Unparticle signals with a few particles

Pérez-Victoria, M.

doi:10.1088/1126-6708/2009/01/011

Cited by 12 publications

(7 citation statements)

References 33 publications

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“…To mimic a continuum, one can adjust the AdS curvature radius, R, such that R 1/M 5 and ∆m KK ≤ Γ H , the Higgs width. This is similar to a Padé approximation of the continuum [63].…”

Section: Jhep02(2020)026supporting

confidence: 57%

Quantum Critical Higgs: from AdS5 to colliders

Shirazi

Terning

2020

J. High Energ. Phys.

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We examine distinctive signatures of Quantum Critical Higgs models at the LHC and future higher energy colliders. In these models the Higgs boson is part of a conformal sector that is softly broken at a threshold scale, and generically the scaling dimension of the Higgs is larger than in the Standard Model. In particular we examine the gg → H → ZZ, gg → H → γγ, and gg → Z → HZ channels to see how the cross sections deviate from the Standard Model in the high invariant mass region. In order to perform the calculations we use 5D duals of Quantum Critical Higgs models using the AdS/CFT correspondence, with a soft wall to break the conformal symmetry.

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“…To mimic a continuum, one can adjust the AdS curvature radius, R, such that R 1/M 5 and ∆m KK ≤ Γ H , the Higgs width. This is similar to a Padé approximation of the continuum [63].…”

Section: Jhep02(2020)026supporting

confidence: 57%

Quantum Critical Higgs: from AdS5 to colliders

Shirazi

Terning

2020

J. High Energ. Phys.

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“…There are other possibilities [11,24] for the structure of the above quadratic Lagrangian that correspond to differently shaped spectral density functions. The different shapes correspond to different ways in which the behavior of the theory makes the transition from the IR, where conformal symmetry is broken, to the UV, where it is restored.…”

Section: Generalized Free Field Theorymentioning

confidence: 99%

Quantum Critical Higgs

et al. 2016

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The appearance of the light Higgs boson at the LHC is difficult to explain, particularly in light of naturalness arguments in quantum field theory. However, light scalars can appear in condensed matter systems when parameters (like the amount of doping) are tuned to a critical point. At zero temperature these quantum critical points are directly analogous to the finely tuned standard model. In this paper, we explore a class of models with a Higgs near a quantum critical point that exhibits non-mean-field behavior. We discuss the parametrization of the effects of a Higgs emerging from such a critical point in terms of form factors, and present two simple realistic scenarios based on either generalized free fields or a 5D dual in anti-de Sitter space. For both of these models, we consider the processes gg → ZZ and gg → hh, which can be used to gain information about the Higgs scaling dimension and IR transition scale from the experimental data.

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“…These include a composite Banks-Zaks particle with a continuum of masses [50][51][52], or alternatively a Sommerfeld-like model of massless fermions coupled to a massive vector field [53]. Recently, it was also shown that unparticlelike propagators may be mimicked by a small collection of ordinary particles via Padé approximations [54].…”

Section: Basics Of Unparticle Physicsmentioning

confidence: 99%

Vector unparticle enhanced black holes: Exact solutions and thermodynamics

Mureika¹,

Spallucci²

2010

Physics Letters B

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Tensor and scalar unparticle couplings to matter have been shown to enhance gravitational interactions and provide corrections to the Schwarzschild metric and associated black hole structure. We derive an exact solution to the Einstein equations for vector unparticles, and conclusively demonstrate that these induce Riessner-Nordström (RN)-like solutions where the role of the "charge" is defined by a composite of unparticle phase space parameters. These black holes admit double-horizon structure, although unlike the RN metric these solutions have a minimum inner horizon value. In the extremal limit, the Hawking temperature is shown to vanish. As with the scalar/tensor case, the (outer) horizon is shown via entropy considerations to behave like a fractal surface of spectral dimension d H = 2d U .

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Unparticle signals with a few particles

Cited by 12 publications

References 33 publications

Quantum Critical Higgs: from AdS5 to colliders

Quantum Critical Higgs: from AdS5 to colliders

Quantum Critical Higgs

Vector unparticle enhanced black holes: Exact solutions and thermodynamics

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