Corpus ID: 106405650

# The Diboson Excess: Experimental Situation and Classification of Explanations; A Les Houches Pre-Proceeding

@article{Brehmer2015TheDE,
title={The Diboson Excess: Experimental Situation and Classification of Explanations; A Les Houches Pre-Proceeding},
author={Johann Brehmer and G. Brooijmans and Giacomo Cacciapaglia and Adri{\'a}n Carmona and Sekhar Chivukula and Antonio Delgado and Florian Goertz and Joanne L. Hewett and Andrey Katz and Joachim Kopp and Kenneth D. Lane and Adam Martin and Kirtimaan A. Mohan and D. M. Morse and Marco Nardecchia and Jos'e Miguel No and Alexandra Oliveira and C. S. Pollard and Mariano Quir{\'o}s and Thomas G. Rizzo and Jos{\'e} Mar{\'i}a Cerver{\'o} Santiago and Veronica Sanz and Elizabeth H. Simmons and Jamie Tattersall},
journal={arXiv: High Energy Physics - Phenomenology},
year={2015}
}
We examine the `diboson' excess at $\sim 2$ TeV seen by the LHC experiments in various channels. We provide a comparison of the excess significances as a function of the mass of the tentative resonance and give the signal cross sections needed to explain the excesses. We also present a survey of available theoretical explanations of the resonance, classified in three main approaches. Beyond that, we discuss methods to verify the anomaly, determining the major properties of the various surpluses… Expand
9 Citations

#### Figures and Tables from this paper

Combination of Run-1 exotic searches in diboson final states at the LHC
A bstractWe perform a statistical combination of the ATLAS and CMS results for the search of a heavy resonance decaying to a pair of vector bosons with the s=8$$\sqrt{s}=8$$ TeV datasets collectedExpand
Angular observables for spin discrimination in boosted diboson final states
• Physics
• 2016
A bstractWe investigate the prospects for spin determination of a heavy diboson resonance using angular observables. Focusing in particular on boosted fully hadronic final states, we detail both theExpand
A model for the LHC diboson excess
• Physics
• 2016
A bstractThe first run of the LHC showed hints of a new resonance with mass near 1.9 TeV decaying into electroweak gauge boson pairs as well as into dijets. While Run 2 has neither confirmed norExpand
Testing the 2-TeV resonance with trileptons
• Physics
• 2016
A bstractThe CMS collaboration has reported a 2.8σ excess in the search of the SU(2)R gauge bosons decaying through right-handed neutrinos into the two electron plus two jets (eejj) final states.Expand
Quark seesaw, vectorlike fermions and diphoton excess
• Physics
• 2015
A bstractWe present a possible interpretation of the recent diphoton excess reported by the early s=13$$\sqrt{s}=13$$ TeV LHC data in quark seesaw left-right models with vectorlike fermionsExpand
Automation of higher order corrections and their applications Beyond the Standard Model
• Physics
• 2016
This thesis is centred around GoSam 2.0, a framework for the automated calculation of one-loop corrections. Various improvements have been developed and implemented, including a standardizedExpand
On the interpretation of a possible ∼ 750 GeV particle decaying into γγ
• Physics
• 2015
A bstractWe consider interpretations of the recent ∼ 3σ reports by the CMS and ATLAS collaborations of a possible X (∼750 GeV) state decaying into γγ final states. We focus on the possibilities thatExpand
The light composite Higgs boson in strong extended technicolor
• Physics
• 2017
A bstractThis paper extends an earlier one describing the Higgs boson H as a light composite scalar in a strong extended technicolor model of electroweak symmetry breaking. The Higgs mass MH is madeExpand
Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks
A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons in proton-proton collisions collected by the CMS experiment at the LHC at s=8TeV, significantly extending previous searches. Expand

#### References

SHOWING 1-10 OF 159 REFERENCES
Interpretations of the ATLAS diboson anomaly
• Physics
• 2015
Abstract Recently, the ATLAS Collaboration recorded an interesting anomaly in diboson production with excesses at the diboson invariant mass around 2 TeV in boosted jets of all the WZ, W + W − , andExpand
Interpretations of the ATLAS diboson resonances
• Physics
• 2015
The ATLAS collaboration has reported excesses in searches for resonant diboson production decaying into hadronic final states. This deviation from the Standard Model prediction may be a signature ofExpand
Triboson interpretations of the ATLAS diboson excess
A bstractThe ATLAS excess in fat jet pair production is kinematically compatible with the decay of a heavy resonance into two gauge bosons plus an extra particle. This hypothesis would explain theExpand
Symmetry restored in dibosons at the LHC?
• Physics
• 2015
A bstractA number of LHC resonance search channels display an excess in the invariant mass region of 1.8–2.0 TeV. Among them is a 3.4σ excess in the fully hadronic decay of a pair of Standard ModelExpand
Diboson resonant production in non-custodial composite Higgs models
• Physics
• 2015
A bstractWe show that the recently reported excess in resonant diboson production can be explained in the context of non-custodial composite Higgs models. Dibosons are generated via the s-channelExpand
Interpreting a 2 TeV resonance in WW scattering
• Physics
• 2016
A diboson excess has been observed ---albeit with very limited statistical significance--- in $WW$, $WZ$ and $ZZ$ final states at the LHC experiments using the accumulated 8 TeV data. Assuming thatExpand
Unified Explanation of the eejj, Diboson, and Dijet Resonances at the LHC.
• Physics, Medicine
• Physical review letters
• 2015
We show that the excess events observed in a number of recent LHC resonance searches can be simultaneously explained within a nonsupersymmetric left-right inverse seesaw model for neutrino massesExpand
Composite Heavy Vector Triplet in the ATLAS Diboson Excess.
• Physics, Medicine
• Physical review letters
• 2015
It is found that the hypothesis that one vector triplet could account for the ATLAS excess in the boson-tagged jets analysis is not excluded and that the predicted signal is close to the expected sensitivity of several channels, some of which show an upper fluctuation of the observed limit while others do not. Expand
On the Compatibility of the Diboson Excess with a gg -Initiated Composite Sector
We propose that recent results by ATLAS and CMS searching for heavy resonances decaying into bosons could be a first hint of a new sector of pure gauge confining physics, possibly linked to theExpand
Scalar Hint from the Diboson Excess?
• Physics, Medicine
• Physical review letters
• 2015
This work suggests that a new weak singlet pseudoscalar particle η(WZ) may decay into two weak bosons while being produced in gluon fusion at the LHC, and studies an effective model based on the anomaly term as a well motivated phenomenological model. Expand