Higgs bosons in warped space, from the bulk to the brane

Frank, Mariana; Pourtolami, Nima; Toharia, Manuel

doi:10.1103/physrevd.87.096003

Cited by 14 publications

(32 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While this paper was in writing, the work [66] appeared, in which similar questions as in the present work were addressed. While we have no objections to the analytical calculations presented in that paper, we disagree with the interpretation of the results obtained by these authors.…”

Section: Jhep01(2014)173mentioning

confidence: 97%

5D perspective on Higgs production at the boundary of a warped extra dimension

Malm

Neubert

Novotny

et al. 2014

J. High Energ. Phys.

108

View full text Add to dashboard Cite

A comprehensive, five-dimensional calculation of Higgs-boson production in gluon fusion is performed for both the minimal and the custodially protected RandallSundrum (RS) model, with Standard Model fields propagating in the bulk and the scalar sector confined on or near the IR brane. For the first time, an exact expression for the gg → h amplitude in terms of the five-dimensional fermion propagator is derived, which includes the full dependence on the Higgs-boson mass. Various results in the literature are reconciled and shown to correspond to different incarnations of the RS model, in which the Higgs field is either localized on the IR brane or is described in terms of a narrow bulk state. The results in the two scenarios differ in a qualitative way: the gg → h amplitude is suppressed in models where the scalar sector is localized on the IR brane, while it tends to be enhanced in bulk Higgs models. In both cases, effects of higher-dimensional operators contributing to the gg → h amplitude at tree level are shown to be numerically suppressed under reasonable assumptions. There is no smooth cross-over between the two scenarios, since the effective field-theory description breaks down in the transition region. A detailed phenomenological analysis of Higgs production in various RS scenarios is presented, and for each scenario the regions of parameter space already excluded by LHC data are derived.

show abstract

Section: Jhep01(2014)173mentioning

confidence: 97%

5D perspective on Higgs production at the boundary of a warped extra dimension

Malm

Neubert

Novotny

et al. 2014

J. High Energ. Phys.

108

View full text Add to dashboard Cite

show abstract

“…• In non-pNGB Higgs models where the Yukawas are all O(1) and anarchic, the YỸ * contribution to c g,γ , which is not suppressed by partial compositeness, yields sizable O(1) effects on radiative Higgs couplings from composite partners of the first and second generations (and bottom) SM flavors, thus probing compositeness scales up to O(10) TeV [76][77][78][79]. Moreover, in this case, the net prediction of the model is obtained only after summing over a large tower of strong sector resonances 6 which are not captured by the two-site description of eq.…”

Section: Jhep09(2013)090mentioning

confidence: 99%

“…6 In the five dimensional dual description [80,81], the contribution of the strong dynamics is supported by resonances whose mass is comparable with the inverse Higgs width in the bulk [74,[76][77][78][79].…”

Section: Jhep09(2013)090mentioning

confidence: 99%

Modified Higgs physics from composite light flavors

Delaunay

Grojean

Pérez

2013

J. High Energ. Phys.

View full text Add to dashboard Cite

We point out that Higgs rates into gauge bosons can be significantly modified in composite pseudo Nambu-Goldstone boson (pNGB) Higgs models if quarks belonging to the first two generation are relatively composite objects as well. Although the lightness of the latter a priori screen them from the electroweak symmetry breaking sector, we show, in an effective two-site description, that their partners can lead to order one shifts in radiative Higgs couplings to gluons and photons. Moreover, due to the pseudo-Goldstone nature of the Higgs boson, the size of these corrections is completely controlled by the degree of compositeness of the individual light quarks. The current measurements of flavor-blind Higgs decay rates at the LHC thus provide an indirect probe of the flavor structure of the framework of pNGB Higgs compositeness.

show abstract

“…Warped extra dimensional models were shown to provide new contributions to the Higgs production rate through gluon fusion which could conflict with the collider data [74,[92][93][94].…”

Section: Introductionmentioning

confidence: 99%

“…It is interesting that the parameter space for which the neutrino plateau is most favorable coincides with the region where small KK masses satisfy bounds coming from flavor and electroweak precision measurements [99,100] and constraints from Higgs phenomenology [93].…”

Section: Fermion Masses In Warped Spacementioning

confidence: 99%

Fermion masses and mixing in general warped extra dimensional models

et al. 2015

Self Cite

View full text Add to dashboard Cite

We analyze fermion masses and mixing in a general warped extra dimensional model, where all the Standard Model (SM) fields, including the Higgs, are allowed to propagate in the bulk. In this context, a slightly broken flavor symmetry imposed universally on all fermion fields, without distinction, can generate the full flavor structure of the SM, including quarks, charged leptons and neutrinos. For quarks and charged leptons, the exponential sensitivity of their wave-functions to small flavor breaking effects yield naturally hierarchical masses and mixing as it is usual in warped models with fermions in the bulk. In the neutrino sector, the exponential wave-function factors can be flavor-blind and thus insensitive to the small flavor symmetry breaking effects, directly linking their masses and mixing angles to the flavor symmetric structure of the 5D neutrino Yukawa couplings. The Higgs must be localized in the bulk and the model is naturally more successful in generalized warped scenarios where the metric background solution is different than AdS 5 . We study these features in two simple frameworks, flavor complimentarily, and flavor democracy, which provide specific predictions and correlations between quarks and leptons, testable as more precise data in the neutrino sector becomes available. a mariana.frank@concordia.ca b

show abstract

Higgs bosons in warped space, from the bulk to the brane

Cited by 14 publications

References 70 publications

5D perspective on Higgs production at the boundary of a warped extra dimension

5D perspective on Higgs production at the boundary of a warped extra dimension

Modified Higgs physics from composite light flavors

Fermion masses and mixing in general warped extra dimensional models

Contact Info

Product

Resources

About