The effect of composite resonances on Higgs decay into two photons

Hernández, A. E. Cárcamo; Dib, Claudio O.; Zerwekh, Alfonso R.

doi:10.1140/epjc/s10052-014-2822-6

Cited by 16 publications

(9 citation statements)

References 114 publications

(118 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The upper limit of this interval is determined by the maximum center of mass energy available at CLIC while the lower limit makes us sure that the resonance has escaped detection at the LHC. 4,[11][12][13] We focus on the process e + e − → µ + µ − which, at leading order, is described only by the interchange of a photon, a Z-boson and a ρ 0 in the s-channel.…”

Section: Resultsmentioning

confidence: 99%

“…Consequently, large values of g 2 , and vector resonances with masses above 2 TeV, make the new sector invisible at current LHC searches. [11][12][13] In the scalar sector, the spectrum is straightforward since no mass mixing term arise due to the Z 2 symmetry. Consequently, near the minimum of the potential, the scalar doublets can be parameterized as:…”

Section: Model Remindermentioning

confidence: 99%

See 1 more Smart Citation

A dark vector resonance at CLIC *

Callender

Zerwekh

2019

Chinese Phys. C

Self Cite

View full text Add to dashboard Cite

One of the main problems in Particle Physics is to understand the origin and nature of Dark Matter. An exciting possibility is to consider that the Dark Matter belongs to a new complex but hidden sector. In this paper, we assume the existence of a strongly interacting dark sector consisting on a new scalar doublet and new vector resonances, in concordance with a model recently proposed by our group. 4 Since in a previous work it was found that it is very challenging to find the new vector resonances at the LHC, here we study the possibility of finding them at the a future Compact Linear Collider (CLIC) running at √ s = 3 TeV. We consider two distinct scenarios: when the non-standard scalars are heavy, the dark resonance is intense enough to make its discovery possible at CLIC when the resonance mass is in the range [2000, 3000] GeV. In the second scenario, when the non-standard scalars are light, the new vector boson is too broad to be recognized as a resonance and is not detectable except when the mass of the scalars is close to (but smaller than) a half of the resonance mass and the scale of the dark sector is high. In all the positive cases, less than a tenth of the maximum integrated luminosity is needed to reach the discovery level. Finally, we also comment about the mono-Z

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Model Remindermentioning

confidence: 99%

A dark vector resonance at CLIC *

Callender

Zerwekh

2019

Chinese Phys. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…The normalization given by (5.11) for h → γγ was also used in [76,120,[123][124][125][126][127][128]. The ratio R γγ has been measured by CMS and ATLAS collaborations with the best fit signals [129,130]: Correlations plots have been obtained to observe the behavior of the R γγ parameter as function of scalar masses and W gauge boson mass.…”

Section: Higgs Diphoton Decay Rate Constraintsmentioning

confidence: 99%

Fermion masses and mixings and some phenomenological aspects of a 3-3-1 model with linear seesaw mechanism

2019

View full text Add to dashboard Cite

We propose a viable model based on the SU (3)C × SU (3)L × U (1)X gauge group supplemented by the S4 family symmetry and other auxiliary cyclic symmetries, whose spontaneous breaking gives rise to the observed pattern of SM fermion masses and mixing angles. In the proposed model the small light active neutrino masses are generated from a linear seesaw mechanism mediated by three Majorana neutrinos. The model is capable of reproducing the experimental values of the physical observables of both quark and lepton sectors. Our model is predictive in the quark sector having 9 effective parameters that allow to successfully reproduce the four CKM parameters and the six Standard Model (SM) quark masses. In the SM quark sector, there is particular scenario, motivated by naturalness arguments, which allows a a good fit for its ten observables, with only six effective parameters. We also study the single heavy scalar production via gluon fusion mechanism at proton-proton collider. Our model is also consistent with the experimental constraints arising from the Higgs diphoton decay rate.

show abstract

“…The normalization given by (5.9) for h → γγ was also used in [127,195,[198][199][200][201][202]. The ratio R γγ has been measured by CMS and ATLAS with the best fit signals [203,204]:…”

Section: Higgs Diphoton Ratementioning

confidence: 99%

A 3-3-1 model with low scale seesaw mechanisms

2019

Self Cite

View full text Add to dashboard Cite

We construct a viable 3-3-1 model with two SU (3)L scalar triplets, extended fermion and scalar spectrum, based on the T family symmetry and other auxiliary cyclic symmetries, whose spontaneous breaking yields the observed pattern of SM fermion mass spectrum and fermionic mixing parameters. In our model the SM quarks lighter than the top quark, get their masses from a low scale Universal seesaw mechanism, the SM charged lepton masses are produced by a Froggatt-Nielsen mechanism and the small light active neutrino masses are generated from an inverse seesaw mechanism. The model is consistent with the low energy SM fermion flavor data and successfully accommodates the current Higgs diphoton decay rate and predicts charged lepton flavor violating decays within the reach of the forthcoming experiments.

show abstract

The effect of composite resonances on Higgs decay into two photons

Cited by 16 publications

References 114 publications

A dark vector resonance at CLIC *

A dark vector resonance at CLIC *

Fermion masses and mixings and some phenomenological aspects of a 3-3-1 model with linear seesaw mechanism

A 3-3-1 model with low scale seesaw mechanisms

Contact Info

Product

Resources

About