backgrounds. In the standard model, the largest number of events is expected when h→bb, giving rise to a W+ W- bbbb signature, deluged in tt + jets. A promising strategy to improve… 

Figures and Tables from this paper

Multi-Lepton Signals of Top-Higgs Associated Production

We evaluate the potential to measure ttbar H associated production at the LHC using non-resonant multi-lepton final states in conjunction with two or more b-tags. The multi-lepton ttbar H signal

On the ratio of ttbb and ttjj cross sections at the CERN Large Hadron Collider

Triggered by ongoing experimental analyses, we report on a study of the cross section ratio sigma(pp -> ttbb)/sigma(pp -> ttjj) at the next-to-leading order in QCD, focusing on both present and

Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production

A bstractIn the upcoming LHC run we will be able to probe the structure of the loopinduced Higgs-gluon coupling through kinematics. First, we establish state-of-the-art simulations with up to two

Testing naturalness at 100 TeV

A bstractSolutions to the electroweak hierarchy problem typically introduce a new symmetry to stabilize the quadratic ultraviolet sensitivity in the self-energy of the Higgs boson. The new symmetry

The Matrix Element Method at next-to-leading order QCD using the example of single top-quark production at the LHC

Analyses in high energy physics aim to put the Standard Model---the commonly accepted theory---to test. For convincing conclusions, analysis methods are needed which offer an unambiguous comparison

Soft gluon resummation for associated t(cid:22)tH production at the LHC

: We perform resummation of soft gluon corrections to the total cross section for the process pp ! t (cid:22) tH . The resummation is carried out at next-to-leading-logarithmic (NLL) accuracy using

8D likelihood effective Higgs couplings extraction framework in h → 4ℓ

A bstractWe present an overview of a comprehensive analysis framework aimed at performing direct extraction of all possible effective Higgs couplings to neutral electroweak gauge bosons in the decay

Laboratory-frame observables for probing the top-Higgs boson interaction

We investigate methods to explore the CP nature of the t (t) over barh coupling at the LHC, focusing on associated production of the Higgs boson with a t (t) over bar pair. We first discuss the

Identifying hadronically-decaying vector bosons and top quarks in ATLAS

Hadronic decays of vector bosons and top quarks are increasingly important to the ATLAS physics program, both in measurements of the Standard Model and searches for new physics. At high energies,

References

SHOWING 1-10 OF 39 REFERENCES

For the CDF Collaboration

This paper presents a measurement of J/ψ,ψ ′ differential cross sections in p¯ p collisions at √ s = 1.8 TeV. The cross sections are measured above 4 GeV/c in the central region (|η| < 0.6) using the

ATLAS Collaboration

Et al

A large population-based survey of veterans and nondeployed controls found evidence of a deployment-related Gulf War syndrome by factor analysis in Air Force veterans and controls.

and G

  • Soyez, Eur.Phys.J. C72, 1896
  • 2012

A and V

Phys

  • Rev. D 84, 114017
  • 2011

Europhys

  • Lett. 96, 11 001
  • 2011

JHEP 1207

  • 036
  • 2012

and M

  • Spannowsky, Phys.Rev.Lett. 104, 111801
  • 2010

JHEP 1211

  • 043
  • 2012