Prospects for spin-1 resonance search at 13 TeV LHC and the ATLAS diboson excess

Abe, Tomohiro; Kitahara, Teppei; Nojiri, Mihoko M.

doi:10.1007/jhep02(2016)084

Cited by 18 publications

(12 citation statements)

References 106 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CMS combined its semileptonic and nonleptonic data (which also showed 1-2σ excesses near 1. 8 Despite the low statistics, 5-10 events, of the ATLAS and CMS excesses, their number and proximity have inspired a number of theoretical papers variously proposing them to be due to production of heavy weak W and Z bosons [8,9,10,11], of heavy vector bosons associated with new strong dynamics at the TeV scale that is responsible for electroweak symmetry breaking [12,13,14], or of a new heavy scalar [15,16].…”

Section: Introductionmentioning

confidence: 99%

Heavy vector partners of the light composite Higgs

Lane

Pritchett

2016

Physics Letters B

View full text Add to dashboard Cite

If the Higgs boson H(125) is a composite due to new strong interactions at high energy, it has spin-one partners, ρ H and a H , analogous to the ρ and a 1 mesons of QCD. These bosons are heavy, their mass determined by the strong interaction scale. The strongly interacting particles light enough for ρ H and a H to decay to are the longitudinal weak bosons V L = W L , Z L and the Higgs boson H. These decay signatures are consistent with resonant diboson excesses recently reported near 2 TeV by ATLAS and CMS. We calculate σ×BR(ρ H → V V ) = few fb and σ×BR(a H → V H) = 0.5-1 fb at √ s = 8 TeV, increasing by a factor of 5-7 at 13 TeV. Other tests of the hypothesis of the strong-interaction nature of the diboson resonances are suggested. *

show abstract

Section: Introductionmentioning

confidence: 99%

Heavy vector partners of the light composite Higgs

Lane

Pritchett

2016

Physics Letters B

View full text Add to dashboard Cite

show abstract

“…Spin-0 explanations are discussed in context of a Higgs singlet [36], a two Higgs doublet model [37][38][39][40], sparticles [41,42] or composite scalars [43,44]. Spin-1 proposals include composite vector resonances [45][46][47][48][49][50][51][52], generic and effective field theory (EFT) models [53][54][55][56] as well as heavy W resonances [22][23][24][25][57][58][59][60][61][62][63][64][65][66][67][68][69], Z resonances [26,[70][71][72][73][74][75][76] or both [77][78][79]…”

Section: Jhep09(2016)036mentioning

confidence: 99%

Angular observables for spin discrimination in boosted diboson final states

Buschmann¹,

Yu²

2016

J. High Energ. Phys.

View full text Add to dashboard Cite

We 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 the differences in signal efficiencies and distortions of differential distributions resulting from various jet substructure techniques. We treat the 2 TeV diboson excess as a case study, but our results are generally applicable to any future discovery in the diboson channel. Scrutinizing ATLAS and CMS analyses at 8 TeV and 13 TeV, we find that the specific cuts employed in these analyses have a tremendous impact on the discrimination power between different signal hypotheses. We discuss modified cuts that can offer a significant boost to spin sensitivity in a post-discovery era. Even without altered cuts, we show that CMS, and partly also ATLAS, will be able to distinguish between spin 0, 1, or 2 new physics diboson resonances at the 2σ level with 30 fb −1 of 13 TeV data, for our 2 TeV case study.

show abstract

“…[8][9][10][11]. There are also studies considering bounds from the decay of the new resonance into heavy quarks or the Higgs boson, such as [12][13][14], but it should be noted that such considerations are model-dependent.…”

Section: Jhep11(2015)191mentioning

confidence: 99%

Testing ATLAS diboson excess with dark matter searches at LHC

Liew

Shirai

2015

J. High Energ. Phys.

View full text Add to dashboard Cite

Abstract:The ATLAS collaboration has recently reported a 2.6σ excess in the search for a heavy resonance decaying into a pair of weak gauge bosons. Only fully hadronic final states are being looked for in the analysis. If the observed excess really originates from the gauge bosons' decays, other decay modes of the gauge bosons would inevitably leave a trace on other exotic searches. In this paper, we propose the use of the Z boson decay into a pair of neutrinos to test the excess. This decay leads to a very large missing energy and can be probed with conventional dark matter searches at the LHC. We discuss the current constraints from the dark matter searches and the prospects. We find that optimizing these searches may give a very robust probe of the resonance, even with the currently available data of the 8 TeV LHC.

show abstract

Prospects for spin-1 resonance search at 13 TeV LHC and the ATLAS diboson excess

Cited by 18 publications

References 106 publications

Heavy vector partners of the light composite Higgs

Heavy vector partners of the light composite Higgs

Angular observables for spin discrimination in boosted diboson final states

Testing ATLAS diboson excess with dark matter searches at LHC

Contact Info

Product

Resources

About