• Corpus ID: 119298943

The compatibility of LHC Run 1 data with a heavy scalar of mass around 270\,GeV

  title={The compatibility of LHC Run 1 data with a heavy scalar of mass around 270\,GeV},
  author={Stefan Erich Von Buddenbrock and Nabarun Chakrabarty and Alan S. Cornell and Deepak Kar and Mukesh Kumar and Tanumoy Mandal and Bruce Mellado and Biswarup Mukhopādhyāẏa and Robert Graham Reed},
  journal={arXiv: High Energy Physics - Phenomenology},
The first run of the LHC was successful in that it saw the discovery of the elusive Higgs boson, a particle that is consistent with the SM hypothesis. There are a number of excesses in Run 1 ATLAS and CMS results which can be interpreted as being due to the existence of another heavier scalar particle. This particle has decay modes which we have studied using LHC Run 1 data. Using a minimalistic model, we can predict the kinematics of these final states and compare the prediction against data… 

Figures and Tables from this paper

The emergence of multi-lepton anomalies at the LHC and their compatibility with new physics at the EW scale

A recent study [1] has shown that a simplified model predicting a heavy scalar of mass 270 GeV (H ) that decays to a Standard Model (SM) Higgs boson in association with a scalar singlet of mass 150

Production of the Madala boson in association with top quarks

The Madala hypothesis is the prediction of a new heavy scalar, the Madala boson, that has had previous success in explaining several anomalies in LHC Run 1 and 2 data. In the literature, the Madala

The search for new physics in the diphoton decay channel and the upgrade of the Tile-Calorimeter electronics of the ATLAS detector.

The discovery of the Higgs boson at the Large Hadron Collider in Switzerland marks the beginning of a new era: Physics beyond the Standard Model (SM). A model is proposed to describe numerous Run I

Phenomenology of additional scalar bosons at the LHC

The confirmation of the Higgs boson in Run I data at the Large Hadron Collider (LHC) and the excesses in recent Run II data suggest scenarios beyond the Standard Model (SM). We pursue a study in a

Gamma rays and the LHC inspired dark matter

  • G. BeckS. Colafrancesco
  • Physics
    Proceedings of 5th Annual Conference on High Energy Astrophysics in Southern Africa — PoS(HEASA2017)
  • 2018
The Madala hypothesis was formulated to explain anomalies in LHC data from run-1. Subsequently, these anomalies have endured into run-2 and been strengthened. This makes the analysis of the proposal

Clues on the Majorana scale from scalar resonances at the LHC

In order to address the observation of the neutrino oscillations and the metastability of the Standard Model, we extend the fermion sector with two right-handed (i.e. sterile) neutrinos, and the

Di-Higgs enhancement by neutral scalar as probe of new colored sector

We study a class of models in which the Higgs pair production is enhanced at hadron colliders by an extra neutral scalar. The scalar particle is produced by the gluon fusion via a loop of new colored

Phenomenological signatures of additional scalar bosons at the LHC

We investigate the search prospects for new scalars beyond the standard model at the large hadron collider (LHC). In these studies two real scalars S and $$\chi $$χ have been introduced in a two

Constraints on a 2HDM with a singlet scalar and implications in the search for heavy bosons at the LHC

We study a two-Higgs doublet model extended with an additional singlet scalar (2HDM+S), and provide a brief introduction to the model and its parameters. Constraints are applied to the parameter

Novel collider and dark matter phenomenology of a top-philic Z′

A bstractWe consider extending the Standard Model by including an additional Abelian gauge group broken at low energies under which the right-handed top quark is the only effectively charged Standard



Search for a Higgs boson in the mass range from 145 to 1000 GeV decaying to a pair of W or Z bosons

A bstractA search for a heavy Higgs boson in the H → WW and H → ZZ decay channels is reported. The search is based upon proton-proton collision data samples corresponding to an integrated luminosity

Searches for heavy Higgs bosons in two-Higgs-doublet models and for t -> ch decay using multilepton and diphoton final states in pp collisions at 8 TeV

Searches are presented for heavy scalar (H) and pseudoscalar (A) Higgs bosons posited in the two doublet model (2HDM) extensions of the standard model (SM). These searches are based on a data sample

Lifting degeneracies in Higgs couplings using single top production in association with a Higgs boson

A bstractCurrent Higgs data show an ambiguity in the value of the Yukawa couplings to quarks and leptons. Not so much because of still large uncertainties in the measurements but as the result of

Search for a high-mass Higgs boson decaying to a W boson pair in pp collisions at s=8$$ \sqrt{s}=8 $$ TeV with the ATLAS detector

A bstractA search for a high-mass Higgs boson H is performed in the H → WW → ℓνℓν and H → WW → ℓνqq decay channels using pp collision data corresponding to an integrated luminosity of 20.3 fb−1

Handbook of LHC Higgs Cross Sections: 3. Higgs Properties

This Report summarizes the results of the activities in 2012 and the first half of 2013 of the LHC Higgs Cross Section Working Group. The main goal of the working group was to present the state of

Search for the associated production of the Higgs boson with a top-quark pair

A bstractA search for the standard model Higgs boson produced in association with a top-quark pair tt¯H$$ \left(\mathrm{t}\overline{\mathrm{t}}\mathrm{H}\right) $$ is presented, using data samples

The universal Higgs fit

A bstractWe perform a state-of-the-art global fit to all Higgs data. We synthesise them into a ‘universal’ form, which allows to easily test any desired model. We apply the proposed methodology to