LHC constraints on the Lee–Wick Higgs sector

Carone, Christopher D.; Ramos, Raymundo; Sher, Marc

doi:10.1016/j.physletb.2014.03.025

Cited by 10 publications

(8 citation statements)

References 51 publications

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“…Eqs. (32) and (33), together with the fact pointed out in Sec. 2 that the (anti)holomorphic potentials are not modified by the star product, mean that the net effect of the superspace deformation is the introduction of Lee-Wick type terms in the action.…”

Section: Wess-zumino Model In the Deformed Superspacementioning

confidence: 54%

“…We argue that this possibility has very interesting properties, mainly that at the second order in the deformation parameter, the scalar superfield theory defined in this non-anticommutative superspace exactly coincides with the higher derivative supersymmetric Wess-Zumino model studied, for example, in [26]. This is interesting because Lee-Wick type of theories [27,28] have recently been revived in higher derivative extensions of the Standard Model, which attempts to be phenomenologically viable and free of hierarchy problems [29,30,31,32]. Supersymmetric models with higher derivative operators have also attracted some attention at the formal level in recent years [33,34,35].…”

Section: Introductionmentioning

confidence: 79%

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A relation between deformed superspace and Lee–Wick higher-derivative theories

Dias

Ferrari

Palechor

et al. 2015

J. Phys. A: Math. Theor.

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We propose a type of non-anticommutative superspace, with the interesting property of relating to Lee-Wick type of higher derivatives theories, which are known for their interesting properties, and have lead to proposals of phenomenologicaly viable higher derivatives extensions of the Standard Model. The deformation of superspace we consider does not preserve supersymmetry or associativity in general; however, we show that a non-anticommutative version of the Wess-Zumino model can be properly defined. In fact, the definition of chiral and antichiral superfields turns out to be simpler in our case than in the well known N = 1/2 supersymmetric case. We show that, when the theory is truncated at the first nontrivial order in the deformation parameter, supersymmetry is restored, and we end up with a well known Lee-Wick type of higher derivative extension of the Wess-Zumino model. Thus we show how non-anticommutative could provide an alternative mechanism for generation of these kind of higher derivative theories.

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Section: Wess-zumino Model In the Deformed Superspacementioning

confidence: 54%

Section: Introductionmentioning

confidence: 79%

A relation between deformed superspace and Lee–Wick higher-derivative theories

Dias

Ferrari

Palechor

et al. 2015

J. Phys. A: Math. Theor.

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“…The ratio of the couplings of the neutral Higgs bosons to their value in the Standard Model, g XY , are [19]…”

Section: The Lee-wick Standard Model Higgs Sectormentioning

confidence: 99%

“…In Ref. [16] and [19], bounds on the model from B-meson and Z decays and LHC studies of the light Higgs boson are examined. The strongest of these constraints comes from radiative B-decays and gives a lower bound on the heavy neutral (charged) scalar of 445 (463) GeV.…”

Section: The Lee-wick Standard Model Higgs Sectormentioning

confidence: 99%

“…Grinstein, et al [6] also demonstrated that the scattering of longitudinally polarized massive vector bosons satisfied perturbative unitarity. Explicitly, they later showed that unitarity and Lorentz-invariance are preserved in the S-matrix to all orders and that causality arises as an emergent macroscopic phenomenon [7].Since the Grinstein et al papers, there have been numerous phenomenological studies of the LWSM, including, but not limited to the study the possibility of observing the microcausality violation at colliders [8][9][10][11][12][13], the effects of the LWSM on precision electroweak measurements [14][15][16][17][18][19], and finite temperature effects [20][21][22]. The LW partners of the light quarks and gluons must be relatively heavy, O(10) TeV, in order to avoid detection.…”

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confidence: 99%

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Lee-Wick extension of the two-Higgs doublet model

2016

Self Cite

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The Lee-Wick Standard Model is a highly constrained model which solves the gauge hierarchy problem at the expense of including states with negative norm. It appears to be macroscopically causal and consistent. This model is extended by considering the two-Higgs doublet extension of the Lee-Wick model. Rewriting the Lagrangian using auxiliary fields introduces two additional doublets of Lee-Wick partners. The model is highly constrained, with only one or two additional parameters beyond that of the usual two-Higgs doublet model, and yet there are four doublets. Mass relations are established by diagonalizing the mass matrices and further constraints are established by studying results from B → τ ν, neutral B-meson mixing, and B → Xsγ. The prospects of detecting evidence for this model at the LHC are discussed.

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Asymptotically nonlocal gravity

Boos

Carone

2023

J. High Energ. Phys.

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Asymptotically nonlocal field theories interpolate between Lee-Wick theories with multiple propagator poles, and ghost-free nonlocal theories. Previous work on asymp- totically nonlocal scalar, Abelian, and non-Abelian gauge theories has demonstrated the existence of an emergent regulator scale that is hierarchically smaller than the lightest Lee-Wick partner, in a limit where the Lee-Wick spectrum becomes dense and decoupled. We generalize this construction to linearized gravity, and demonstrate the emergent regula- tor scale in three examples: by studying the resolution of the singularity (i) at the origin in the classical solution for the metric of a point particle, and (ii) in the nonrelativistic gravitational potential computed via a one-graviton exchange amplitude; (iii) we also show how this derived scale regulates the one-loop graviton contribution to the self energy of a real scalar field. We comment briefly on the generalization of our approach to the full, nonlinear theory of gravity.

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LHC constraints on the Lee–Wick Higgs sector

Cited by 10 publications

References 51 publications

A relation between deformed superspace and Lee–Wick higher-derivative theories

A relation between deformed superspace and Lee–Wick higher-derivative theories

Lee-Wick extension of the two-Higgs doublet model

Asymptotically nonlocal gravity

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