Phenomenology of a stabilized modulus

Goldberger, Walter D.; Wise, Mark B.

doi:10.1016/s0370-2693(00)00099-x

Cited by 395 publications

(484 citation statements)

References 16 publications

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“…A simple example is that of a singlet scalar, φ, which has been extensively discussed (see e.g., [5][6][7][8][9][10][11][12]). To allow for production from gluon fusion at the LHC the singlet must couple to extra vectorlike colored matter, yφΨΨ, necessitating the introduction of many new degrees of freedom.…”

Section: Higgs Signals From Singletsmentioning

confidence: 99%

Light signals from a lighter Higgs

Fox

Weiner

2018

J. High Energ. Phys.

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With the Higgs search program already quite mature, there is the exciting possibility of discovering a new particle with rates near that of the SM Higgs. We consider models with a signal in γγ below the SM Higgs mass. We discuss singlet models with additional vectorlike matter, but argue that a Type-I two Higgs doublet model can more easily provide detectable rates. In such scenarios, in regions of moderate-to-strong fermiophobia, the enhanced γγ branching ratio allows signals from V H+VBF production to yield σ × BR γγ comparable to total SM rates and would thus be detectable. Light H production can be dominated via rare top decays t → bH + → bW * H, which provides an even more efficient means of production. We also consider this in the context of various Higgs anomalies, specifically the recent 2.9 σ (local) CMS excess at 95 GeV, the LEP Higgs excess near the same mass, and excesses in tth searches at Tevatron and LHC. We find regions of parameter space that can meet all simultaneously. An implication of the Type-I scenario is that any γγ excess should be associated with additional elements that could reduce background, including b-jets, forward jets or signs of vector boson production.

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Section: Higgs Signals From Singletsmentioning

confidence: 99%

Light signals from a lighter Higgs

Fox

Weiner

2018

J. High Energ. Phys.

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“…The superpotential terms can arise from both gaugino condensation [29] and tree level dynamics, like in the supersymmetric version of the Goldberger-Wise mechanism [44,58]. Compatibly with the AdS/CFT interpretation the first term can be interpreted as coming from a deformation by chiral operator of conformal dimension n. Then unitarity requires n > 1.…”

Section: Strongly Warped Casementioning

confidence: 99%

Gravitational quantum corrections in warped supersymmetric brane worlds

Gregoire¹,

Rattazzi²,

Scrucca³

et al. 2005

Nuclear Physics B

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We study gravitational quantum corrections in supersymmetric theories with warped extra dimensions. We develop for this a superfield formalism for linearized gauged supergravity. We show that the 1-loop effective Kähler potential is a simple functional of the KK spectrum in the presence of generic localized kinetic terms at the two branes. We also present a simple understanding of our results by showing that the leading matter effects are equivalent to suitable displacements of the branes. We then apply this general result to compute the gravity-mediated universal soft mass m 2 0 in models where the visible and the hidden sectors are sequestered at the two branes. We find that the contributions coming from radion mediation and brane-to-brane mediation are both negative in the minimal set-up, but the former can become positive if the gravitational kinetic term localized at the hidden brane has a sizable coefficient. We then compare the features of the two extreme cases of flat and very warped geometry, and give an outlook on the building of viable models.

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“…All fields in the bulk 5-dimensional spacetime can be regarded as Kaluza-Klein modes, which in their own right can be considered as 4-dimensional fields on the brane with an infinite tower of masses. The mass spectrum m n of the Kaluza-Klein modes in Φ is given [14,15] by roots of…”

Section: Effective Potential In 5-dimensional Ads Space At Nonzermentioning

confidence: 99%

Quantum (in)stability of a brane-world universe at nonzero temperature

et al. 2001

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We consider the quantum effects of bulk matter (scalars, spinors) in the Randall-Sundrum AdS 5 brane-world at nonzero temperature. The thermodynamic energy (modulus potential) is evaluated at low and high temperatures. This potential has an extremum which could be a minimum in some cases (for example, for a single fermion). That suggests a new dynamical mechanism to stabilize the thermal AdS 5 brane-world. It is shown that the brane separation * Electronic address: iver.h.brevik@mtf.ntnu.no † Electronic address: milton@mail.nhn.ou.edu ‡ Electronic address: nojiri@cc.nda.ac.jp § On leave from Tomsk State Pedagogical University, 634041 Tomsk, RUSSIA. Electronic address: odintsov@ifug5.ugto.mx 1 required to solve the hierarchy scale problem may occur at a quite low temperature. A natural generalization in terms of the AdS/CFT correspondence (through the supergravity thermal contribution) is also possible.98.80. Hw,04.50.+h,11

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Phenomenology of a stabilized modulus

Cited by 395 publications

References 16 publications

Light signals from a lighter Higgs

Light signals from a lighter Higgs

Gravitational quantum corrections in warped supersymmetric brane worlds

Quantum (in)stability of a brane-world universe at nonzero temperature

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